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 Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement. Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible.