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 Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible. To Catch a Thief Having your identity stolen may result in financial loss plus the cost of trying to restore your good name. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.