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 Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers.