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 Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Investing for Impact Learn how to build a socially conscious investment portfolio and invest in your beliefs. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government.