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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.