The Christmas Cove Dyke of coastal Maine, USA, and regional sources ... by McHone, J. Gregory; Hussey, Arthur M., II; West, David P., Jr.; Bailey, David G. / Atlantic Geology.
Social security and Medicare taxes have different rates and only the social security tax has a wage base limit. The wage base limit is the maximum wage subject to the tax for the year. Determine the amount of withholding for social security and Medicare taxes by multiplying each payment by the employee tax rate. There are no withholding allowances for social security and Medicare taxes.
Topic 751 - Social Security and Medicare Withholding Rates. Taxes under the Federal Insurance Contributions Act (FICA) are composed of the old-age, survivors, and disability insurance taxes, also known as social security taxes, and the hospital insurance tax, also known as Medicare taxes.