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 Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters. Social Security: By the Numbers Here are five facts about Social Security that might surprise you. What is the Value of Your Business? Ascertaining the value of your business is important for a variety of reasons.