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 What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does. Avoiding Cognitive Decline Try these activities to keep your brain sharp.