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 The Basics of Medicare Learn all about Medicare basics in this informative and insightful article. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. Diversification, Patience, and Consistency Three important factors when it comes to your financial life.