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 Managing an Inheritance A windfall from a loved one can be both rewarding and complicated. 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. Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers.