Section 1020, referred to in subsec. (a)(2), was repealed by Pub. L. 94–455, title XIX, § 1901(a)(125), Oct. 4, 1976, 90 Stat. 1784.

The Tax Reform Act of 1976, referred to in subsec. (a)(2), is Pub. L. 94–455, Oct. 4, 1976, 90 Stat. 1520, which was enacted Oct. 4, 1976. For complete classification of this Act to the Code, see Tables.

The Tax Reform Act of 1986, referred to in subsec. (a)(3)(D), is Pub. L. 99–514, Oct. 22, 1986, 100 Stat. 2085. Part II of subchapter L of this chapter was repealed and part III of subchapter L of this chapter was redesignated as part II by Pub. L. 99–514, title X, § 1024(a)(1), (2), Oct. 22, 1986, 100 Stat. 2405.

The Revenue Act of 1918 (40 Stat. 1057), referred to in subsec. (a)(4), is act Feb. 24, 1919, ch. 18, 40 Stat. 1057. For complete classification of this Act to the Code, see Tables.

The Revenue Act of 1921 (42 Stat. 227), referred to in subsec. (a)(4), is act Nov. 23, 1921, ch. 136, 42 Stat. 227. For complete classification of this Act to the Code, see Tables.

Section 218 of the Revenue Act of 1918 or 1921, referred to in subsec. (a)(4), was not classified to the Code.

The date of the enactment of the Taxpayer Relief Act of 1997, referred to in subsec. (a)(7), is the date of enactment of Pub. L. 105–34, which was approved Aug. 5, 1997.

Section 174, referred to in subsec. (a)(14), was amended generally by Pub. L. 115–97, title I, § 13206(a), Dec. 22, 2017, 131 Stat. 2111. For provisions similar to those in former subsec. (b)(1) of section 174 relating to amortization of certain research and experimental expenditures, see subsecs. (a) and (b) of section 174.

Section 10909(b)(2)(L) of Pub. L. 111–148, which directed the amendment of section 1016(a)(26) without specifying the act to be amended, was executed to this section, which is section 1016 of the Internal Revenue Code of 1986, to reflect the probable intent of Congress. See 2010 Amendment note below.

2022—Subsec. (a)(33). Pub. L. 117–169 substituted “section 25C(g)” for “section 25C(f)”.

2018—Subsec. (a)(3)(D). Pub. L. 115–141, § 401(a)(166), inserted “as in effect prior to its repeal by the Tax Reform Act of 1986” before “(or the corresponding provisions of prior income tax laws)”.

Subsec. (a)(27). Pub. L. 115–141, § 401(d)(4)(B)(iv), struck out par. (27) which read as follows: “in the case of a residence with respect to which a credit was allowed under section 1400C, to the extent provided in section 1400C(h),”.

2017—Subsec. (a)(1). Pub. L. 115–97, § 13521(a), substituted subpars. (A) and (B) for former subpars. (A) and (B) and concluding provisions which read as follows:

“(A) for taxes or other carrying charges described in section 266, or

“(B) for expenditures described in section 173 (relating to circulation expenditures),

for which deductions have been taken by the taxpayer in determining taxable income for the taxable year or prior taxable years;”.

Subsec. (a)(23). Pub. L. 115–97, § 13313(b), struck out “1044,” after “section 1043,” and “1044(d),” after “section 1043(c),”.

Subsec. (a)(38). Pub. L. 115–97, § 13823(b), added par. (38).

2014—Subsec. (a)(12). Pub. L. 113–295, § 221(a)(75), struck out par. (12) which read as follows: “to the extent provided in section 28(h) of the Internal Revenue Code of 1939 in the case of amounts specified in a shareholder’s consent made under section 28 of such code;”.

Subsec. (a)(24). Pub. L. 113–295, § 221(a)(34)(G), struck out par. (24) which read as follows: “to the extent provided in section 179A(e)(6)(A),”.

Subsec. (a)(25). Pub. L. 113–295, § 221(a)(2)(D), struck out par. (25) which read as follows: “to the extent provided in section 30(e)(1),”.

Subsec. (a)(37). Pub. L. 113–295, § 209(j)(2), substituted “section 30D(f)(1)” for “section 30D(e)(4)”.

2010—Subsec. (a)(26). Pub. L. 111–148, § 10909(b)(2)(L), (c), as amended by Pub. L. 111–312, temporarily substituted “36C(g)” for “23(g)”. See Codification note above and Effective and Termination Dates of 2010 Amendment note below.

2009—Subsec. (a)(25). Pub. L. 111–5, § 1142(b)(6), substituted “section 30(e)(1)” for “section 30(d)(1)”.

Pub. L. 111–5, § 1141(b)(3), which directed amendment of subsec. (a)(25) by substituting “section 30D(f)(1)” for “section 30D(e)(4)”, could not be executed because “section 30D(e)(4)” did not appear in text.

2008—Subsec. (a)(37). Pub. L. 110–343 added par. (37).

2007—Subsec. (a)(31), (32). Pub. L. 110–172, § 7(a)(1)(C), redesignated pars. (32) and (33) as (31) and (32), respectively, and struck out former par. (31) which read as follows: “in the case of a facility with respect to which a credit was allowed under section 45H, to the extent provided in section 45H(d),”.

Subsec. (a)(33). Pub. L. 110–172, § 11(a)(21), substituted “section 25C(f)” for “section 25C(e)”.

Pub. L. 110–172, § 7(a)(1)(C), redesignated par. (34) as (33). Former par. (33) redesignated (32).

Subsec. (a)(34), (35). Pub. L. 110–172, § 7(a)(1)(C), redesignated pars. (35) and (36) as (34) and (35), respectively. Former par. (34) redesignated (33).

Subsec. (a)(36). Pub. L. 110–172, § 11(a)(22), substituted “section 30C(e)(1)” for “section 30C(f)”.

Pub. L. 110–172, § 7(a)(1)(C), redesignated par. (37) as (36). Former par. (36) redesignated (35).

Subsec. (a)(37). Pub. L. 110–172, § 7(a)(1)(C), redesignated par. (37) as (36).

2005—Subsec. (a)(23). Pub. L. 109–135 substituted “1045(b)(3)” for “1045(b)(4)”.

Subsec. (a)(32). Pub. L. 109–58, § 1331(b)(1), added par. (32).

Subsec. (a)(33). Pub. L. 109–58, § 1332(c), added par. (33).

Subsec. (a)(34). Pub. L. 109–58, § 1333(b)(1), added par. (34).

Subsec. (a)(35). Pub. L. 109–58, § 1335(b)(4), added par. (35).

Subsec. (a)(36). Pub. L. 109–58, § 1341(b)(2), added par. (36).

Subsec. (a)(37). Pub. L. 109–58, § 1342(b)(2), added par. (37).

2004—Subsec. (a)(13). Pub. L. 108–357, § 413(c)(19), struck out par. (13) which read as follows: “to the extent provided in section 551(e) in the case of the stock of United States shareholders in a foreign personal holding company;”.

Subsec. (a)(29). Pub. L. 108–357, § 245(c)(2), added par. (29).

Subsec. (a)(30). Pub. L. 108–357, § 338(b)(4), added par. (30).

Subsec. (a)(31). Pub. L. 108–357, § 339(d), added par. (31).

2001—Subsec. (a)(28). Pub. L. 107–16 added par. (28).

2000—Subsec. (a)(23). Pub. L. 106–554 substituted “1045, or 1397B” for “or 1045” and “1045(b)(4), or 1397B(b)(4)” for “or 1045(b)(4)”.

1997—Subsec. (a)(7). Pub. L. 105–34, § 312(d)(6), inserted “(as in effect on the day before the date of the enactment of the Taxpayer Relief Act of 1997)” after “section 1034” and “(as so in effect)” after “section 1034(e)”.

Subsec. (a)(23). Pub. L. 105–34, § 313(b)(1), substituted “, 1044, or 1045” for “or 1044” and “, 1044(d), or 1045(b)(4)” for “or 1044(d)”.

Subsec. (a)(27). Pub. L. 105–34, § 701(b)(2), added par. (27).

1996—Subsec. (a)(20). Pub. L. 104–188, § 1704(t)(56), provided that section 11813(b)(19) of Pub. L. 101–508 shall be applied as if “Paragraph (20) of section 1016(a), as redesignated by section 11801,” appeared instead of “paragraph (21) of section 1016(a)”. See 1990 Amendment note below.

Subsec. (a)(26). Pub. L. 104–188, § 1807(c)(5), added par. (26).

1993—Subsec. (a)(19) to (23). Pub. L. 103–66, § 13261(f)(3), redesignated pars. (20) to (24) as (19) to (23), respectively, and struck out former par. (19) which read as follows: “for amounts allowed as deductions for payments made on account of transfers of franchises, trademarks, or trade names under section 1253(d)(2);”.

Subsec. (a)(24). Pub. L. 103–66, § 13261(f)(3), redesignated par. (25) as (24). Former par. (24) redesignated (23).

Pub. L. 103–66, § 13114(b), substituted “section 1043 or 1044” for “section 1043” and “section 1043(c) or 1044(d), as the case may be” for “section 1043(c)”.

Subsec. (a)(25), (26). Pub. L. 103–66, § 13261(f)(3), redesignated pars. (25) and (26) as (24) and (25), respectively.

Subsec. (e). Pub. L. 103–66, § 13213(a)(2)(F), amended heading and text of subsec. (e) generally. Prior to amendment, text read as follows:

“(1) For treatment of certain expenses incident to the purchase of a residence which were deducted as moving expenses by the taxpayer or his spouse under section 217(a), see section 217(e).

“(2) For treatment of separate mineral interests as one property, see section 614.”

1992—Subsec. (a)(25), (26). Pub. L. 102–486 added pars. (25) and (26).

1990—Subsec. (a)(2). Pub. L. 101–508, § 11812(b)(10), substituted “under the straight line method” for “under section 167(b)(1)” in concluding provisions.

Subsec. (a)(20). Pub. L. 101–508, § 11813(b)(19), which directed the amendment of subsec. (a)(21) by striking “section 48(q)” and inserting “section 50(c)”, was executed to subsec. (a)(20). See 1996 Amendment note above.

Pub. L. 101–508, § 11801(c)(1), redesignated par. (21) as (20) and struck out former par. (20) which read as follows: “to the extent provided in section 23(e), in the case of property with respect to which a credit has been allowed under section 23;”.

Subsec. (a)(21) to (25). Pub. L. 101–508, § 11801(c)(1), redesignated pars. (21) to (25) as (20) to (24), respectively.

1989—Subsec. (a)(25). Pub. L. 101–194 added par. (25).

1988—Subsec. (a)(5). Pub. L. 100–647, § 1006(j)(1)(B), inserted “(or the amount applied to reduce interest payments under section 171(e)(2))” after “allowable pursuant to section 171(a)(1)”.

Subsec. (a)(21) to (26). Pub. L. 100–647, § 1018(u)(22), added pars. (21) to (24) and struck out former pars. (23) to (26) which read as follows:

“(23) to the extent provided in section 48(q) in the case of expenditures with respect to which a credit has been allowed under section 38;

“(24) for amounts allowed as deductions under section 59(d) (relating to optional 10-year writeoff of certain tax preferences);

“(25) to the extent provided in section 1059 (relating to reduction in basis for extraordinary dividends); and

“(26) in the case of qualified replacement property, the acquisition of which resulted under section 1042 in the nonrecognition of any part of the gain realized on the sale or exchange of any property, to the extent provided in section 1042(c).”

Former pars. (21) and (22) had been struck out previously.

1986—Subsec. (a). Pub. L. 99–514, § 1899A(25), which directed the amendment of pars. (23) to (26) by substituting a semicolon for a comma at the end thereof was executed to pars. (24) to (26) in view of the prior repeal of par. (23).

Pub. L. 99–514, § 1303(b)(3), which directed the amendment of subsec. (a) by striking out par. (22) and redesignating pars. (23) to (27) as (22) to (26), respectively, was executed by striking out par. (21) to reflect the probable intent of Congress in view of the amendment by section 241(b)(2) of Pub. L. 99–514. Prior to the amendment, par. (21) read as follows: “to the extent provided in section 1395 in the case of stock of shareholders of a general stock ownership corporation (as defined in section 1391) which makes the election provided by section 1392;”.

Pub. L. 99–514, § 241(b)(2), redesignated pars. (17) to (27) as (16) to (26), respectively, and struck out former par. (16) which read as follows: “for amounts allowed as deductions for expenditures treated as deferred expenses under section 177 (relating to trademark and trade name expenditures) and resulting in a reduction of the taxpayer’s taxes under this subtitle, but not less than the amounts allowable under such section for the taxable year and prior years;”.

Subsec. (a)(24). Pub. L. 99–514, § 701(e)(4)(D), substituted “section 59(d)” for “section 58(i)”.

1984—Subsec. (a)(17). Pub. L. 98–369, § 211(b)(14), substituted “section 811(b)” for “section 818(b)” in two places.

Subsec. (a)(21). Pub. L. 98–369, § 474(r)(23), substituted “section 23(e)” for “section 44C(e)” and “section 23” for “section 44C”.

Subsec. (a)(26). Pub. L. 98–369, § 53(d)(3), added par. (26).

Subsec. (a)(27). Pub. L. 98–369, § 541(b)(2), added par. (27).

Subsec. (b). Pub. L. 98–369, § 43(a)(2), struck out “The term ‘substituted basis’ as used in this section means a basis determined under any provision of this subchapter and subchapters C (relating to corporate distributions and adjustments), K (relating to partners and partnerships), and P (relating to capital gains and losses), or under any corresponding provision of a prior income tax law, providing that the basis shall be determined (1) by reference to the basis in the hands of a transferor, donor, or grantor, or (2) by reference to other property held at any time by the person for whom the basis is to be determined.” See section 7701(a)(42) of this title.

1982—Subsec. (a)(18). Pub. L. 97–354 substituted “section 1367” for “section 1376”, “indebtedness owed to” for “indebtedness owing”, and “an S corporation” for “an electing small business corporation (as defined in section 1371(b))”.

Subsec. (a)(24). Pub. L. 97–248, § 205(a)(5)(B), substituted “to the extent provided in section 48(q)” for “to the extent provided in section 48(g)(5)”.

Subsec. (a)(25). Pub. L. 97–248, § 201(c)(2), added par. (25).

1981—Subsec. (a)(24). Pub. L. 97–34, § 212(d)(2)(G), added par. (24).

Subsec. (c). Pub. L. 97–34, § 421(g), substituted provisions respecting increase in basis of property on which additional estate tax is imposed for provisions for increase in basis in the case of certain involuntary conversions, if such compulsory or involuntary conversions are within the meaning of section 1033, and an additional estate tax is imposed under section 2032A, and provisions respecting time adjustment made.

1980—Subsec. (a)(22). Pub. L. 96–222, § 106(a)(2), redesignated par. (21), relating to the extent provided in section 1395 in the case of stock of shareholders of a general stock ownership corporation, as (22).

Subsec. (a)(23). Pub. L. 96–223, § 401(a), repealed the amendments made by Pub. L. 94–455, § 2005(a)(3), and Pub. L. 95–600, § 702(r)(3). See 1976 and 1978 Amendment notes below.

Subsec. (c). Pub. L. 96–223, § 401(c)(1), struck out provision relating to the net appreciation of in value of certain property and struck out references to section 1023 of this title.

1978—Subsec. (a)(21). Pub. L. 95–618, § 101(b)(3), added par. (21) relating to an adjustment to the extent provided in section 44C.

Pub. L. 95–600, § 601(b)(3), as amended by Pub. L. 96–222, § 106(a)(3), added par. (21) relating to an adjustment to the extent provided in section 1395.

Subsec. (a)(23). Pub. L. 95–600, § 702(r)(3), which redesignated par. (23) as (21), was repealed by Pub. L. 96–222, § 107(a)(2)(C), and Pub. L. 96–223, § 401(a). See Repeals note below.

Pub. L. 95–600, § 515(2), substituted “December 31, 1979” for “December 31, 1976”.

Subsec. (c). Pub. L. 95–472 added subsec. (c). Former subsec. (c) redesignated (d).

Subsec. (d). Pub. L. 95–618, § 201(b), added subsec. (d). Former subsec. (d) redesignated (e).

Pub. L. 95–472 redesignated former subsec. (c) as (d).

Subsec. (e). Pub. L. 95–618, § 201(b), redesignated former subsec. (d) as (e).

1976—Subsec. (a)(2). Pub. L. 94–455, § 1901(b)(29)(A), inserted “(as in effect before the date of the enactment of the Tax Reform Act of 1976)” after “under section 1020”.

Subsec. (a)(10). Pub. L. 94–455, § 1901(b)(21)(G), struck out par. (10) which related to adjustment for the amounts allowed as deductions as deferred expenses under section 615(b) of this title.

Subsec. (a)(13). Pub. L. 94–455, § 1901(b)(1)(F)(ii), substituted “section 551(e)” for “section 551(f)”.

Subsec. (a)(19). Pub. L. 94–455, § 1901(a)(123), (b)(30)(A), redesignated par. (20) as (19). Former par. (19), which related to adjustment of section 38 property to the extent provided in sections 48(g) and 203 of this title, was struck out.

Subsec. (a)(20). Pub. L. 94–455, § 1901(b)(30)(A), redesignated par. (22) as (20). Former par. (20) redesignated (19).

Subsec. (a)(21). Pub. L. 94–455, § 1901(b)(30)(A), struck out par. (21) which related to property adjustment to the extent provided in section 1022 of this title.

Subsec. (a)(22). Pub. L. 94–455, § 1901(b)(30)(A), redesignated par. (22) as (20).

Subsec. (a)(23). Pub. L. 94–455, § 2005(a)(3), added par. (23). See Repeals note below.

1969—Subsec. (a)(22). Pub. L. 91–172, § 516(c)(2)(B), added par. (22).

Subsec. (a)(10). Pub. L. 91–172, § 504(c)(4), limited exploration expenditures referred to in this par. to pre-1970 exploration expenditures.

Subsec. (c). Pub. L. 91–172, § 231(c)(3), redesignated existing provisions as par. (2) and added par. (1).

1964—Subsec. (a)(15). Pub. L. 88–272, § 227(b)(5), inserted “or domestic iron ore”.

Subsec. (a)(19). Pub. L. 88–272, § 203(a)(3)(C), inserted “and in section 203(a)(2) of the Revenue Act of 1964”.

Subsec. (a)(21). Pub. L. 88–272, § 225(j)(2), added par. (21).

1962—Subsec. (a)(3)(D). Pub. L. 87–834, § 8(g)(2), added subpar. (D).

Subsec. (a)(19). Pub. L. 87–834, § 2(f), added par. (19).

