Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. 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 6 Tips From Tech Start-ups for Your Non-tech Business Let’s suppose you’re reading this on your phone. You’re wearing clothes that you bought online, and you’re on your way to... How Income Taxes Work A quick look at how federal income taxes work. How the Federal Reserve Works Each day, the Fed is behind the scenes supporting the economy and providing services to the U.S. financial system.