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 Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. Separating the Signal From the Noise A good professional provides important guidance and insight through the years. Understanding Extended Care Understanding the types of extended care services—and what those services could cost—may be critical.