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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Travel, Without the Baggage Tips to avoid checking in luggage on your next vacation. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route. From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history.