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 Saving Early & Letting Time Work For You The earlier you start pursuing financial goals, the better your outcome may be. Potential Income from an IRA Estimate your monthly and annual income from various IRA types. What's New for Social Security? There have been a number of changes to Social Security that may affect you, especially if you are nearing retirement.