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 Questions to Consider When Buying a Vacation Home Doing your research is key before buying a vacation home. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Prevent a Rift: Money Tips for Newlyweds Couples may be able to head off many of the problems in a marriage that money can cause.