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 Content When Couples Know TV Over Finances Bonding with your significant other over TV plots is fun but when you know more about them than your money picture..... Tax Deductions: Catch Them All! Most of us pay too much in taxes because we aren’t aware of all the tax deductions available. What Smart Investors Know Savvy investors take the time to separate emotion from fact.