Adjusted gross income defined

The deductions allowed by this chapter (other than by part VII of this subchapter) which are attributable to a trade or business carried on by the taxpayer, if such trade or business does not consist of the performance of services by the taxpayer as an employee.

( Aug. 16, 1954, ch. 736 , 68A Stat. 17 ; Pub. L. 87–792, § 7(b) , Oct. 10, 1962 , 76 Stat. 828 ; Pub. L. 88–272, title II, § 213(b) , Feb. 26, 1964 , 78 Stat. 52 ; Pub. L. 91–172, title V, § 531(b) , Dec. 30, 1969 , 83 Stat. 655 ; Pub. L. 93–406, title II , §§ 2002(a)(2), 2005(c)(9), Sept. 2, 1974 , 88 Stat. 959 , 992; Pub. L. 93–483, § 6(a) , Oct. 26, 1974 , 88 Stat. 1458 ; Pub. L. 94–455, title V, § 502(a) , title XV, § 1501(b)(1), title XIX, § 1901(a)(8), (9), Oct. 4, 1976 , 90 Stat. 1559 , 1735, 1765; Pub. L. 95–615, § 203(b) , Nov. 8, 1978 , 92 Stat. 3106 ; Pub. L. 96–451, title III, § 301(b) , Oct. 14, 1980 , 94 Stat. 1990 ; Pub. L. 96–608, § 3(a) , Dec. 28, 1980 , 94 Stat. 3551 ; Pub. L. 97–34, title I , §§ 103(b), 112(b)(2), title III, § 311(h)(1), Aug. 13, 1981 , 95 Stat. 187 , 195, 282; Pub. L. 97–354, § 5(a)(17) , Oct. 19, 1982 , 96 Stat. 1693 ; Pub. L. 98–369, div. A, title IV, § 491(d)(2) , July 18, 1984 , 98 Stat. 849 ; Pub. L. 99–514, title I , §§ 131(b)(1), 132(b), (c), title III, § 301(b)(1), title XVIII, § 1875(c)(3), Oct. 22, 1986 , 100 Stat. 2113 , 2115, 2116, 2217, 2894; Pub. L. 100–485, title VII, § 702(a) , Oct. 13, 1988 , 102 Stat. 2426 ; Pub. L. 100–647, title I, § 1001(b)(3)(A) , title VI, § 6007(b), Nov. 10, 1988 , 102 Stat. 3349 , 3687; Pub. L. 101–508, title XI, § 11802(e)(1) , Nov. 5, 1990 , 104 Stat. 1388–530 ; Pub. L. 102–318, title V, § 521(b)(2) , July 3, 1992 , 106 Stat. 310 ; Pub. L. 102–486, title XIX, § 1913(a)(2) , Oct. 24, 1992 , 106 Stat. 3019 ; Pub. L. 103–66, title XIII, § 13213(c)(1) , Aug. 10, 1993 , 107 Stat. 474 ; Pub. L. 104–188, title I, § 1401(b)(4) , Aug. 20, 1996 , 110 Stat. 1788 ; Pub. L. 104–191, title III, § 301(b) , Aug. 21, 1996 , 110 Stat. 2048 ; Pub. L. 105–34, title II, § 202(b) , title IX, § 975(a), Aug. 5, 1997 , 111 Stat. 808 , 898; Pub. L. 106–554, § 1(a)(7) [title II, § 202(b)(1)] , Dec. 21, 2000 , 114 Stat. 2763 , 2763A–629; Pub. L. 107–16, title IV, § 431(b) , June 7, 2001 , 115 Stat. 68 ; Pub. L. 107–147, title IV, § 406(a) , (b), Mar. 9, 2002 , 116 Stat. 43 ; Pub. L. 108–121, title I, § 109(b) , Nov. 11, 2003 , 117 Stat. 1341 ; Pub. L. 108–173, title XII, § 1201(b) , Dec. 8, 2003 , 117 Stat. 2476 ; Pub. L. 108–311, title III, § 307(a) , Oct. 4, 2004 , 118 Stat. 1179 ; Pub. L. 108–357, title VII, § 703(a) , (b), Oct. 22, 2004 , 118 Stat. 1546 , 1547; Pub. L. 109–135, title IV, § 412(q) , Dec. 21, 2005 , 119 Stat. 2638 ; Pub. L. 109–432, div. A, title I, § 108(a) , title IV, § 406(a)(3), Dec. 20, 2006 , 120 Stat. 2939 , 2959; Pub. L. 110–343, div. C, title II, § 203(a) , Oct. 3, 2008 , 122 Stat. 3864 ; Pub. L. 111–312, title VII, § 721(a) , Dec. 17, 2010 , 124 Stat. 3316 ; Pub. L. 112–240, title II, § 201(a) , Jan. 2, 2013 , 126 Stat. 2323 ; Pub. L. 113–295, div. A, title I, § 101(a) , title II, § 221(a)(34)(C), Dec. 19, 2014 , 128 Stat. 4012 , 4042; Pub. L. 114–113, div. Q, title I, § 104(a) –(c), Dec. 18, 2015 , 129 Stat. 3045 ; Pub. L. 115–97, title I , §§ 11002(d)(1)(J), 11011(b)(1), 11051(b)(2)(A), Dec. 22, 2017 , 131 Stat. 2060 , 2070, 2089; Pub. L. 115–123, div. D, title II, § 41107(a) , Feb. 9, 2018 , 132 Stat. 158 ; Pub. L. 115–141, div. T, § 101(a)(2)(B) , div. U, title IV, § 401(a)(31), (32), Mar. 23, 2018 , 132 Stat. 1155 , 1185, 1186; Pub. L. 116–92, div. A, title XI, § 1122(d)(2)(B) , Dec. 20, 2019 , 133 Stat. 1609 ; Pub. L. 116–136, div. A, title II, § 2204(a) , (b), Mar. 27, 2020 , 134 Stat. 345 ; Pub. L. 116–260, div. EE, title I, § 104(b)(2)(A) , title II, § 212(c), Dec. 27, 2020 , 134 Stat. 3041 , 3068.)