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 How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated. Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill. The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer.