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 Where Will Your Retirement Money Come From? Retirement income may come from a variety of sources. Here's an overview of the six main sources. SECURE Act 2.0: An Overview The second iteration of the SECURE Act brings forward several changes to the world of retirement. The Sequence of Returns A look at how variable rates of return impact investors over time.