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 Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. The Five Basics of Financial Literacy How literate are you when it comes to your finances? Brush up with these five basics.