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 Good Health is Good Business Good employee health can be great for the company’s bottom line. How Big is Money? Learn a little about worldwide currency in this fun infographic How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated.