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 A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? The Five Basics of Financial Literacy How literate are you when it comes to your finances? Brush up with these five basics.