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 What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money. Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors. Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill.