Section 207 of the Social Security Act, referred to in subsec. (a)(3)(A), is classified to section 407 of Title 42, The Public Health and Welfare.

The Trade Act of 1974, referred to in subsec. (f)(2)(B), is Pub. L. 93–618, Jan. 3, 1975, 88 Stat. 1978. Title V of the Trade Act of 1974 is classified generally to subchapter V (§ 2461 et seq.) of chapter 12 of Title 19, Customs Duties. For complete classification of this Act to the Code, see section 2101 of Title 19 and Tables.

The date of the enactment of this subsection, referred to in subsec. (l)(1)(A)(i), (iii), (B)(iv)(I)(aa), is the date of enactment of Pub. L. 111–226, which was approved Aug. 10, 2010.

The date of the enactment of this subsection, referred to in subsec. (m)(3)(B), is the date of enactment of Pub. L. 111–147, which was approved Mar. 18, 2010.

2018—Subsec. (a)(3). Pub. L. 115–141 struck out concluding provisions which read as follows: “For treatment of certain citizens of possessions of the United States, see section 932(c).”

2015—Subsec. (k)(1)(C)(v). Pub. L. 114–113 struck out cl. (v). Text read as follows: “The term ‘interest related dividend’ shall not include any dividend with respect to any taxable year of the company beginning after December 31, 2014.”

Subsec. (k)(2)(C)(v). Pub. L. 114–113 struck out cl. (v). Text read as follows: “The term ‘short-term capital gain dividend’ shall not include any dividend with respect to any taxable year of the company beginning after December 31, 2014.”

2014—Subsec. (a)(1)(B). Pub. L. 113–295, § 221(a)(71), amended subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: “gains described in section 631(b) or (c), and gains on transfers described in section 1235 made on or before October 4, 1966,”.

Subsec. (k)(1)(C)(v), (2)(C)(v). Pub. L. 113–295, § 132(a), substituted “December 31, 2014” for “December 31, 2013”.

2013—Subsec. (k)(1)(C)(v), (2)(C)(v). Pub. L. 112–240 substituted “December 31, 2013” for “December 31, 2011”.

2010—Subsec. (h)(2). Pub. L. 111–147, § 502(b)(1), amended par. (2) generally. Prior to amendment, par. (2) defined portfolio interest to also include interest on certain obligations not in registered form.

Subsec. (h)(3)(A). Pub. L. 111–147, § 502(b)(2)(A), struck out “subparagraph (A) or (B) of” before “paragraph (2)”.

Subsec. (i)(2)(B). Pub. L. 111–226, § 217(b)(1), amended subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: “A percentage of any dividend paid by a domestic corporation meeting the 80-percent foreign business requirements of section 861(c)(1) equal to the percentage determined for purposes of section 861(c)(2)(A).”

Subsec. (k)(1)(A). Pub. L. 111–325, § 302(b)(2), inserted “which meets the requirements of section 852(a) for the taxable year with respect to which the dividend is paid” before period at end.

Subsec. (k)(1)(C). Pub. L. 111–325, § 301(f)(1), substituted introductory provisions, cls. (i) to (iv), and cl. (v) heading and “The term ‘interest related dividend’ shall not include any dividend with respect to” for “For purposes of this paragraph, the term ‘interest-related dividend’ means any dividend (or part thereof) which is designated by the regulated investment company as an interest-related dividend in a written notice mailed to its shareholders not later than 60 days after the close of its taxable year. If the aggregate amount so designated with respect to a taxable year of the company (including amounts so designated with respect to dividends paid after the close of the taxable year described in section 855) is greater than the qualified net interest income of the company for such taxable year, the portion of each distribution which shall be an interest-related dividend shall be only that portion of the amounts so designated which such qualified net interest income bears to the aggregate amount so designated. Such term shall not include any dividend with respect to”.

Pub. L. 111–312, § 748(a), substituted “December 31, 2011” for “December 31, 2009”.

Subsec. (k)(2)(A). Pub. L. 111–325, § 302(b)(2), inserted “which meets the requirements of section 852(a) for the taxable year with respect to which the dividend is paid” before period at end.

Subsec. (k)(2)(C). Pub. L. 111–325, § 301(f)(2), substituted introductory provisions, cls. (i) to (iv), and cl. (v) heading and “The term ‘short-term capital gain dividend’ shall not include any dividend with respect to” for “For purposes of this paragraph, the term ‘short-term capital gain dividend’ means any dividend (or part thereof) which is designated by the regulated investment company as a short-term capital gain dividend in a written notice mailed to its shareholders not later than 60 days after the close of its taxable year. If the aggregate amount so designated with respect to a taxable year of the company (including amounts so designated with respect to dividends paid after the close of the taxable year described in section 855) is greater than the qualified short-term gain of the company for such taxable year, the portion of each distribution which shall be a short-term capital gain dividend shall be only that portion of the amounts so designated which such qualified short-term gain bears to the aggregate amount so designated. Such term shall not include any dividend with respect to”.

Pub. L. 111–312, § 748(a), substituted “December 31, 2011” for “December 31, 2009”.

Subsec. (k)(2)(D). Pub. L. 111–325, § 308(b)(3), substituted “For purposes of this subparagraph, the net short-term capital gain of the regulated investment company shall be computed by treating any short-term capital gain dividend includible in gross income with respect to stock of another regulated investment company as a short-term capital gain.” for “For purposes of this subparagraph—

“(i) the net short-term capital gain of the regulated investment company shall be computed by treating any short-term capital gain dividend includible in gross income with respect to stock of another regulated investment company as a short-term capital gain, and

“(ii) the excess of the net short-term capital gain for a taxable year over the net long-term capital loss for a taxable year (to which an election under section 4982(e)(4) does not apply) shall be determined without regard to any net capital loss or net short-term capital loss attributable to transactions after October 31 of such year, and any such net capital loss or net short-term capital loss shall be treated as arising on the 1st day of the next taxable year.

To the extent provided in regulations, clause (ii) shall apply also for purposes of computing the taxable income of the regulated investment company.”

Subsec. (l). Pub. L. 111–226, § 217(b)(2), added subsec. (l). Former subsec. (l) redesignated (m).

Pub. L. 111–147, § 541(a), added subsec. (l). Former subsec. (l) redesignated (m).

Subsec. (m). Pub. L. 111–226, § 217(b)(2), redesignated subsec. (l) as (m). Former subsec. (m) redesignated (n).

Pub. L. 111–147, § 541(a), redesignated subsec. (l) as (m).

Subsec. (n). Pub. L. 111–226, § 217(b)(2), redesignated subsec. (m) as (n).

2008—Subsec. (k)(1)(C), (2)(C). Pub. L. 110–343 substituted “December 31, 2009” for “December 31, 2007”.

2006—Subsec. (k)(2)(E). Pub. L. 109–222 added subpar. (E).

2004—Subsec. (i)(2)(D). Pub. L. 108–357, § 409(a), added subpar. (D).

Subsecs. (k), (l). Pub. L. 108–357, § 411(a)(1), added subsec. (k) and redesignated former subsec. (k) as (l).

2000—Subsec. (f)(2)(B). Pub. L. 106–554 inserted opening parenthesis before “19 U.S.C.”.

1999—Subsec. (h)(4)(C)(iv). Pub. L. 106–170 substituted “to manage” for “to reduce”.

1998—Subsec. (f)(2)(B). Pub. L. 105–206 substituted “19 U.S.C. 2461 et seq.)” for “(19 U.S.C. 2462)”.

1996—Subsec. (b)(1). Pub. L. 104–188, § 1401(b)(10), substituted “section 1 or 55” for “section 1, 55, or 402(d)(1)”.

Subsec. (f)(2)(B). Pub. L. 104–188, § 1954(b)(1), substituted “under title V” for “within the meaning of section 502”.

1994—Subsec. (a)(3)(A). Pub. L. 103–465 substituted “85 percent” for “one-half”.

Subsec. (c). Pub. L. 103–296 substituted “(J), (M), or (Q)” for “(J), or (M)” in two places.

1993—Subsec. (a)(2). Pub. L. 103–66, § 13113(d)(5), inserted “such gains and losses shall be determined without regard to section 1202 and” after “except that” in second sentence.

Subsec. (h)(2)(B)(ii). Pub. L. 103–66, § 13237(c)(1), substituted “paragraph (5)” for “paragraph (4)”.

Subsec. (h)(4) to (7). Pub. L. 103–66, § 13237(a)(1), added par. (4) and redesignated former pars. (4) to (6) as (5) to (7), respectively.

1992—Subsec. (a)(1)(B). Pub. L. 102–318, § 521(b)(28), struck out “402(a)(2), 403(a)(2), or” before “631(b)”.

Subsec. (b)(1). Pub. L. 102–318, § 521(b)(29), substituted “402(d)(1)” for “402(e)(1)”.

Subsec. (k)(1). Pub. L. 102–318, § 521(b)(30), substituted “402(e)(2)” for “402(a)(4)”.

1988—Subsec. (c). Pub. L. 100–647, § 1001(d)(2)(B), substituted “the second sentence of section 1441(b)” for “section 1441(b)(1) or (2)”, and “(F), (J), or (M)” for “(F) or (J)” in two places.

Subsecs. (j), (k). Pub. L. 100–647, § 6134(a)(1), added subsec. (j) and redesignated former subsec. (j) as (k).

1986—Subsec. (a)(1). Pub. L. 99–514, § 1810(d)(3)(A), substituted “subsection (h)” for “subsection (i)” in introductory provisions.

Subsec. (a)(1)(C). Pub. L. 99–514, § 1810(e)(2)(A), amended subpar. (C) generally. Prior to amendment, subpar. (C) read as follows: “in the case of—

“(i) a sale or exchange of an original issue discount obligation, the amount of any gain not in excess of the original issue discount accruing while such obligation was held by the nonresident alien individual (to the extent such discount was not theretofore taken into account under clause (ii)), and

“(ii) the payment of interest on an original issue discount obligation, an amount equal to the original issue discount accrued on such obligation since the last payment of interest thereon (except that such original issue discount shall be taken into account under this clause only to the extent that the tax thereon does not exceed the interest payment less the tax imposed by subparagraph (A) thereon), and”.

Subsec. (a)(1)(D). Pub. L. 99–514, § 1211(b)(4), struck out “or from payments which are treated as being so contingent under subsection (e),” after “sold or exchanged,”.

Subsec. (a)(2). Pub. L. 99–514, § 301(b)(9), struck out “such gains and losses shall be determined without regard to section 1202 (relating to deduction for capital gains) and” after “United States, except that”.

Subsec. (a)(3). Pub. L. 99–272 inserted at end “For treatment of certain citizens of possessions of the United States, see section 932(c).”

Subsec. (e). Pub. L. 99–514, § 1211(b)(5), struck out subsec. (e) which related to gains from sale or exchange of certain intangible property, par. (1) treating payments as contingent on use, etc., and par. (2) containing source rule.

Subsec. (h)(2). Pub. L. 99–514, § 1810(d)(1)(A), (3)(B), inserted “which would be subject to tax under subsection (a) but for this subsection and” in introductory provisions and substituted “receives a statement” for “has received a statement” in subpar. (B)(ii).

Subsec. (h)(3)(C)(ii), (iii). Pub. L. 99–514, § 1810(d)(2), added cl. (ii) and redesignated former cl. (ii) as (iii).

Subsecs. (i), (j). Pub. L. 99–514, § 1214(c)(1), added subsec. (i) and redesignated former subsec. (i) as (j).

1984—Subsec. (a)(1). Pub. L. 98–369, § 127(a)(2), substituted “Except as provided in subsection (i), there” for “There”.

Subsec. (a)(1)(A). Pub. L. 98–369, § 42(a)(9), substituted “section 1273” for “section 1232(b)”.

Subsec. (a)(1)(C). Pub. L. 98–369, § 128(a)(1), amended subpar. (C) generally, substituting in cl. (i), “a sale or exchange of an original issue discount obligation, the amount of any gain not in excess of the original issue discount accruing while such obligation was held by the nonresident alien individual (to the extent such discount was not theretofore taken into account under clause (ii)), and” for “bonds or other evidences of indebtedness issued after September 28, 1965, and before April 1, 1972, amounts which under section 1232(a)(2)(B) are considered as ordinary income, and, in the case of corporate obligations issued after May 27, 1969, and before April 1, 1972, amounts which would be so considered but for the fact the obligations were issued after May 27, 1969,”, substituting in cl. (ii), “the payment of interest on an original issue discount obligation, an amount equal to the original issue discount accrued on such obligation since the last payment of interest thereon (except that such original issue discount shall be taken into account under this clause only to the extent that the tax thereon does not exceed the interest payment less the tax imposed by subparagraph (A) thereon), and” for “bonds or other evidences of indebtedness issued after March 31, 1972, and payable more than 6 months from the date of original issue (without regard to the period held by the taxpayer), amounts which under section 1232(a)(2)(B) would be considered as ordinary income but for the fact such obligations were issued after May 27, 1969, and”, and striking out cl. (iii) which required that in the case of the payment of interest on an obligation described in cl. (ii), an amount equal to the original issue discount, but not in excess of such interest less the tax imposed by subpar. (A) thereon, accrued on such obligation since the last payment of interest thereon, be included for purpose of the 30 percent tax.

Subsec. (g). Pub. L. 98–369, § 128(a)(2), added subsec. (g). Former subsec. (g), relating to cross references, redesignated (h).

Subsec. (g)(6) to (8). Pub. L. 98–369, § 412(b)(1), amended subsec. (g), relating to cross references, by striking out par. (6) referring to section 6015(j) for the requirement of making a declaration of estimated tax by certain nonresident alien individuals and redesignating pars. (7) and (8) as (6) and (7), respectively.

Subsec. (h). Pub. L. 98–369, § 127(a), added subsec. (h). Former subsec. (h), relating to cross references, redesignated (i).

Pub. L. 98–369, § 128(a)(2), redesignated subsec. (g), relating to cross references, as (h).

Subsec. (i). Pub. L. 98–369, § 127(a)(1), redesignated subsec. (h), relating to cross references, as (i).

1983—Subsec. (a)(3). Pub. L. 98–21, § 121(c)(1), added par. (3).

Subsec. (a)(3)(A). Pub. L. 98–21, § 335(b)(2)(B), inserted “(notwithstanding section 207 of the Social Security Act)” after “income”.

1981—Subsec. (g)(6). Pub. L. 97–34 substituted “6015(j)” for “6015(i)”.

1980—Subsec. (b)(1). Pub. L. 96–222 substituted “55” for “section 55”.

Subsec. (f). Pub. L. 96–605 designated existing provision as par. (1), inserted heading “In general” and redesignated par. (1) as subpar. (A), cls. (A) and (B) of subpar. (A) as so redesignated as cls. (i) and (ii), and par. (2) as subpar. (B), and added par. (2).

Subsec. (g)(8). Pub. L. 96–499 added par. (8).

1978—Subsec. (b)(1). Pub. L. 95–600, §§ 401(b)(3), 421(e)(4), substituted “section 1, section 55, or 402(e)(1)” for “section 1, 402(e)(1), or 1201(b)”.

1976—Subsec. (a)(1)(C)(i), (ii). Pub. L. 94–455, § 1901(b)(3)(I), substituted “ordinary income” for “gain from the sale or exchange of property which is not a capital asset”.

Subsec. (d). Pub. L. 94–455, § 1906(b)(13)(A), struck out “or his delegate” after “Secretary”, each time appearing.

Subsec. (g)(7). Pub. L. 94–455, § 1012(a)(2), added par. (7).

1974—Subsec. (b)(1). Pub. L. 93–406 inserted reference to section 402(e)(1).

1971—Subsec. (a)(1)(A). Pub. L. 92–178, § 313(a), inserted “(other than original issue discount as defined in section 1232(b))” after “interest”.

Subsec. (a)(1)(C). Pub. L. 92–178, § 313(b), designated existing provisions as cl. (i), inserted “and before April 1, 1972,” after “September 28, 1965,”, substituted “section 1232(a)(2)(B)” for “section 1232”, and inserted “, in the case of corporate obligations issued after May 27, 1969, and before April 1, 1972, amounts which would be so considered but for the fact the obligations were issued after May 27, 1969,”, and added cls. (ii) and (iii).

1966—Subsecs. (a), (b). Pub. L. 89–809 consolidated the substance of former subsecs. (a) to (c) and, as part of the consolidation, revised the overall income tax treatment of nonresident alien individuals by substituting provisions dividing their income for tax purposes into two basic groups according to whether or not the income is effectively connected with a United States trade or business for provisions calling for different tax treatment based upon whether or not they are, or are not, engaged in a trade or business in the United States, with a further breakdown of those not engaged in trade or business in the United States as to whether their income is over or under $21,200.

Subsec. (c). Pub. L. 89–809 redesignated subsec. (d) as (c) and inserted provisions that any income described in section 1441(b)(1) or (2) which is received by such individual shall, to the extent derived from sources within the United States, be treated as effectively connected with the conduct of a trade or business within the United States. Substance of former subsec. (c) revised and incorporated into subsecs. (a) and (b).

Subsecs. (d) to (f). Pub. L. 89–809 added subsecs. (d) to (f) and redesignated former subsecs. (d) and (e) as (c) and (g), respectively.

Subsec. (g). Pub. L. 89–809 redesignated former subsec. (e) as (g), added pars. (2) and (4) to (6), and redesignated former pars. (1) and (2) as (3) and (1), respectively.

1964—Subsec. (a). Pub. L. 88–272, § 113(b)(2), substituted “30 percent tax” for “and gross income of not more than $15,400” in heading.

Subsec. (b). Pub. L. 88–272, §§ 113(b)(1), (3), 201(d)(12), substituted “$19,000 in the case of a taxable year beginning in 1964 or more than $21,200 in the case of a taxable year beginning after 1964” for “$15,400”, “the credit under section 35” for “the sum of the credits under sections 34 and 35” in text, and “Regular tax” for “and gross income of more than $15,400” in heading.

1961—Subsecs. (d), (e). Pub. L. 87–256 added subsec. (d) and redesignated former subsec. (d) as (e).

1960—Subsec. (d). Pub. L. 86–437 substituted “Cross references” for “Doubling of tax” in heading, and inserted cross reference to section 402(a)(4).

1958—Subsec. (a)(1). Pub. L. 85–866, § 40(a), inserted “section 403(a)(2),” after “section 402(a)(2),”.

Subsec. (b). Pub. L. 85–866, § 41(a), inserted last par. covering former provisions of par. (3), which was struck out by the amendment, and containing new provisions with references to credits under section 34 and 35 and exclusion under section 116 of this title.

Pub. L. 114–113, div. Q, title I, § 125(b), Dec. 18, 2015, 129 Stat. 3054, provided that: “The amendments made by this section [amending this section] shall apply to taxable years beginning after December 31, 2014.”

Pub. L. 113–295, div. A, title I, § 132(b), Dec. 19, 2014, 128 Stat. 4018, provided that: “The amendments made by this section [amending this section] shall apply to taxable years beginning after December 31, 2013.”

Amendment by section 221(a)(71) of 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. 112–240, title III, § 320(b), Jan. 2, 2013, 126 Stat. 2332, provided that: “The amendments made by this section [amending this section] shall apply to taxable years beginning after December 31, 2011.”

Amendment by section 301(f) of Pub. L. 111–325 applicable to taxable years beginning after Dec. 22, 2010, see section 301(h) of Pub. L. 111–325, set out as a note under section 852 of this title.

Amendment by section 302(b)(2) of Pub. L. 111–325 applicable to taxable years beginning after Dec. 22, 2010, see section 302(c) of Pub. L. 111–325, set out as a note under section 852 of this title.

Amendment by section 308(b)(3) of Pub. L. 111–325 applicable to taxable years beginning after Dec. 22, 2010, see section 308(c) of Pub. L. 111–325, set out as a note under section 852 of this title.

Pub. L. 111–312, title VII, § 748(b), Dec. 17, 2010, 124 Stat. 3320, provided that: “The amendments made by this section [amending this section] shall apply to taxable years beginning after December 31, 2009.”

Amendment by Pub. L. 111–226 applicable to taxable years beginning after Dec. 31, 2010, with certain exceptions, see section 217(d) of Pub. L. 111–226, set out as a note under section 861 of this title.

Amendment by section 502(b)(1), (2)(A) of Pub. L. 111–147 applicable to obligations issued after the date which is 2 years after Mar. 18, 2010, see section 502(f) of Pub. L. 111–147, set out as a note under section 149 of this title.

Pub. L. 111–147, title V, § 541(b), Mar. 18, 2010, 124 Stat. 117, provided that: “The amendments made by this section [amending this section] shall apply to payments made on or after the date that is 180 days after the date of the enactment of this Act [Mar. 18, 2010].”

Pub. L. 110–343, div. C, title II, § 206(c), Oct. 3, 2008, 122 Stat. 3865, provided that: “The amendments made by this section [amending this section] shall apply to dividends with respect to taxable years of regulated investment companies beginning after December 31, 2007.”

Amendment by Pub. L. 109–222 applicable to taxable years of qualified investment entities beginning after December 31, 2005, except that no amount shall be required to be withheld under section 1441, 1442, or 1445 of the Internal Revenue Code of 1986 with respect to any distribution before May 17, 2006 if such amount was not otherwise required to be withheld under any such section as in effect before such amendments, see section 505(d) of Pub. L. 109–222, set out as a note under section 852 of this title.

Pub. L. 108–357, title IV, § 409(b), Oct. 22, 2004, 118 Stat. 1500, provided that: “The amendment made by this section [amending this section] shall apply to payments made after December 31, 2004.”

Pub. L. 108–357, title IV, § 411(d), Oct. 22, 2004, 118 Stat. 1505, provided that:

Amendment by Pub. L. 106–170 applicable to any instrument held, acquired, or entered into, any transaction entered into, and supplies held or acquired on or after Dec. 17, 1999, see section 532(d) of Pub. L. 106–170, set out as a note under section 170 of this title.

Amendment by section 1401(b)(10) of Pub. L. 104–188 applicable to taxable years beginning after Dec. 31, 1999, with retention of certain transition rules, see section 1401(c) of Pub. L. 104–188, set out as a note under section 402 of this title.

Amendment by section 1954(b)(1) of Pub. L. 104–188 applicable to articles entered on or after Oct. 1, 1996, with provisions relating to retroactive application, see section 1953 of Pub. L. 104–188, set out as an Effective Date note under section 2461 of Title 19, Customs Duties.

Pub. L. 103–465, title VII, § 733(b), Dec. 8, 1994, 108 Stat. 5006, provided that: “The amendment made by subsection (a) [amending this section] shall apply to benefits paid after December 31, 1994, in taxable years ending after such date.”

Pub. L. 103–296, title III, § 320(c), Aug. 15, 1994, 108 Stat. 1535, provided that: “The amendments made by this subsection [probably means this section, which amended this section, sections 872, 1441, 3121, 3231, 3306, and 7701 of this title, and section 410 of Title 42, The Public Health and Welfare] shall take effect with the calendar quarter following the date of the enactment of this Act [Aug. 15, 1994].”

Amendment by section 13113(d)(5) of Pub. L. 103–66 applicable to stock issued after Aug. 10, 1993, see section 13113(e) of Pub. L. 103–66, set out as a note under section 53 of this title.

Pub. L. 103–66, title XIII, § 13237(d), Aug. 10, 1993, 107 Stat. 508, provided that: “The amendments made by this section [amending this section and sections 881, 1441, 1442, and 2105 of this title] shall apply to interest received after December 31, 1993; except that the amendments made by subsection (b) [amending section 2105 of this title] shall apply to the estates of decedents dying after December 31, 1993.”

Amendment by Pub. L. 102–318 applicable to distributions after Dec. 31, 1992, see section 521(e) of Pub. L. 102–318, set out as a note under section 402 of this title.

Amendment by section 1001(d)(2)(B) of Pub. L. 100–647 effective, except as otherwise provided, as if included in the provision of the Tax Reform Act of 1986, Pub. L. 99–514, to which such amendment relates, see section 1019(a) of Pub. L. 100–647, set out as a note under section 1 of this title.

Pub. L. 100–647, title VI, § 6134(b), Nov. 10, 1988, 102 Stat. 3721, provided that: “The amendments made by subsection (a) [amending this section and section 1441 of this title] shall take effect on the date of the enactment of this Act [Nov. 10, 1988].”

Amendment by section 301(b)(9) of Pub. L. 99–514 applicable to taxable years beginning after Dec. 31, 1986, see section 301(c) of Pub. L. 99–514, set out as a note under section 62 of this title.

Amendment by section 1211(b)(4), (5) of Pub. L. 99–514 applicable to taxable years beginning after Dec. 31, 1986, except as otherwise provided, see section 1211(c) of Pub. L. 99–514, set out as an Effective Date note under section 865 of this title.

Amendment by section 1214(c)(1) of Pub. L. 99–514 applicable to payments made in taxable year of payor beginning after Dec. 31, 1986, except as otherwise provided, see section 1214(d) of Pub. L. 99–514, as amended, set out as a note under section 861 of this title.

Amendment by section 1810(d)(1)(A), (2), (3)(A), (B), (e)(2)(A) of Pub. L. 99–514 effective, except as otherwise provided, as if included in the provisions of the Tax Reform Act of 1984, Pub. L. 98–369, div. A, to which such amendment relates, see section 1881 of Pub. L. 99–514, set out as a note under section 48 of this title.

Pub. L. 99–272, title XII, § 12103(c), Apr. 7, 1986, 100 Stat. 285, provided that: “The amendments made by this section [amending this section and section 932 of this title] shall apply to benefits received after December 31, 1983, in taxable years ending after such date.”

Amendment by section 42(a)(9) of Pub. L. 98–369 applicable to taxable years ending after July 18, 1984, see section 44 of Pub. L. 98–369, set out as an Effective Date note under section 1271 of this title.

Pub. L. 98–369, div. A, title I, § 127(g), July 18, 1984, 98 Stat. 652, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095; Pub. L. 100–647, title VI, § 6128(a), Nov. 10, 1988, 102 Stat. 3716, provided that:

[Pub. L. 100–647, title VI, § 6128(b), Nov. 10, 1988, 102 Stat. 3716, provided that: “The amendment made by subsection (a) [amending section 127(g) of Pub. L. 98–369, set out above] shall apply to taxable years ending after the date of the enactment of this Act [Nov. 10, 1988].”]

Pub. L. 98–369, div. A, title I, § 128(d), July 18, 1984, 98 Stat. 655, provided that:

Amendment by section 412(b)(1) of Pub. L. 98–369 applicable with respect to taxable years beginning after Dec. 31, 1984, see section 414(a)(1) of Pub. L. 98–369, set out as a note under section 6654 of this title.

Amendment by section 121(c)(1) of Pub. L. 98–21 applicable to benefits received after Dec. 31, 1983, in taxable years ending after such date, except for any portion of a lump-sum payment of social security benefits received after Dec. 31, 1983, if the generally applicable payment date for such portion was before Jan. 1, 1984, see section 121(g) of Pub. L. 98–21, set out as an Effective Date note under section 86 of this title.

Pub. L. 97–34, title VII, § 725(d), Aug. 13, 1981, 95 Stat. 346, provided that: “The amendments made by this section [amending this section and sections 6015, 6153, 6654, and 7701 of this title] shall apply to estimated tax for taxable years beginning after December 31, 1980.”

Pub. L. 96–605, title II, § 227(b), Dec. 28, 1980, 94 Stat. 3530, provided that: “The amendment made by subsection (a) [amending this section] shall apply to amounts received after July 1, 1979.”

Amendment by Pub. L. 96–499 applicable to dispositions after June 18, 1980, see section 1125(a) of Pub. L. 96–499, set out as an Effective Date note under section 897 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 section 401(b)(3) of Pub. L. 95–600 applicable to taxable years beginning after Dec. 31, 1978, see section 401(c) of Pub. L. 95–600, set out as a note under section 3 of this title.

Amendment by section 421(e)(4) of Pub. L. 95–600 applicable to taxable years beginning after Dec. 31, 1978, see section 421(g) of Pub. L. 95–600, set out as a note under section 5 of this title.

Amendment by section 1012(a)(2) of Pub. L. 94–455 applicable to taxable years ending on or after Dec. 31, 1975, see section 1012(d) of Pub. L. 94–455, set out as a note under section 6013 of this title.

Amendment by section 1901(b)(3)(I) of Pub. L. 94–455 effective for 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.

Amendment by Pub. L. 93–406 applicable only with respect to distributions or payments made after Dec. 31, 1973, in taxable years beginning after Dec. 31, 1973, see section 2005(d) of Pub. L. 93–406, set out as a note under section 402 of this title.

Pub. L. 92–178, title III, § 313(f), Dec. 10, 1971, 85 Stat. 528, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that: “The amendments to section 871 and 881 of the Internal Revenue Code of 1986 [formerly I.R.C. 1954] made by this section shall apply with respect to taxable years beginning after December 31, 1966. The amendments to sections 1441 and 1442 of such Code made by this section shall apply with respect to payments occurring on or after April 1, 1972.”

Pub. L. 89–809, title I, § 103(n), Nov. 13, 1966, 80 Stat. 1555, provided that:

Amendment by section 113(b)(1) of Pub. L. 88–272 effective, except for purposes of section 21 of this title, with respect to taxable years beginning after Dec. 31, 1963, see section 131 of Pub. L. 88–272, set out as a note under section 1 of this title.

Amendment by section 201(d)(12) of Pub. L. 88–272 applicable with respect to dividends received after Dec. 31, 1964, in taxable years ending after such date, see section 201(e) of Pub. L. 88–272, set out as a note under section 22 of this title.

Amendment by Pub. L. 87–256 applicable to taxable years beginning after Dec. 31, 1961, see section 110(h)(1) of Pub. L. 87–256, set out as a note under section 117 of this title.

Amendment by Pub. L. 86–437 applicable only with respect to taxable years beginning after Dec. 31, 1959, see section 3 of Pub. L. 86–437, set out as a note under section 402 of this title.

Pub. L. 85–866, title I, § 40(c), Sept. 2, 1958, 72 Stat. 1639, provided that: “The amendment made by subsection (a) [amending this section] shall apply only with respect to taxable years ending after the date of the enactment of this Act [Sept. 2, 1958]. The amendments made by subsection (b) [amending section 1441 of this title] shall take effect on the day following the date of the enactment of this Act [Sept. 2, 1958].”

Pub. L. 85–866, title I, § 41(c), Sept. 2, 1958, 72 Stat. 1639, provided that: “The amendments made by this section [amending this section and section 35 of this title] shall apply only with respect to taxable years beginning after December 31, 1957.”

For provisions that nothing in amendment by Pub. L. 115–141 be construed to affect treatment of certain transactions occurring, property acquired, or items of income, loss, deduction, or credit taken into account prior to Mar. 23, 2018, for purposes of determining liability for tax for periods ending after Mar. 23, 2018, see section 401(e) of Pub. L. 115–141, set out as a note under section 23 of this title.

For nonapplication of amendments by sections 1211(b)(4), (5) and 1214(c)(1) of Pub. L. 99–514 to the extent application of such amendments would be contrary to any treaty obligation of the United States in effect on Oct. 22, 1986, with provision that for such purposes any amendment by title I of Pub. L. 100–647 be treated as if it had been included in the provision of Pub. L. 99–514 to which such amendment relates, see section 1012(aa)(3), (4) of Pub. L. 100–647, set out as a note under section 861 of this title.

For provisions directing that if any amendments made by subtitle D [§§ 1401–1465] of title I of Pub. L. 104–188 require an amendment to any plan or annuity contract, such amendment shall not be required to be made before the first day of the first plan year beginning on or after Jan. 1, 1998, see section 1465 of Pub. L. 104–188, set out as a note under section 401 of this title.

For provisions directing that if any amendments made by subtitle B [§§ 521–523] of title V of Pub. L. 102–318 require an amendment to any plan, such plan amendment shall not be required to be made before the first plan year beginning on or after Jan. 1, 1994, see section 523 of Pub. L. 102–318, set out as a note under section 401 of this title.

For provisions directing that if any amendments made by subtitle A or subtitle C of title XI [§§ 1101–1147 and 1171–1177] or title XVIII [§§ 1800–1899A] of Pub. L. 99–514 require an amendment to any plan, such plan amendment shall not be required to be made before the first plan year beginning on or after Jan. 1, 1989, see section 1140 of Pub. L. 99–514, as amended, set out as a note under section 401 of this title.