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 A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. U.S. Personal Savings Rate What can be learned from the savings rate? How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you.