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 What’s Your Investment IQ? You make decisions for your portfolio, but how much do you really know about the products you buy? Try this quiz What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month. The History of Currency Currency has been around for a long time. Here’s a quick history lesson.