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 Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more. Jane Bond: Infiltrating the Market Agent Jane Bond is on the case, cracking the code on bonds. The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does.