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 Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. Keep Your Umbrella Handy Umbrella liability can be a fairly inexpensive way to help shelter current assets and future income from the unexpected. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.