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 What It Takes to Become an Accredited Investor What does it take to be an accredited investor? Explore the details, & the types of investments offered to those who qualify. White Elephant Inheritance This article deals with how one might deal with a burdensome inheritance. 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.