Social Security taxes: the details

    The Social Security tax is called FICA, after the Federal Insurance Contributions Act (1939). It is a payroll tax, as opposed to an income tax, because it is levied only on wages and not on other income.

    As of 1999--Legally, half (7.65%) of the tax is paid by the employee, and half by the employer. (Self-employed workers pay the full 15.3% of earnings up to $72,600 and 2.9% for earnings beyond $72,600.)  This provision makes no difference, however, to the economic incidence of the tax, which is not affected by the legal incidence.[econ] Typically the tax is "withheld" from the employee's wages and remitted to the government by the employer.

    Technically, the Social Security tax consists of two taxes:

    Thus, wages up to $72,600 are taxed at 15.3% (OASDI+HI) while wages past $72,600 are taxed at 2.9% (HI only). [s]

    Furthermore, the government separates OASDI tax receipts into two categories, OASI and DI. In fiscal year 1998, the government collected

Thus OASDI constituted $424b (25%) and HI $122b (7%) out of total government receipts of $1.72t. In comparison, individual income taxes netted $829b (48%) and corporation income taxes netted $189b (11%) [s]. Besides the fact that both government programs are labeled "OASI," there is no connection between OASI taxes and OASI spending; ditto for DI and HI.

Source: 1998 World Almanac, pp. 107, 717.

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