Social Security Tax Estimator 2024. Estimate your tax refund or how much you may owe the irs with taxcaster tax calculator. A retiree can use the tax withholding estimator to enter any pension income or social security benefits they or their spouse receive.
And is based on the tax brackets of. For 2017, the oasdi (fica) tax rate is set at 6.2% of earnings with a cap at $127,200 (in 2018 this will be increasing to $128,400).