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 Where Is the Market Headed? We all know the stock market can be unpredictable. We all want to know, “What’s next for the financial markets?” Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. The Pre-Retirement Checklist This checklist can give you a quick snapshot of how prepared you are.