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? When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? Pay Yourself First It sounds simple, but paying yourself first can really pay off.