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 Question Thank you! Oops! Related Content Saving for College 101 Here’s a crash course on saving for college. Healthcare Costs in Retirement Without a solid approach, health care expenses may add up quickly and potentially alter your spending. Your Changing Definition of Risk in Retirement A change in your mindset during retirement may drive changes to your portfolio.