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 Timing Your Retirement This short video illustrates the importance of understanding sequence of returns risk. Should You Invest in Exchange Traded Funds? There are thousands of ETFs available. Should you invest in them? Once Upon a Goal Do you know how to set up your financial goals for success? This knight does.