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 Commitment and Money Conversations Talking about money isn’t as scary as it seems. How Much Home Can I Afford? With a few simple inputs you can estimate how much of a mortgage you may be able to obtain. Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA.