To provide a billing management system capable of managing billing conditions corresponding to users in a lump.

A billing management system 1 includes: an image formation device 26 for forming an image; a reading device 22 for reading identification information from an information recording medium 28 that records identification information for identifying users of the image formation device 26; a management device 12 for managing the identification information and billing conditions in association with each other; and a billing information transmission device 24 for referring to the identification information and billing conditions managed by the management device 12 and transmitting billing information according to a billing condition corresponding to the identification information that is read by the reading device 22.