Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Lifetime of Earnings Estimate how much you have the potential to earn during your working years.