A credit line is an authorization (drawing right) data by a bank with a borrower (a little as for a Crédit revolving) to draw from the funds in the form of sections of Prêt S up to a ceiling fixed for a given period. It can also include a Credit line making it possible to return the account running debtor in some limiting.

A company can possibly profit from a line of appropriations of exploitation and from a line of loans investment. These lines are often negotiated annually between the company and its bank.

The line is sometimes multidevises (see Crédit in currencies).