Subsec. (a)(20). Pub. L. 87–834, § 12(b)(4), added par. (20).

1959—Subsec. (a)(3)(C). Pub. L. 86–69, § 3(d)(1), added subpar. (C).

Subsec. (a)(17). Pub. L. 86–69, § 3(d)(2), added par. (17).

1958—Subsec. (a)(6). Pub. L. 85–866, § 2(b), struck out “short-term” before “municipal bond”.

Subsec. (a)(18). Pub. L. 85–866, § 64(d)(2), added par. (18).

1956—Subsec. (a)(16). Act June 29, 1956, added par. (16).

Amendment by Pub. L. 117–169 applicable to property placed in service after Dec. 31, 2022, see section 13301(i)(1) of Pub. L. 117–169, set out in a note under section 25C of this title.

Pub. L. 115–97, title I, § 13313(c), Dec. 22, 2017, 131 Stat. 2133, provided that: “The amendments made by this section [amending this section and repealing section 1044 of this title] shall apply to sales after December 31, 2017.”

Pub. L. 115–97, title I, § 13521(b), Dec. 22, 2017, 131 Stat. 2151, provided that: “The amendment made by this section [amending this section] shall apply to transactions entered into after August 25, 2009.”

Pub. L. 115–97, title I, § 13823(d), Dec. 22, 2017, 131 Stat. 2188, provided that: “The amendments made by this section [enacting subchapter Z of this chapter and amending this section] shall take effect on the date of the enactment of this Act [Dec. 22, 2017].”

Amendment by section 209(j)(2) of Pub. L. 113–295 effective as if included in the provisions of the American Recovery and Reinvestment Tax Act of 2009, Pub. L. 111–5, to which such amendment relates, see section 209(k) of Pub. L. 113–295, set out as a note under section 24 of this title.

Amendment by section 221(a)(2)(D), (34)(G), (75) 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.

Amendment by Pub. L. 111–148 terminated applicable to taxable years beginning after Dec. 31, 2011, and section is amended to read as if such amendment had never been enacted, see section 10909(c) of Pub. L. 111–148, set out as a note under section 1 of this title.

Amendment by Pub. L. 111–148 applicable to taxable years beginning after Dec. 31, 2009, see section 10909(d) of Pub. L. 111–148, set out as a note under section 1 of this title.

Amendment by section 1141(b)(3) of Pub. L. 111–5 applicable to vehicles acquired after Dec. 31, 2009, see section 1141(c) of Pub. L. 111–5, set out as a note under section 30B of this title.

Amendment by section 1142(b)(6) of Pub. L. 111–5 applicable to vehicles acquired after Feb. 17, 2009, see section 1142(c) of Pub. L. 111–5, set out as an Effective and Termination Dates of 2009 Amendment note under section 24 of this title.

Amendment by Pub. L. 110–343 applicable to taxable years beginning after Dec. 31, 2008, see section 205(e) of Pub. L. 110–343, set out as an Effective and Termination Dates of 2008 Amendment note under section 24 of this title.

Amendment by section 7(a)(1)(C) of Pub. L. 110–172 effective as if included in the provision of the American Jobs Creation Act of 2004, Pub. L. 108–357, to which such amendment relates, see section 7(e) of Pub. L. 110–172, set out as a note under section 1092 of this title.

Amendment by section 1331(b)(1) of Pub. L. 109–58 applicable to property placed in service after Dec. 31, 2005, see section 1331(d) of Pub. L. 109–58, set out as an Effective Date note under section 179D of this title.

Amendment by section 1332(c) of Pub. L. 109–58 applicable to qualified new energy efficient homes acquired after Dec. 31, 2005, in taxable years ending after such date, see section 1332(f) of Pub. L. 109–58, set out as a note under section 38 of this title.

Amendment by section 1333(b)(1) of Pub. L. 109–58 applicable to property placed in service after Dec. 31, 2005, see section 1333(c) of Pub. L. 109–58, set out as an Effective Date note under section 25C of this title.

Amendment by section 1335(b)(4) of Pub. L. 109–58 applicable to property placed in service after Dec. 31, 2005, in taxable years ending after such date, see section 1335(c) of Pub. L. 109–58, set out as a note under section 23 of this title.

Amendment by section 1341(b)(2) of Pub. L. 109–58 applicable to property placed in service after Dec. 31, 2005, in taxable years ending after such date, see section 1341(c) of Pub. L. 109–58, set out as an Effective Date note under section 30B of this title.

Amendment by section 1342(b)(2) of Pub. L. 109–58 applicable to property placed in service after Dec. 31, 2005, in taxable years ending after such date, see section 1342(c) of Pub. L. 109–58, set out as an Effective Date note under section 30C of this title.

Amendment by section 245(c)(2) of Pub. L. 108–357 applicable to taxable years beginning after Dec. 31, 2004, see section 245(e) of Pub. L. 108–357, set out as a note under section 38 of this title.

