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 Question Thank you! Oops! Related Content AI Tools Changing Retiree Entrepreneurship The impact that Artificial Intelligence (AI) tools can have on retirees with a consulting or small business venture. The Value of Insuring Against Life’s Risks Building wealth requires protection from the forces of wealth destruction. How the Federal Reserve Works Each day, the Fed is behind the scenes supporting the economy and providing services to the U.S. financial system.