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 Contents Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Tax Rules When Selling Your Home The tax rules governing profits you realize from the sale of your home have changed in recent years. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.