OLRC release point
Subsec. (d). Pub. L. 117–169 substituted “the taxes imposed by subsection (a) and section 55” for “the tax imposed by subsection (a)”.
IRA 2022 → Source credit
Pub. L. 117–169, title I, § 10101(a)(4)(C), Aug. 16, 2022, 136 Stat. 1822.
Annual edition
Subsec. (b). Pub. L. 115–97, § 13001(a), amended subsec. (b) generally. Prior to amendment, text read as follows:
TCJA → Source credit
Pub. L. 115–97, title I, §§ 12001(b)(11), 13001(a), Dec. 22, 2017, 131 Stat. 2094, 2096
Annual edition
Subsec. (b)(1). Pub. L. 103–66, § 13221(a)(3), inserted at end of closing provisions “In the case of a corporation which has taxable income in excess of $15,000,000, the amount of the tax determined under the foregoing provisions of this paragraph shall be increased by an additional amount equal to the lesser of (i) 3 percent of such excess, or (ii) $100,000.”
Source credit
Pub. L. 103–66, title XIII, § 13221(a), (b), Aug. 10, 1993, 107 Stat. 477
Nov 10, 1988 – Aug 10, 1993
Amended · full text not held
Subsec. (d). Pub. L. 100–647 substituted “the taxes imposed by subsection (a) and section 55” for “the tax imposed by subsection (a)”.
Source credit
Pub. L. 100–647, title I, § 1007(g)(13)(B), Nov. 10, 1988, 102 Stat. 3436
Dec 22, 1987 – Nov 10, 1988
Amended · full text not held
Subsec. (b). Pub. L. 100–203 amended subsec. (b) generally. Prior to amendment, subsec. (b) read as follows: “The amount of the tax imposed by subsection (a) shall be the sum of—
Source credit
Pub. L. 100–203, title X, § 10224(a), Dec. 22, 1987, 101 Stat. 1330–412
Oct 22, 1986 – Dec 22, 1987
Amended · full text not held
Subsec. (b). Pub. L. 99–514 amended subsec. (b) generally. Prior to amendment, subsec. (b) read as follows: “The amount of the tax imposed by subsection (a) shall be the sum of—
IRC → Source credit
Pub. L. 99–514, title VI, § 601(a), Oct. 22, 1986, 100 Stat. 2249
Jul 18, 1984 – Oct 22, 1986
Amended · full text not held
Subsec. (b). Pub. L. 98–369 inserted “In the case of a corporation with taxable income in excess of $1,000,000 for any taxable year, the amount of tax determined under the preceding sentence for such taxable year shall be increased by the lesser of (A) 5 percent of such excess, or (B) $20,250.”
Source credit
Pub. L. 98–369, div. A, title I, § 66(a), July 18, 1984, 98 Stat. 585
Aug 13, 1981 – Jul 18, 1984
Amended · full text not held
Subsec. (b)(1). Pub. L. 97–34, § 231(a)(1), substituted “15 percent (16 percent for taxable years beginning in 1982)” for “17 percent”.
Source credit
Pub. L. 97–34, title II, § 231(a), Aug. 13, 1981, 95 Stat. 249
Nov 6, 1978 – Aug 13, 1981
Amended · full text not held
Pub. L. 95–600 reduced corporate tax rates by substituting provisions imposing a five-step tax rate structure on corporate taxable income for provisions using a normal tax and surtax approach to the taxation of corporate taxable income.
Source credit
Pub. L. 95–600, title III, § 301(a), Nov. 6, 1978, 92 Stat. 2820
May 23, 1977 – Nov 6, 1978
Amended · full text not held
Subsec. (b)(1). Pub. L. 95–30, § 201(1), substituted “December 31, 1978” for “December 31, 1977”.
Source credit
Pub. L. 95–30, title II, § 201(1), (2), May 23, 1977, 91 Stat. 141
Oct 4, 1976 – May 23, 1977
Amended · full text not held
Subsec. (a). Pub. L. 94–455 reenacted subsec. (a) without change.
Source credit
Pub. L. 94–455, title IX, § 901(a), Oct. 4, 1976, 90 Stat. 1606
Dec 23, 1975 – Oct 4, 1976
Amended · full text not held
Subsec. (b). Pub. L. 94–164 redesignated existing pars. (1) and (2) as pars. (1)(A) and (1)(B), and in par. (1)(A) as so redesignated substituted “after December 31, 1976” for “before January 1, 1975 or after December 31, 1975”, and in par. (1)(B) as so redesignated substituted “January 1, 1977” for “January 1, 1976”, and added par. (2).
Source credit
Pub. L. 94–164, § 4(a)–(c), Dec. 23, 1975, 89 Stat. 973, 974
Mar 29, 1975 – Dec 23, 1975
Amended · full text not held
Subsec. (b). Pub. L. 94–164 redesignated existing pars. (1) and (2) as pars. (1)(A) and (1)(B), and in par. (1)(A) as so redesignated substituted “after December 31, 1976” for “before January 1, 1975 or after December 31, 1975”, and in par. (1)(B) as so redesignated substituted “January 1, 1977” for “January 1, 1976”, and added par. (2).
Source credit
Pub. L. 94–12, title III, § 303(a), (b), Mar. 29, 1975, 89 Stat. 44
Dec 30, 1969 – Mar 29, 1975
Amended · full text not held
Subsec. (d). Pub. L. 91–172 substituted “section 1561 or 1564” for “section 1561”.
Source credit
Pub. L. 91–172, title IV, § 401(b)(2)(B), Dec. 30, 1969, 83 Stat. 602
Nov 13, 1966 – Dec 30, 1969
Amended · full text not held
Subsec. (e)(4). Pub. L. 89–809, § 104(b)(2)(A), struck out par. (4) which made reference to section 881(a) (relating to foreign corporations not engaged in business in United States).
Source credit
Pub. L. 89–809, title I, § 104(b)(2), Nov. 13, 1966, 80 Stat. 1557
Feb 26, 1964 – Nov 13, 1966
Amended · full text not held
Subsec. (b). Pub. L. 88–272 applied the 30 percent tax to years beginning before Jan. 1, 1964 instead of July 1, 1964 in par. (1), and in par. (2), reduced the rate from 25 percent to 22 percent, and applied it to years beginning after Dec. 31, 1963, instead of June 30, 1964.
Source credit
Pub. L. 88–272, title I, § 121, Feb. 26, 1964, 78 Stat. 25
Jun 29, 1963 – Feb 26, 1964
Amended · full text not held
Subsec. (b). Pub. L. 88–52 substituted “July 1, 1964” for “July 1, 1963” and “June 30, 1964” for “June 30, 1963” wherever appearing.
Source credit
Pub. L. 88–52, § 2, June 29, 1963, 77 Stat. 72
Jun 28, 1962 – Jun 29, 1963
Amended · full text not held
Subsec. (b). Pub. L. 87–508 substituted “July 1, 1963” for “July 1, 1962” and “June 30, 1963” for “June 30, 1962” wherever appearing.
Source credit
Pub. L. 87–508, § 2, June 28, 1962, 76 Stat. 114
Jun 30, 1961 – Jun 28, 1962
Amended · full text not held
Subsec. (b). Pub. L. 87–72 substituted “July 1, 1962” for “July 1, 1961” and “June 30, 1962” for “June 30, 1961” wherever appearing.
Source credit
Pub. L. 87–72, § 2, June 30, 1961, 75 Stat. 193
Sep 14, 1960 – Jun 30, 1961
Amended · full text not held
Subsec. (b). Pub. L. 86–564 substituted “July 1, 1961” for “July 1, 1960” and “June 30, 1961” for “June 30, 1960” wherever appearing.
Source credit
Pub. L. 86–779, § 10(d), Sept. 14, 1960, 74 Stat. 1009
Jun 30, 1960 – Sep 14, 1960
Amended · full text not held
Subsec. (b). Pub. L. 86–564 substituted “July 1, 1961” for “July 1, 1960” and “June 30, 1961” for “June 30, 1960” wherever appearing.
Source credit
Pub. L. 86–564, title II, § 201, June 30, 1960, 74 Stat. 290
Jun 30, 1959 – Jun 30, 1960
Amended · full text not held
Subsec. (b). Pub. L. 86–75 substituted “July 1, 1960” for “July 1, 1959” and “June 30, 1960” for “June 30, 1959” wherever appearing.
Source credit
Pub. L. 86–75, § 2, June 30, 1959, 73 Stat. 157
Jun 30, 1958 – Jun 30, 1959
Amended · full text not held
Subsec. (b). Pub. L. 85–475 substituted “July 1, 1959” for “July 1, 1958” and “June 30, 1959” for “June 30, 1958” wherever appearing.
Source credit
Pub. L. 85–475, § 2, June 30, 1958, 72 Stat. 259
Mar 29, 1957 – Jun 30, 1958
Amended · full text not held
Subsec. (b). Pub. L. 85–12 substituted “July 1, 1958” for “April 1, 1957” and “June 30, 1958” for “March 31, 1957” wherever appearing.
Source credit
Pub. L. 85–12, § 2, Mar. 29, 1957, 71 Stat. 9
Mar 29, 1956 – Mar 29, 1957
Amended · full text not held
Subsec. (b). Act Mar. 29, 1956, substituted “April 1, 1957” for “April 1, 1956” and “March 31, 1957” for “March 31, 1956” wherever appearing.
Source credit
Mar. 29, 1956, ch. 115, § 2, 70 Stat. 66
Mar 30, 1955 – Mar 29, 1956
Amended · full text not held
Subsec. (b). Act Mar. 30, 1955, substituted “April 1, 1956” for “April 1, 1955” and “March 31, 1956” for “March 31, 1955” wherever appearing.
Source credit
Mar. 30, 1955, ch. 18, § 2, 69 Stat. 14
Aug 16, 1954 – Mar 30, 1955
Enacted · full text not held
Source credit
Aug. 16, 1954, ch. 736, 68A Stat. 11
Every enactment and amendment in this section's credit is listed. Full text is shown for versions back to 1993; earlier amendments are recorded by date and act, without pre-1994 full text.
