Code of Federal Regulations Title 26. Internal Revenue § 26.31.3101–2 Rates and computation of employee tax

(a) Old–Age, Survivors, and Disability Insurance. The rates of employee tax for Old–Age, Survivors, and Disability Insurance (OASDI) with respect to wages received in calendar years after 1983 are as follows (these regulations do not reflect off–Code revisions to the following rates):

(c) Computation of employee tax. The employee tax is computed by applying to the wages received by the employee the rates in effect at the time such wages are received.

Example. In 1989, A performed services for X which constituted employment (see § 31.3121(b)–2). In 1990 A receives from X $1,000 as remuneration for such services. The tax is payable at the 6.2 percent OASDI rate and the 1.45 percent HI rate in effect for the calendar year 1990 (the year in which the wages are received) and not at the 6.06 percent OASDI rate and the 1.45 percent HI rate which were in effect for the calendar year 1989 (the year in which the services were performed).

(d) Effective/applicability date. Paragraphs (a), (b), and (c) of this section apply to quarters beginning on or after November 29, 2013.