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 IRA Withdrawals that Escape the 10% Tax Penalty The list of IRA withdrawals that may be taken without incurring a 10% early penalty has grown. Creative Ways to Motivate Your Employees Five creative (and inexpensive) ideas for motivating your employees. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits.