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 Managing Money as a Couple Keys to preparing to grow wealthy together. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors.