Chapters 1, 2, 3, and 4 of the Internal Revenue Code of 1939, referred to in text, were comprised of sections 1 to 482, 500 to 706, 800 to 939, and 1000 to 1031 of former Title 26, Internal Revenue Code. Chapters 1 and 2 of the Internal Revenue Code of 1939 were repealed by section 7851(a)(1)(A) of this title, and chapters 3 and 4 of the Internal Revenue Code of 1939 were repealed by section 7851(a)(2)(A) of this title. For table of comparisons of the 1939 Code to the 1986 Code, see Table I preceding section 1 of this title. See also section 7851(e) of this title for provision that references in the 1986 Code to a provision of the 1939 Code, not then applicable, shall be deemed a reference to the corresponding provision of the 1986 Code, which is then applicable.

The Revenue Act of 1926, referred to in text, is act Fespan. 26, 1926, ch. 27, 44 Stat. 9. For complete classification of this Act to the Code, see Tables.