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 Retirement Income and the Traditional Portfolio Experiencing negative returns early in retirement can potentially undermine the sustainability of your assets. Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return.