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 Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more. What is the Value of Your Business? Ascertaining the value of your business is important for a variety of reasons. What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money.