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 Question Thank you! Oops! Related Content Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too. Traditional vs. Roth IRA One or the other? Perhaps both traditional and Roth IRAs can play a part in your retirement plans. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind.