The invention relates to a method for predicting consumption of supply material for a plurality of print jobs in a printing system, each print job intended to consume supply material from at least one supply material container from a plurality of supply material containers in the printing system, the method comprising the steps of scheduling the plurality of print jobs in time, scheduling maintenance actions in time, for each supply material container establishing a supply material level in the supply material container before printing the plurality of print jobs, for each supply material container calculating a job consumption of supply material from the supply material container for each scheduled print job, for each supply material container calculating a maintenance consumption of supply material from the supply material container for each scheduled maintenance action, and for each supply material container calculating at which print job the supply material level of the supply material container reaches a zero supply material level in the supply material container taking into account the calculated job consumption of the supply material in the supply material container and taking into account the calculated maintenance consumption of the supply material in the supply material container. The invention also relates to a print system suitable for applying the method.