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 Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers. What to Do When You Lose Your Wallet Ever lost your wallet? Frustrating. Here’s what you can do to keep yourself safe. An Arm and a Leg A visit to the hospital can be painful, for both your body and your wallet. Don’t let it be more painful than it has to be.