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 Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. Insurance Needs Assessment: When You're Young and Single Even if you’re young and single, you should still consider protecting yourself. The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time.