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 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan. It May Be Time for a Financial Checkup It’s never a bad time to speak with your financial professional about changes in your situation. Understanding the Alternate Valuation Date Executors can value the estate on the date of death, or on its six-month anniversary —the “Alternate Valuation Date."