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 Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? Earnings for All Seasons Earnings season can move markets. What is it and why is it important? What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.