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 Question Thank you! Oops! Related Content Emotional vs. Strategic Decisions Information vs. instinct. Are your choices based on evidence of emotion? How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy.