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. Starting a Roth IRA for a Teen This early financial decision could prove helpful over time. Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA.