Prior sections 1001 to 1011, act Aug. 14, 1935, ch. 531, title VIII, §§ 801–811, 49 Stat. 636–639, related to taxes with respect to employment. Section 4 of act Feb. 10, 1939, ch. 2, 53 Stat. 1, which act enacted Title 26, Internal Revenue Code of 1939, provided that all laws and parts of laws codified into the I.R.C. 1939, to the extent that they related exclusively to internal revenue laws, were repealed. Provisions of I.R.C. 1939 were generally repealed by section 7851 of Title 26, Internal Revenue Code of 1954 (act Aug. 16, 1954, ch. 736, 68A Stat. 3). See, also, section 7807 of said Title 26, I.R.C. 1954, respecting rules in effect upon enactment of I.R.C. 1954. The I.R.C. 1954 was redesignated I.R.C. 1986 by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095. The omitted sections were formerly and are now covered by certain sections in Title 26, I.R.C. 1939 and I.R.C. 1986, respectively, as follows:

Omitted sections	I.R.C. 1939	I.R.C. 1986
1001	1400	3101.
1002	1402	3102.
1003	1401	3502.
1004	1410	3111.
1005	1411	6205(a), 6413(a).
1006	1421	6205(b), 6413(b).
1007	1420, 1430	3501.
1008	1429	7805(a), (c).
1009	1423, 1424	6801 et seq.
1010	1425	7208(1), 7209.
1011 (as amended Aug. 10, 1939, ch. 666, title IX, § 905(a), 53 Stat. 1400)	1426	3121, 7701(a)(1).

Section 1001 related to income tax on employees.

Section 1002 related to deduction of tax from wages.

Section 1003 related to deductibility from income taxes.

Section 1004 related to excise tax on employers.

Section 1005 related to adjustment of employers’ tax.

Section 1006 related to refunds and deficiencies.

Section 1007 related to collection and payment of taxes.

Section 1008 related to rules and regulations.

Section 1009 related to sale by postmasters of stamps or other devices for collection or payment of tax.

Section 1010 related to penalties.

Section 1011 related to definitions.