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 Managing Money as a Couple Keys to preparing to grow wealthy together. The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.