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 You May Need to Make Estimated Tax Payments If… Have income that isn’t subject to tax withholding? Or insufficient withholdings? You may have to pay estimated taxes. Retirement and Quality of Life Asking the right questions about how you can save money for retirement without sacrificing your quality of life. Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education.