Taxable income defined

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Title 26—INTERNAL REVENUE CODE > Subtitle A—Income Taxes > CHAPTER 1—NORMAL TAXES AND SURTAXES > Subchapter B—Computation of Taxable Income > PART I—DEFINITION OF GROSS INCOME, ADJUSTED GROSS INCOME, TAXABLE INCOME, ETC.

This text was captured on Sep 16, 2026. It is a snapshot, not a live feed, so check the official code before relying on it.

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Except as provided in subsection (b), for purposes of this subtitle, the term “taxable income” means gross income minus the deductions allowed by this chapter (other than the standard deduction).

( Aug. 16, 1954, ch. 736 , 68A Stat. 18 ; Pub. L. 95–30, title I, § 102(a) , May 23, 1977 , 91 Stat. 135 ; Pub. L. 95–600, title I, § 101(b) , Nov. 6, 1978 , 92 Stat. 2769 ; Pub. L. 97–34, title I , §§ 104(b), 111(b)(4), 121(b), (c)(2), Aug. 13, 1981 , 95 Stat. 189 , 194, 196, 197; Pub. L. 99–514, title I, § 102(a) , title XII, § 1272(d)(6), Oct. 22, 1986 , 100 Stat. 2099 , 2594; Pub. L. 100–647, title I, § 1001(b)(1) , Nov. 10, 1988 , 102 Stat. 3349 ; Pub. L. 101–508, title XI , §§ 11101(d)(1)(D), 11801(a)(4), Nov. 5, 1990 , 104 Stat. 1388–405 , 1388–520; Pub. L. 103–66, title XIII, § 13201(b)(3)(D) , Aug. 10, 1993 , 107 Stat. 459 ; Pub. L. 105–34, title XII, § 1201(a) , Aug. 5, 1997 , 111 Stat. 993 ; Pub. L. 107–16, title III, § 301(a) , (b), (c)(2), June 7, 2001 , 115 Stat. 53 , 54; Pub. L. 107–147, title IV, § 411(e) , Mar. 9, 2002 , 116 Stat. 46 ; Pub. L. 108–27, title I, § 103(a) , May 28, 2003 , 117 Stat. 754 ; Pub. L. 108–311, title I, § 101(b) , Oct. 4, 2004 , 118 Stat. 1167 ; Pub. L. 110–289, div. C, title I, § 3012(a) , (b), July 30, 2008 , 122 Stat. 2891 , 2892; Pub. L. 110–343, div. C, title II, § 204(a) , title VII, § 706(b)(1), (2), Oct. 3, 2008 , 122 Stat. 3865 , 3922; Pub. L. 111–5, div. B, title I, § 1008(c) , Feb. 17, 2009 , 123 Stat. 318 ; Pub. L. 113–295, div. A, title II, § 221(a)(13) , Dec. 19, 2014 , 128 Stat. 4039 ; Pub. L. 115–97, title I , §§ 11002(d)(1)(K), 11011(b)(2), (3), 11021(a), Dec. 22, 2017 , 131 Stat. 2060 , 2070, 2072; Pub. L. 115–141, div. T, § 101(a)(2)(A) , Mar. 23, 2018 , 132 Stat. 1155 ; Pub. L. 116–260, div. EE, title II, § 212(b) , Dec. 27, 2020 , 134 Stat. 3067 ; Pub. L. 119–21, title VII , §§ 70102(a), (b), 70201(b), 70202(b), 70203(b), July 4, 2025 , 139 Stat. 158 , 171, 174, 177; Pub. L. 119–108, § 2(c) , Sept. 11, 2026 , 140 Stat. 1020 .)

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