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. Related Content What is the Value of Your Business? Ascertaining the value of your business is important for a variety of reasons. The Value of Insuring Against Life’s Risks Building wealth requires protection from the forces of wealth destruction. Assess Life Insurance Needs How to help determine life insurance needs to provide for your family after you pass away.