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 Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Insurance Needs Assessment: When You're Young and Single Even if you’re young and single, you should still consider protecting yourself. Pullbacks, Corrections, and Bear Markets When the market experiences volatility, it may be a good time to review these common terms.