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 Cost of Medical Care Learn about the risks of not having health insurance in this informative article. Investing for Impact Learn how to build a socially conscious investment portfolio and invest in your beliefs. From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history.