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 The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route. Will Power Preparing for the eventual distribution of your assets may not sound enticing. But a will puts the power in your hands. Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill.