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 Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? 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. Why do Renters Have to Save More? How much more would retirement cost if you owned your home rather than rented? It could actually be several times less.