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 Power of Compound Interest Learn how to harness the power of compound interest for your investments. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. Preparing for the Expected You can plan ahead to protect yourself and your family against the financial consequences of deteriorating health.