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 What is the Value of Your Business? Ascertaining the value of your business is important for a variety of reasons. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? Insurance Needs Assessment: When You're Newly Married Marriage changes everything, including your insurance needs.