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 Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. What's So Great About a Rollover? Making a career move requires tough decisions, not the least of which is what to do with the funds in your retirement plan.