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 A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. Potential Income from an IRA Estimate your monthly and annual income from various IRA types. The Richest Man in Babylon In good times and bad, consistently saving a percentage of your income is a sound financial practice.