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 Message Thank you! Oops! Related Content Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. 2016 Tax Data You Should Know Like it or not, taxes are part of life. Understanding them could help your tax-saving strategy. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income.