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 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. 8 Financial Milestone Birthdays Get ready to celebrate your financial birthdays in this informative infographic. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications.