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 Message Thank you! Oops! Related Content The Power of Compound Interest Learn how to harness the power of compound interest for your investments. What Smart Investors Know Savvy investors take the time to separate emotion from fact. Insurance Needs Assessment: When You're Young and Single Even if you’re young and single, you should still consider protecting yourself.