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 A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies. Caring for Aging Parents As our nation ages, many Americans are turning their attention to caring for aging parents. Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill.