Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. 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 Paying Off a Credit Card Enter various payment options and determine how long it may take to pay off a credit card. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. What Is My Current Net Worth? Use this calculator to estimate your net worth by adding up your assets and subtracting your liabilities.