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 Pay Yourself First It sounds simple, but paying yourself first can really pay off. Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic.