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 Home Ownership by the Numbers Tips on home-buying for Millennials. The Big Picture–Yellen Walks Steady Line Spoiler alert: interest on excess reserves, forward guidance, and asset buys will remain important. A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies.