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 Where Is the Market Headed? We all know the stock market can be unpredictable. We all want to know, “What’s next for the financial markets?” How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement.