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 U.S. Personal Savings Rate What can be learned from the savings rate? My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next.