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. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content The Pros and Cons of Banking Your Money The Pros and Cons of Banking Your Money Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.