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 Once Upon a Goal Do you know how to set up your financial goals for success? This knight does. From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. Strategies for Managing Student Loan Debt Five strategies for managing your student debt.