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 Question Thank you! Oops! Related Content Strategies for Managing Student Loan Debt Five strategies for managing your student debt. Saving for College 101 Here’s a crash course on saving for college. Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns.