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 What You Should Do About Insurance Following a Divorce In the face of divorce, making changes to insurance coverage may be overlooked. The Three Keys to a Great Password Have fun and learn how to craft the perfect password with the help of this highly engaging infographic. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding.