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? Life and Death of a Twenty Dollar Bill How long does a $20 bill last? When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits.