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 Economic Journey of Your Morning Coffee Few contemplate the complex journey that brought their coffee from farm to kitchen table. What is a Carrier? Do you know what a Carrier is? Rental Car Insurance: To Buy or Not to Buy Before you buy insurance for your car rental, make sure you know what it covers. Find out the pieces of a car rental policy, and whether your regular auto coverages already have it.