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 Bull & Bear Markets: A Timeline This helpful infographic will define bull and bear markets, as well as give a historical overview. The Wild West of Data Theft Learn about cyber liability insurance in this entertaining video. Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return.