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 Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. What the New Tax Bill Means for You What does the Tax Reform and Jobs Act mean for you? Tax Management Strategies Learn more about taxes, tax-favored investing, and tax strategies.