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 Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit. Working With A Financial Professional A financial professional is an invaluable resource to help you untangle the complexities of whatever life throws at you.