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 The Great Debate Continues: Active vs. Passive In investments, one great debate asks the question, “Active or Passive Investing: Which Is Better?” The Cycle of Investing Understanding the cycle of investing may help you avoid easy pitfalls. What If You Get Audited? The chances of an IRS audit aren't that high. And being audited does not necessarily imply that the IRS suspects wrongdoing.