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 Gap Insurance for Leased Cars If you’re thinking of leasing a new car, then you shouldn’t forget about gap insurance. How Big is Money? Learn a little about worldwide currency in this fun infographic Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education.