• A bill of exchange is a financial instrument containing a written promise by one party (the issuer or drawer) to pay the other party (the drawee) a certain amount of money, either on demand or at a certain date in the future.

  • A promissory note usually contains all the terms relating to the debt, such as principal, interest rate, maturity, date and place of issue, and the signature of the issuer.
  • In terms of legal force, promissory notes are somewhere between the informality of an IOU and the rigidity of a loan agreement.