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 Keep Your Umbrella Handy Umbrella liability can be a fairly inexpensive way to help shelter current assets and future income from the unexpected. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement.