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 The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. Disability Income This calculator estimates your chances of becoming disabled and your potential need for disability insurance. A Primer on Dividends A company's profits can be reinvested or paid out to the company’s shareholders as “dividends."