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 Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. Once Upon a Goal Do you know how to set up your financial goals for success? This knight does. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.