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 Strategies for Managing Student Loan Debt Five strategies for managing your student debt. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. Teen Drinking and Your Liability Drinking may be a “rite of passage” for teens, but when it occurs in your home you may be held responsible for their actions.