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 Emotional vs. Strategic Decisions Information vs. instinct. Are your choices based on evidence of emotion? Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill.