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. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content The Latte Lie and Other Myths Check out this video to begin separating fact from fiction. Travel, Without the Baggage Tips to avoid checking in luggage on your next vacation. Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program.