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A bill of exchange is a privately signed document of credit that links three people in the process of its creation: the drawer, the drawee and the beneficiary.

The instrument is created by the drawer as a creditor who instructs his debtor, called the drawee, to pay a fixed amount on a specified date in time, either to a beneficiary or at the latter's order.

Promissory note

A promissory note is a privately signed debt instrument which, in the process of its creation, links two persons: the subscriber or issuer and the beneficiary.

The security is created by the underwriter or issuer as a debtor, who undertakes to pay a fixed sum of money at a certain time or on presentation to another person, called the beneficiary, who is a creditor.