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 Question Thank you! Oops! Related Content Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Earnings for All Seasons Earnings season can move markets. What is it and why is it important? Diversification, Patience, and Consistency Three important factors when it comes to your financial life.