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 Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. How Big is Money? Learn a little about worldwide currency in this fun infographic Financial Hacks for Millennials: It is Prime Time to Save While research shows you are saving and earning more than your parents, (woohoo!), are you preparing for the future you want? How can you ensure you are on track to make the most out of these important decades?