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 Message Thank you! Oops! Related Content 9 Facts About Retirement Regardless of how you approach retirement, there are some things about it that might surprise you. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are?