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.
Because 401(k) contributions are subject to Social Security tax, they are included in Social Security wages on Form W-2. The form shows your annual wages earned and taxes withheld for the year; you use it to file your tax return with the IRS and applicable state and local agencies.pecifically, if Social Security tax applies, so does Medicare tax. Your 401(k) contributions are subject to Medicare tax of 1.45 percent, as of 2012.