Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. 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 The Average American Budget Learn about the average American budget in this fun and interactive piece. What Is My Risk Tolerance? This questionnaire will help determine your tolerance for investment risk. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective.