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.
Monthly Social Security Disability Insurance (SSDI) Generally, the IRS can tax up to 50 percent of your Social Security disability benefits. To calculate this amount, add one-half of your SSDI benefits plus all of your other income sources. You will owe taxes on any amount above a base level.