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 How Women Can Prepare For Retirement Are women prepared for a 20-year retirement? Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan. Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education.