Computation of annuities

The annuity of an individual under section 231a(a)(1) of this title shall be in an amount equal to the amount (before any reduction on account of age and before any deductions on account of work) of the old-age insurance benefit or disability insurance benefit to which such individual would have been entitled under the Social Security Act [ 42 U.S.C. 301 et seq.] if all of his or her service as an employee after December 31, 1936 , had been included in the term “employment” as defined in that Act.

( Aug. 29, 1935, ch. 812, § 3 , as restated June 24, 1937, ch. 382 , pt. I, 50 Stat. 307 , as restated Pub. L. 93–445, title I, § 101 , Oct. 16, 1974 , 88 Stat. 1319 ; amended Pub. L. 95–216, title III, § 358(a) , Dec. 20, 1977 , 91 Stat. 1556 ; Pub. L. 96–582, § 1 , Dec. 23, 1980 , 94 Stat. 3374 ; Pub. L. 97–35, title XI, § 1118 , Aug. 13, 1981 , 95 Stat. 630 ; Pub. L. 98–76, title I , §§ 101(a), 102(a), 107(a), (b), title IV, §§ 404(1), (2), 405(a), Aug. 12, 1983 , 97 Stat. 411 , 413, 418, 434, 435; Pub. L. 99–514, § 2 , Oct. 22, 1986 , 100 Stat. 2095 ; Pub. L. 107–90, title I , §§ 102(a), (c), 103(b), 104(a)(1), (2)(A), Dec. 21, 2001 , 115 Stat. 879 , 880, 882.)