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 Message Thank you! Oops! Related Content Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics. Aware of Employment Rights for Workers with Disabilities? Approximately 20% of U.S. adults have a disability, according to the CDC. How Income Taxes Work A quick look at how federal income taxes work.