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 Do Your Kids Know The Value of a Silver Spoon? You taught them how to read and how to ride a bike, but have you taught your children how to manage money? Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. Does Your Child Need to File an Income Tax Return? When your child has income, there’s a good chance that he or she will need to report it and pay taxes.