Amendment by section 338(b)(4) of Pub. L. 108–357 applicable to expenses paid or incurred after Dec. 31, 2002, in taxable years ending after such date, see section 338(c) of Pub. L. 108–357, set out as an Effective Date note under section 179B of this title.

Amendment by section 339(d) of Pub. L. 108–357 applicable to expenses paid or incurred after Dec. 31, 2002, in taxable years ending after such date, see section 339(f) of Pub. L. 108–357, set out as a note under section 38 of this title.

Amendment by section 413(c)(19) of Pub. L. 108–357 applicable to taxable years of foreign corporations beginning after Dec. 31, 2004, and to taxable years of United States shareholders with or within which such taxable years of foreign corporations end, see section 413(d)(1) of Pub. L. 108–357, set out as an Effective and Termination Dates of 2004 Amendments note under section 1 of this title.

Amendment by Pub. L. 107–16 applicable to taxable years beginning after Dec. 31, 2001, see section 205(c) of Pub. L. 107–16, set out as a note under section 38 of this title.

Pub. L. 106–554, § 1(a)(7) [title I, § 116(c)], Dec. 21, 2000, 114 Stat. 2763, 2763A–604, provided that: “The amendments made by this section [enacting subpart C of part III of subchapter U of this chapter, amending this section and sections 1223, 1394, 1400, and 1400B of this title, redesignating subpart C of part III of subchapter U of this chapter as subpart D of part III of subchapter U of this chapter, and renumbering sections 1397B and 1397C of this title as 1397C and 1397D, respectively, of this title] shall apply to qualified empowerment zone assets acquired after the date of the enactment of this Act [Dec. 21, 2000].”

Amendment by section 312(d)(6) of Pub. L. 105–34 applicable to sales and exchanges after May 6, 1997, with certain exceptions, see section 312(d) of Pub. L. 105–34, set out as a note under section 121 of this title.

Pub. L. 105–34, title III, § 313(c), Aug. 5, 1997, 111 Stat. 842, provided that: “The amendments made by this section [enacting section 1045 of this title and amending this section and section 1223 of this title] shall apply to sales after the date of enactment of this Act [Aug. 5, 1997].”

Amendment by section 701(b)(2) of Pub. L. 105–34 effective Aug. 5, 1997, see section 701(d) of Pub. L. 105–34, set out as a note under section 39 of this title.

Amendment by section 1807(c)(5) of Pub. L. 104–188 applicable to taxable years beginning after Dec. 31, 1996, see section 1807(e) of Pub. L. 104–188, set out as an Effective Date note under section 23 of this title.

Pub. L. 103–66, title XIII, § 13114(d), Aug. 10, 1993, 107 Stat. 431, provided that: “The amendments made by this section [enacting section 1044 of this title and amending this section] shall apply to sales on and after the date of the enactment of this Act [Aug. 10, 1993], in taxable years ending on and after such date.”

Amendment by section 13213(a)(2)(F) of Pub. L. 103–66 applicable to expenses incurred after Dec. 31, 1993, see section 13213(e) of Pub. L. 103–66 set out as a note under section 62 of this title.

Amendment by section 13261(f)(3) of Pub. L. 103–66 applicable, except as otherwise provided, with respect to property acquired after Aug. 10, 1993, see section 13261(g) of Pub. L. 103–66, set out as an Effective Date note under section 197 of this title.

Amendment by Pub. L. 102–486 applicable to property placed in service after June 30, 1993, see section 1913(c) of Pub. L. 102–486, set out as a note under section 53 of this title.

Amendment by section 11812(b)(10) of Pub. L. 101–508 applicable to property placed in service after Nov. 5, 1990, but not applicable to any property to which section 168 of this title does not apply by reason of subsec. (f)(5) of section 168, and not applicable to rehabilitation expenditures described in section 252(f)(5) of Pub. L. 99–514, see section 11812(c) of Pub. L. 101–508, set out as a note under section 42 of this title.

Amendment by section 11813(b)(19) of Pub. L. 101–508 applicable to property placed in service after Dec. 31, 1990, but not applicable to any transition property (as defined in section 49(e) of this title), any property with respect to which qualified progress expenditures were previously taken into account under section 46(d) of this title, and any property described in section 46(b)(2)(C) of this title, as such sections were in effect on Nov. 4, 1990, see section 11813(c) of Pub. L. 101–508, set out as a note under section 45K of this title.

Pub. L. 101–194, title V, § 502(c), Nov. 30, 1989, 103 Stat. 1755, provided that: “The amendments made by this section [enacting section 1043 of this title and amending this section and section 1223 of this title] shall apply to sales after the date of the enactment of this Act [Nov. 30, 1989].”

Amendment by section 1006(j)(1)(B) of Pub. L. 100–647 applicable in the case of obligations acquired after Dec. 31, 1987, with exception allowing taxpayer to elect to have amendment apply to obligations acquired after Oct. 22, 1986, see section 1006(j)(1)(C) of Pub. L. 100–647, set out as a note under section 171 of this title.

Amendment by section 1018(u)(22) 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.

Amendment by section 241(b)(2) of Pub. L. 99–514 applicable to expenditures paid or incurred after Dec. 31, 1986, except as otherwise provided, see section 241(c) of Pub. L. 99–514, set out as an Effective Date of Repeal note under former section 177 of this title.

Amendment by section 701(e)(4)(D) of Pub. L. 99–514 applicable to taxable years beginning after Dec. 31, 1986, with certain exceptions and qualifications, see section 701(f) of Pub. L. 99–514, set out as an Effective Date note under section 55 of this title.

Amendment by section 1303(b)(3) of Pub. L. 99–514 effective Oct. 22, 1986, see section 1311(f) of Pub. L. 99–514, as amended, set out as an Effective Date; Transitional Rules note under section 141 of this title.

Amendment by section 43(a)(2) 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.

Amendment by section 53(d)(3) of Pub. L. 98–369 applicable to distribution after Mar. 1, 1984, in taxable years ending after such date, see section 53(e)(1) of Pub. L. 98–369, set out as an Effective Date note under section 1059 of this title.

Amendment by section 211(b)(14) of Pub. L. 98–369 applicable to taxable years beginning after Dec. 31, 1983, see section 215 of Pub. L. 98–369, set out as an Effective Date note under section 801 of this title.

Amendment by section 474(r)(23) of Pub. L. 98–369 applicable to taxable years beginning after Dec. 31, 1983, and to carrybacks from such years, see section 475(a) of Pub. L. 98–369, set out as a note under section 21 of this title.

Amendment by section 541(b)(2) of Pub. L. 98–369 applicable to sales of securities in taxable years beginning after July 18, 1984, see section 541(c) of Pub. L. 98–369, set out as an Effective Date note under section 1042 of this title.

Amendment by Pub. L. 97–354 applicable to taxable years beginning after Dec. 31, 1982, see section 6(a) of Pub. L. 97–354, set out as an Effective Date note under section 1361 of this title.

Amendment by section 201(c)(2) of Pub. L. 97–248 applicable to taxable years beginning after Dec. 31, 1982, see section 201(e)(1) of Pub. L. 97–248, set out as a note under section 5 of this title.

Amendment by section 205(a)(5)(B) of Pub. L. 97–248 applicable to periods after Dec. 31, 1982, under rules similar to the rules of section 48(m) of this title, with certain qualifications, see section 205(c)(1) of Pub. L. 97–248, set out as an Effective Date note under section 196 of this title.

Amendment by section 212(d)(2)(G) of Pub. L. 97–34 applicable to expenditures incurred after Dec. 31, 1981, in taxable years ending after that date, see section 212(e) of Pub. L. 97–34, set out as a note under section 46 of this title.

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

Amendment by section 401(a) of Pub. L. 96–223 (repealing section 2005(a)(3) of Pub. L. 94–455 and section 702(r)(3) of Pub. L. 96–500 and the amendments made thereby, which had amended this section) applicable in respect of decedents dying after Dec. 31, 1976, and except for certain elections, this title to be applied as if those repealed provisions had not been enacted, see section 401(b), (e) of Pub. L. 96–223, set out as a note under section 1023 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 an Effective Date of 1980 Amendment note under section 32 of this title.

Pub. L. 95–618, title I, § 101(c), Nov. 9, 1978, 92 Stat. 3180, provided that: “The amendments made by this section [enacting section 23 of this title and amending this section and sections 56 and 6096 of this title] shall apply to taxable years ending on or after April 20, 1977.”

Amendment by section 201(b) of Pub. L. 95–618 applicable with respect to 1980 and later model year automobiles, see section 201(g) of Pub. L. 95–618, set out as an Effective Date note under section 4064 of this title.

Amendment by section 601(b)(3) of Pub. L. 95–600 effective with respect to corporations chartered after Dec. 31, 1978, and before Jan. 1, 1984, see section 601(d) of Pub. L. 95–600, set out as a note under section 172 of this title.

Amendment by section 702(r)(3) of 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.

Pub. L. 95–472, § 4(d), Oct. 17, 1978, 92 Stat. 1336, provided that: “The amendments made by this section [amending this section and section 2032A of this title] shall apply to involuntary conversions after December 31, 1976.”

Amendment by section 1901(a)(123), (b)(1)(F)(ii), (21)(G), (29)(A) of Pub. L. 94–455 applicable with respect to 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.

Pub. L. 94–455, title XIX, § 1901(b)(30)(B), Oct. 4, 1976, 90 Stat. 1799, provided that: “The amendment made by subparagraph (A)(i) [amending this section] shall apply with respect to stock or securities acquired from a decedent dying after the date of the enactment of this Act [Oct. 4, 1976].”

Amendment by section 2005(a)(3) of Pub. L. 94–455 applicable in respect of decedents dying after Dec. 31, 1976, see section 2005(f) of Pub. L. 94–455 set out as an Effective Date note under section 1015 of this title.

Amendment by section 231(c)(3) of Pub. L. 91–172 applicable to taxable years beginning after Dec. 31, 1969, see section 231(d) of Pub. L. 91–172, set out as a note under section 217 of this title.

Amendment by section 504(c)(4) of Pub. L. 91–172 applicable with respect to exploration expenditures paid or incurred after Dec. 31, 1969, see section 504(d)(1) of Pub. L. 91–172, set out as a note under section 243 of this title.

Amendment by section 516(c)(2)(B) of Pub. L. 91–172 applicable to transfers after Dec. 31, 1969, see section 516(d)(3) of Pub. L. 91–172, set out as an Effective Date note under section 1001 of this title.

Amendment by section 203(a)(3)(C) of Pub. L. 88–272 applicable in case of property placed in service after Dec. 31, 1963, with respect to taxable years ending after such date, and in case of property placed in service before Jan. 1, 1964, with respect to taxable years beginning after Dec. 31, 1963, see section 203(a)(4) of Pub. L. 88–272, set out as a note under section 48 of this title.

Amendment by section 225(j)(2) of Pub. L. 88–272 applicable in respect of decedents dying after Dec. 31, 1963, see section 225(l) of Pub. L. 88–272, set out as a note under section 316 of this title.

Amendment by section 227(b)(5) of Pub. L. 88–272 applicable with respect to amounts received or accrued in taxable years beginning after Dec. 31, 1963, attributable to iron ore mined in such years, see section 227(c) of Pub. L. 88–272, set out as a note under section 272 of this title.

Amendment by section 2(f) of Pub. L. 87–834 applicable with respect to taxable years ending after Dec. 31, 1961, see section 2(h) of Pub. L. 87–834, set out as an Effective Date note under section 46 of this title.

Amendment by section 8(g)(2) of Pub. L. 87–834 applicable with respect to taxable years beginning after Dec. 31, 1962, see section 8(h) of Pub. L. 87–834, set out as a note under section 501 of this title.

Amendment by section 12(b)(1) of Pub. L. 87–834 applicable with respect to taxable years of foreign corporations beginning after Dec. 31, 1962, and to taxable years of United States shareholders within which or with which such taxable years of such foreign corporations end, see section 12(c) of Pub. L. 87–834, set out as an Effective Date note under section 951 of this title.

Amendment by Pub. L. 86–69 applicable only with respect to taxable years beginning after Dec. 31, 1957, see section 4 of Pub. L. 86–69, set out as a note under section 381 of this title.

Amendment by section 2(b) of Pub. L. 85–866 applicable with respect to taxable years ending after December 31, 1957, but only with respect to obligations acquired after such date, see section 2(c) of Pub. L. 85–866, set out as a note under section 75 of this title.

Amendment by section 64(d)(2) of Pub. L. 85–866 applicable only with respect to taxable years beginning after Dec. 31, 1957, see section 64(e) of Pub. L. 85–866, set out as a note under section 172 of this title.

Section 2005(a)(3) of Pub. L. 94–455 and section 702(r)(3) of Pub. L. 95–600, cited as credits to this section, and the amendments made by those sections, were repealed by Pub. L. 96–223, title IV, § 401(a), 94 Stat. 299, resulting in the text of this section reading as it read prior to enactment of sections 2005(a)(3) and 702(r)(3). See Effective Date of 1980 Amendments and Revival of Prior Law note above.

Amendment by section 401(d)(4)(B)(iv) of Pub. L. 115–141 not applicable to certain obligations issued, DC Zone assets acquired, or principal residences acquired before Jan. 1, 2012, see section 401(d)(4)(C) of Pub. L. 115–141, set out as a note under former section 1400 of this title.

For provisions that nothing in amendment by section 401(d)(4)(B)(iv) of 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 provisions that nothing in amendment by Pub. L. 101–508 be construed to affect treatment of certain transactions occurring, property acquired, or items of income, loss, deduction, or credit taken into account prior to Nov. 5, 1990, for purposes of determining liability for tax for periods ending after Nov. 5, 1990, see section 11821(b) of Pub. L. 101–508, set out as a note under section 45K of this title.

For applicability of amendment by section 701(e)(4)(D) of Pub. L. 99–514 notwithstanding 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)(2), (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 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.

Pub. L. 85–866, title I, § 94, Sept. 2, 1958, 72 Stat. 1669, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that: