To provide a copy system and a charging method having proper charge collection capable of coping with new service, to enable a user to properly judge service used by equipment, to determine a charging object according to the service contents and capable of maintaining fairness in the aspect of payment.

Charging methods are selectively switched by service/functions used by a user (service user) who actually operates a copying machine by a use frequency detecting means 122 that detects use quantity of the respective kinds of service such as kinds of service, a charging destination and a charging unit price, the charging destination is set as a provider, the actual user, an equipment installer, etc., and service use bills 130 to 132 are issued to each of them.