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. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan. What Smart Investors Know Savvy investors take the time to separate emotion from fact. Your Shifting Risk Tolerance Time and market performance may subtly and slowly imbalance your portfolio.