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 Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are?