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 Question Thank you! Oops! Related Content The Business Cycle How will you weather the ups and downs of the business cycle? Disability Income This calculator estimates your chances of becoming disabled and your potential need for disability insurance. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers.