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 Should You Ever Retire? A growing number of Americans are pushing back the age at which they plan to retire. Or deciding not to retire at all. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated.