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 Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters. Retirement and Quality of Life Asking the right questions about how you can save money for retirement without sacrificing your quality of life. Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k).