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 Silver Sneakers 101 Medicare’s popular program, offering free gym membership and health education. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies.