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. Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers. 7 Questions to Consider in Retirement Explore these must-ask questions for pursuing and living out your dream retirement.