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 Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? 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.