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 Managing Money as a Couple Keys to preparing to grow wealthy together. Market View Update - September 2016 The Dow Jones Industrial Average, Nasdaq, and S&P 500 have all hit record highs in recent weeks. Social Security: The 64,000 Dollar Question One of the most common questions people ask about Social Security is when they should start taking benefits.