Regulations last checked for updates: Feb 16, 2025

Title 5 - Administrative Personnel last revised: Feb 13, 2025
§ 831.1002 - Definitions.

Contribution and benefit base means the contribution and benefit base in effect with respect to the tax year involved, as determined under section 230 of the Social Security Act (42 U.S.C. 430).

CSRS means the Civil Service Retirement System established under subchapter III of chapter 83 of title 5, United States Code.

Employee means an employee subject to CSRS.

Federal service means service covered under CSRS and subject to the OASDI tax by operation of section 101 of Public Law 98-21 (42 U.S.C. 410(a)). Federal service does not include—

(1) Service performed before January 1, 1984;

(2) Service subject to the OASDI tax only (that is, no simultaneous CSRS deductions), except in the case of an employee or Member who elected not to have any CSRS deductions withheld from salary pursuant to section 208(a)(1)(A) of Public Law 98-168, 97 Stat. 1111, or section 2206(b) of Public Law 98-369, 98 Stat. 1059, (relating to certain senior officials; and

(3) Service subject to the full rate of CSRS deductions (7, 7 1/2, or 8 percent) and the OASDI tax, pursuant to an election under section 208(a)(1)(B) of Public Law 98-168, 97 Stat. 1111, except in the case of an employee or Member who elects to become subject to this subpart under section 301(b) of Public Law 99-335, 100 Stat. 599.

Federal wages means basic pay, as defined under 5 U.S.C. 8331(4), of an employee or Member performing Federal service.

Member means a Member of Congress as defined by 5 U.S.C. 8331(2).

OASDI tax means, with respect to Federal wages, the Old Age, Survivors, and Disability Insurance tax imposed under section 3101(a) of the Internal Revenue Code of 1986 (31 U.S.C. 3101(a)).

authority: 5 U.S.C. 8347; Sec. 831.102 also issued under 5 U.S.C. 8334; Sec. 831.106 also issued under 5 U.S.C. 552a; Sec. 831.108 also issued under 5 U.S.C. 8336(d)(2); Sec. 831.114 also issued under 5 U.S.C. 8336(d)(2) and Sec. 1313(b)(5) of Pub. L. 107-296, 116 Stat. 2135; Sec. 831.201(b)(1) also issued under 5 U.S.C. 8347(g); Sec. 831.201(b)(6) also issued under 5 U.S.C. 7701(b)(2); Sec. 831.201(g) also issued under Secs. 11202(f), 11232(e), and 11246(b) of Pub. L. 105-33, 111 Stat. 251; Sec. 831.201(g) also issued under Secs. 7(b) and (e) of Pub. L. 105-274, 112 Stat. 2419; Sec. 831.201(i) also issued under Secs. 3 and 7(c) of Pub. L. 105-274, 112 Stat. 2419; Sec. 831.202 also issued under Sec. 111 of Pub. L. 99-500, 100 Stat. 1783, and Sec. 111 of Pub. L. 99-591, 100 Stat. 3341-348, and also Sec. 1 of Pub. L. 110-279, 122 Stat. 2602, as amended by Sec. 1(a) of Pub. L. 116-21, 133 Stat. 903; Sec. 831.204 also issued under Sec. 102(e) of Pub. L. 104-8, 109 Stat. 102, as amended by Sec. 153 of Pub. L. 104-134, 110 Stat. 1321; Sec. 831.205 also issued under Sec. 2207 of Pub. L. 106-265, 114 Stat. 784; Sec. 831.206 also issued under Sec. 1622(b) of Pub. L. 104-106, 110 Stat. 515; Sec. 831.301 also issued under Sec. 2203 of Pub. L. 106-265, 114 Stat. 780; Sec. 831.303 also issued under 5 U.S.C. 8334(d)(2) and Sec. 2203 of Pub. L. 106-235, 114 Stat. 780; Sec. 831.502 also issued under 5 U.S.C. 8337,and. 1(3), E.O. 11228, 3 CFR 1965-1965 Comp. p. 317; Sec. 831.663 also issued under 5 U.S.C. 8339(j) and (k)(2); Secs. 831.663 and 831.664 also issued under Sec. 11004(c)(2) of Pub. L. 103-66, 107 Stat. 412; Sec. 831.682 also issued under Sec. 201(d) of Pub. L. 99-251, 100 Stat. 23; Sec. 831.912 also issued under Sec. 636 of Appendix C to Pub. L. 106-554, 114 Stat. 2763A-164; Subpart P also issued under Sec. 535(d) of Title V of Division E of Pub. L. 110-161, 121 Stat. 2042; Subpart Q also issued under 5 U.S.C. 8336a; Subpart V also issued under 5 U.S.C. 8343a and Sec. 6001 of Pub. L. 100-203, 101 Stat. 1330-275; Sec. 831.2203 also issued under Sec. 7001(a)(4) of Pub. L. 101-508, 104 Stat. 1388-328; Pub. L. 115-352, 132 Stat. 5067 (5 U.S.C. 101)
source: 33 FR 12498, Sept. 4, 1968, unless otherwise noted.
cite as: 5 CFR 831.1002