The present invention is to provide a device administration system that prevents discrepancies in the use status information stored in the administration system when administrative units, such as users and/or departments, are excluded as subjects of administration, as well as an administration information change program to change the administration information in such administration system, a charge information processing program and a charge information processing method. This object is attained by providing a device administration system comprising: a device; an administration device that administers usage status information of the device for each administrative unit that is a user and/or a organization; and an administration information change device that changes the administrative unit; wherein in a case where the administration information change device excludes one of the administrative unit, the administration information change device makes changes so that the usage status information related to the administrative unit excluded by the administration information change device is not deleted from the administration device and is treated as a usage status information related to a different administrative unit.