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 Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices. 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too.