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 Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return. Why do Renters Have to Save More? How much more would retirement cost if you owned your home rather than rented? It could actually be several times less. Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles.