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 Retirement Questions That Have Nothing to Do With Money Things to consider before retirement. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more.