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 What Is a 1031 Exchange? A look at 1031 Exchanges, a real estate investment strategy that may allow you to defer your capital gains taxes. Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return.