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 Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. The Average American Budget Learn about the average American budget in this fun and interactive piece. Diversification, Patience, and Consistency Three important factors when it comes to your financial life.