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 The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer. Your Changing Definition of Risk in Retirement A change in your mindset during retirement may drive changes to your portfolio. Lifetime of Earnings Estimate how much you have the potential to earn during your working years.