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.
For both taxes, Social Security and Medicare, employers match their employees' contributions. In other words, U.S. workers only pay half of the payroll taxes contributed to Social Security and Medicare on their behalf. The Social Security and Medicare tax rates. The Social Security part of the payroll tax is assessed at a rate of 6.2% each for the employer and employee, for a combined rate of 12.4%. Social Security tax is only assessed on earned income up to a certain maximum each year.