Rates and computation of employer tax

(a) Old-age, survivors, and disability insurance. The rates of employer tax for old-age, survivors, and disability insurance with respect to wages paid in calendar years after 1954 are as follows:

Calendar year | Percent 1955 and 1956 | 2 1957 and 1958 | 2.25 1959 | 2.5 1960 and 1961 | 3 1962 | 3.125 1963 to 1965, both inclusive | 3.625 1966 | 3.85 1967 | 3.9 1968 | 3.8 1969 and 1970 | 4.2 1971 and 1972 | 4.6 1973 | 4.85 1974 to 2010, both inclusive | 4.95 2011 and subsequent calendar years | 5.95

(b) Hospital insurance. The rates of employer tax for hospital insurance with respect to wages paid in calendar years after 1965 are as follows:

Calendar year | Percent 1966 | 0.35 1967 | .50 1968 to 1972, both inclusive | .60 1973 | 1.0 1974 to 1977, both inclusive | 0.90 1978 to 1980, both inclusive | 1.10 1981 to 1985, both inclusive | 1.35 1986 and subsequent calendar years | 1.50

(c) Computation of employer tax. The employer tax is computed by applying to the wages paid by the employer the rate in effect at the time such wages are paid.