Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. 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 New Retirement Contribution Limits for 2025 A look at the new, record-high retirement contribution limits from the IRS. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. Bull and Bear Go To Market Learn about the difference between bulls and bears—markets, that is!