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 Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. The Economic Journey of Your Morning Coffee Few contemplate the complex journey that brought their coffee from farm to kitchen table.