26 U.S.C. § 7851
Applicability of revenue laws
Subtitle C of this title shall apply only with respect to remuneration paid after
Subtitle D of this title shall take effect on
Subtitle E shall take effect on
The provisions of subtitle F shall take effect on the day after the date of enactment of this title and shall be applicable with respect to any tax imposed by this title. The provisions of subtitle F shall apply with respect to any tax imposed by the Internal Revenue Code of 1939 only to the extent provided in subparagraphs (B) and (C) of this paragraph.
Notwithstanding the provisions of subparagraph (A), and notwithstanding any contrary provision of subchapter A of chapter 63 (relating to assessment), chapter 64 (relating to collection), or chapter 65 (relating to abatements, credits, and refunds) of this title, the provisions of part II of subchapter A of chapter 28 and chapters 35, 36, and 37 (except section 3777) of subtitle D of the Internal Revenue Code of 1939 shall remain in effect until
Except as otherwise provided in subparagraphs (B) and (C), the provisions of chapter 28 and of subtitle D of the Internal Revenue Code of 1939 shall remain in effect with respect to taxes imposed by the Internal Revenue Code of 1939.
If the effective date of any provision of the Internal Revenue Code of 1986 is not otherwise provided in this section or in any other section of this title, such provision shall take effect on the day after the date of enactment of this title. If the repeal of any provision of the Internal Revenue Code of 1939 is not otherwise provided by this section or by any other section of this title, such provision is hereby repealed effective on the day after the date of enactment of this title.
The repeal of any provision of the Internal Revenue Code of 1939 shall not affect any act done or any right accruing or accrued, or any suit or proceeding had or commenced in any civil cause, before such repeal; but all rights and liabilities under such code shall continue, and may be enforced in the same manner, as if such repeal had not been made.
Any delegation of authority made pursuant to the provisions of Reorganization Plan Numbered 26 of 1950 or Reorganization Plan Numbered 1 of 1952, including any redelegation of authority made pursuant to any such delegation of authority, and in effect under the Internal Revenue Code of 1939 immediately preceding the enactment of this title shall, notwithstanding the repeal of such code, remain in effect for purposes of this title, unless distinctly inconsistent or manifestly incompatible with the provisions of this title. The preceding sentence shall not be construed as limiting in any manner the power to amend, modify, or revoke any such delegation or redelegation of authority.
All offenses committed, and all penalties or forfeitures incurred, under any provision of law hereby repealed, may be prosecuted and punished in the same manner and with the same effect as if this title had not been enacted.
All periods of limitation, whether applicable to civil causes and proceedings, or to the prosecution of offenses, or for the recovery of penalties or forfeitures, hereby repealed shall not be affected thereby, but all suits, proceedings, or prosecutions, whether civil or criminal, for causes arising, or acts done or committed, prior to said repeal, may be commenced and prosecuted within the same time as if this title had not been enacted.
For the purpose of applying the Internal Revenue Code of 1939 or the Internal Revenue Code of 1986 to any period, any reference in either such code to another provision of the Internal Revenue Code of 1939 or the Internal Revenue Code of 1986 which is not then applicable to such period shall be deemed a reference to the corresponding provision of the other code which is then applicable to such period.
The date of enactment of this title, referred to in subsecs. (a)(1)(A), (5), (6)(A) to (C), (7) and (b)(2), (3), is
Various provisions of the Internal Revenue Code of 1939, referred to in text and described below, have corresponding provisions appearing in the Internal Revenue Code of 1986 [formerly I.R.C. 1954]. For table of comparisons of the 1939 Code to the 1986 Code, see Table I preceding section 1 of this title. See, also, subsec. (e) of this section for provision that references in the 1986 Code to a provision in the 1939 Code, not then applicable, shall be deemed a reference to the corresponding provision of the 1986 Code, which is then applicable.
Chapter 1 of the Internal Revenue Code of 1939, referred to in subsec. (a)(1)(A), (D), was comprised of sections 1 to 482 of former Title 26, Internal Revenue Code. Sections 1 to 33 were repealed by subsec. (a)(1)(A) of this section, section 34 was repealed by act Feb. 25, 1944, ch. 63, title I, § 106(c)(2), 58 Stat. 31, sections 35 to 184 were repealed by subsec. (a)(1)(A) of this section, section 185 was repealed by act Feb. 25, 1944, ch. 63, title I, § 107(a), 58 Stat. 31, sections 201 to 263 were repealed by subsec. (a)(1)(A) of this section, section 264 was repealed by act Oct. 21, 1942, ch. 619, title I, § 159(e), 56 Stat. 860, sections 265 to 362 were repealed by subsec. (a)(1)(A) of this section, section 363 was repealed by act Oct. 21, 1942, ch. 619, title I, § 170(a), 56 Stat. 878, sections 371 to 482 were repealed by subsec. (a)(1)(A) of this section.
Sections 143 and 144 of the Internal Revenue Code of 1939, referred to in subsec. (a)(1)(A), (B), were classified to sections 143 and 144 of former Title 26, Internal Revenue Code.
Chapter 2 of the Internal Revenue Code of 1939, referred to in subsec. (a)(1)(A), was comprised of sections 500 to 784 of former Title 26, Internal Revenue Code. Sections 500 to 511 and 650 to 706 were repealed by subsec. (a)(1)(A) of this section, sections 600 to 605 were repealed by act Nov. 8, 1945, ch. 453, title II, § 202, 59 Stat. 574, sections 710 to 736, 740, 742 to 744, 750, 751, 760, 761 and 780 to 784 were repealed by act Nov. 8, 1945, ch. 453, title I, § 122(a), 59 Stat. 568, section 741 was repealed by act Oct. 21, 1942, ch. 619, title II, §§ 224(b), 228(b), 56 Stat. 920, 925, section 752 was repealed by act Oct. 21, 1942, ch. 619, title II, § 229(a)(1), 56 Stat. 931, eff. as of
Section 3801 of the Internal Revenue Code of 1939, referred to in subsec. (a)(1)(A), was classified to section 3801 of former Title 26, Internal Revenue Code. Section 3801 was repealed by subsec. (a)(1)(A) of this section.
Chapter 7 of the Internal Revenue Code of 1939, referred to in subsec. (a)(1)(B), (4), was comprised of sections 1250 to 1254 of former Title 26, Internal Revenue Code.
The Internal Revenue Code of 1939, referred to in subsecs. (a)(1)(C), (4), (6)(A) to (C), (C)(iii), (D), (7), (b)(1) to (3), and (e), is act Feb. 10, 1939, ch. 2, 53 Stat. 1. Prior to the enactment of the Internal Revenue Code of 1986 [formerly I.R.C. 1954], the 1939 Code was classified to former Title 26, Internal Revenue Code.
Sections 13(b)(3), 26(b)(2)(C), 26(h)(1)(C), 26(i)(3), 108(k), 207(a)(1)(C), 207(a)(3)(C), and the last sentence of section 362(b)(3), referred to in subsec. (a)(1)(D)(i), were classified to former sections 13(b)(3), 26(b)(2)(C), (h)(1)(C), (i)(3), 108(k), 207(a)(1)(C), (3)(C), and 362(b)(3) of former Title 26, Internal Revenue Code. Sections 13(b)(3), 26(b)(2)(C), (h)(1)(C), (i)(3), 108(k), 207(a)(1)(C), (3)(C), and 362(b)(3) were repealed by subsec. (a)(1)(d)(i) of this section.
Sections 13(b)(2), 26(b)(2)(B), 26(h)(1)(B), 26(i)(2), 207(a)(1)(B), 207(a)(3)(B), 421(a)(1)(B), and the second sentence of section 362(b)(3), referred to in subsec. (a)(1)(D)(ii), were classified to sections 13(b)(2), 26(b)(2)(B), (h)(1)(B), (i)(2), 207(a)(1)(B), (3)(B), 421(a)(1)(B), and 362(b)(3) of former Title 26, Internal Revenue Code.
Chapter 3 of the Internal Revenue Code of 1939, referred to in subsec. (a)(2)(A), was comprised of sections 800 to 951 of former Title 26, Internal Revenue Code.
Chapter 4 of the Internal Revenue Code of 1939, referred to in subsec. (a)(2)(B), was comprised of sections 1000 to 1031 of former Title 26, Internal Revenue Code.
Chapter 9 of the Internal Revenue Code of 1939, referred to in subsec. (a)(3), (4), was comprised of sections 1400 to 1636 of former Title 26, Internal Revenue Code. Subchapters B and E of chapter 9 of the Internal Revenue Code of 1939 were comprised of sections 1500 to 1538, and 1630 to 1636, respectively, of former Title 26.
Subtitles B and C of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), were comprised of chapters 6 to 28, sections 1200 to 3361, and chapters 29 to 33A, sections 3400 to 3540, respectively, of former Title 26, Internal Revenue Code. Sections 1200 to 1207 of former Title 26 were repealed by act Nov. 8, 1945, ch. 453, title II, § 201, 59 Stat. 574. Sections 1250 to 1254, 1400 to 1627, 1631 to 1805, 1807 to 2300, 2302 to 2362, 2400 to 2475, 2477 to 2905, 2908 to 3150, 3152, 3153, 3155 to 3195, 3206 to 3212, 3220 to 3301, 3303 to 3335, 3350 to 3409, 3412 to 3451, and 3453 to 3508 of former Title 26, were repealed by subsec. (a)(4) of this section. Sections 1300 and 1301 were repealed by act June 10, 1952, ch. 390, 66 Stat. 133. Section 1630 was repealed by act Aug. 27, 1949, ch. 517, § 4(b), 63 Stat. 668. Section 1806 was repealed by act Mar. 11, 1947, ch. 117, § 8(c), 61 Stat. 13. Section 2301 was repealed by act Mar. 16, 1950, ch. 61, § 1, 64 Stat. 20. Sections 2380 to 2390, and 3215 to 3217 were repealed by act Oct. 21, 1942, ch. 619, title VI, § 619, 56 Stat. 979. Section 2476 was repealed by act Apr. 30, 1946, ch. 244, title V, § 506(b), 60 Stat. 157. Sections 2906 and 3302 were repealed by act Feb. 21, 1950, ch. 36, § 7, 64 Stat. 8. Section 2907 was repealed by act July 22, 1941, ch. 314, 55 Stat. 602. Sections 3151 and 3154 were repealed by act Aug. 27, 1949, ch. 498, § 6, 63 Stat. 626. Sections 3200 to 3202 were repealed by act Mar. 16, 1950, ch. 61, § 2, 64 Stat. 20. Sections 3340 to 3343 were repealed by act Apr. 30, 1946, ch. 244, title V, § 507(b), 60 Stat. 157. Section 3411 was repealed by act Oct. 20, 1951, ch. 521, title IV, § 488(a), 65 Stat. 536. Section 3452 was repealed by act Sept. 20, 1941, ch. 412, title V, § 501, 55 Stat. 706. Sections 3520 to 3528 expired by their own terms on
Chapter 15 of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), (5), was comprised of sections 2000 to 2199 of former Title 26, Internal Revenue Code. Chapter 15 was repealed by subsec. (a)(5) of this section.
Chapter 26 of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), (5), was comprised of sections 2800 to 3195 of former Title 26, Internal Revenue Code. Sections 2800 to 2905, 2908 to 3150, 3152, 3153, 3155 to 3195 were repealed by subsec. (a)(5) of this section. Section 2906 was repealed by act Feb. 21, 1950, ch. 36, § 7, 64 Stat. 8. Section 2907 was repealed by act July 22, 1941, ch. 314, § 3, 55 Stat. 602. Sections 3151 and 3154 were repealed by act Aug. 23, 1949, ch. 498, § 6, 63 Stat. 626.
Chapter 28 of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), (6)(B), (D), was comprised of sections 3300 to 3361 of former Title 26, Internal Revenue Code. Part II of subchapter A of chapter 27 of the Internal Revenue Code of 1939 was comprised of sections 3310 to 3314 of former Title 26.
Subchapter B of chapter 25 of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), (5), was comprised of sections 2720 to 2734 of former Title 26, Internal Revenue Code. Subchapter B of chapter 25 of the Internal Revenue Code of 1939 was repealed by subsec. (a)(5) of this section.
Parts VII and VIII of subchapter A of chapter 27 of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), (5), were comprised of sections 3250 to 3255 and 3260 to 3266, respectively, of former Title 26, Internal Revenue Code. Parts VII and VIII of subchapter A of chapter 27 of the Internal Revenue Code of 1939 were repealed by subsec. (a)(5) of this section.
Section 6416(b)(2)(H), referred to in subsec. (a)(4), was repealed by Pub. L. 98–369, div. A, title VII, § 735(c)(13)(B),
Section 4082, referred to in subsec. (a)(4), was amended generally by Pub. L. 99–514, title XVII, § 1703(a),
Section 2450(a) of the Internal Revenue Code of 1939, referred to in subsec. (a)(4), was classified to section 2450 of former Title 26, Internal Revenue Code. Section 2450 was repealed by subsec. (a)(4) of this section.
The Excise Tax Reduction Act of 1954, referred to in subsec. (a)(4), is act Mar. 31, 1954, ch. 126, 68 Stat. 37.
Subtitle D of the Internal Revenue Code of 1939, referred to in subsec. (a)(6)(B), (D), was comprised of chapters 34 to 38, sections 3600 to 3781 of former Title 26, Internal Revenue Code. Chapters 35, 36, and 37 of subtitle D of the Internal Revenue Code of 1939 were comprised of sections 3640 to 3647, 3650 to 3762, and 3770 to 3781, respectively, of former Title 26.
Section 3777 of the Internal Revenue Code of 1939, referred to in subsec. (a)(6)(B), was classified to section 3777 of former Title 26, Internal Revenue Code. Section 3777 was repealed by subsec. (a)(6)(B) of this section.
Reorganization Plan Numbered 26 of 1950, referred to in subsec. (b)(3), is Reorg. Plan No. 26 of 1950, eff.
Reorganization Plan Numbered 1 of 1952, referred to in subsec. (b)(3), is Reorg. Plan No. 1 of 1952, eff.
2018—Subsec. (a)(1)(A). Pub. L. 115–141, § 401(a)(335), struck out “, 4” after “Chapters 1, 2”.
Subsec. (a)(1)(B). Pub. L. 115–141, § 401(a)(336), substituted “Chapter 3” for “Chapters 3 and 5”.
1986—Subsecs. (a)(7), (e). Pub. L. 99–514 substituted “Internal Revenue Code of 1986” for “Internal Revenue Code of 1954”.
1976—Subsec. (a)(5). Pub. L. 94–455 struck out “or his delegate” after “Secretary”.