A bill of exchange is a written order from a party (drawer) directing another party (drawee) to pay a specified sum of money. It must contain an unconditional order to pay a definite amount, be addressed to a specific party, and have a clear date. There are typically three parties to a bill of exchange: the drawer, drawee/acceptor, and payee. A promissory note is a written promise by a party (maker) to pay a specified sum of money. It contains an unconditional promise to pay a definite amount and has two parties: the maker and payee. Key differences are that a bill of exchange contains an order to pay, while a promissory note contains