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 Question Thank you! Oops! Related Content Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. What Smart Investors Know Savvy investors take the time to separate emotion from fact.