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 Question Thank you! Oops! Related Content Starting a Roth IRA for a Teen This early financial decision could prove helpful over time. Risk Perspective Is it possible to avoid loss? Not entirely, but you can attempt to manage risk. The 12 Steps to Living Confidently: How to Protect Yourself Protection. We’re obsessed with it these days.