Abstract: The invention relates to an automatic cash register system which comprises a detection unit for detecting goods to be paid for, a control unit which determines an amount of money due, an input unit for supplying notes of value for payment of the determined amount of money, a sensor unit for determination of the denomination of the inserted notes of value, and an output unit for dispensing change. The control unit fixes which denominations are accepted for payment of the amount of money in dependence of at least one operating parameter, and/or fixes a maximum amount in dependence of the amount of money due, wherein the control unit controls the cash register system so that in the payment of the amount of money due only notes of value or combinations of notes of value are accepted whose value does not exceed the maximum amount.