A method of charging for use of a facsimile apparatus, using an information processing unit provided therein, is disclosed that includes the steps of (a) the information processing unit obtaining the amount of facsimile transmission; (b) the information processing unit obtaining a transmission condition specified by a user; and (c) the information processing unit calculating a charge for the facsimile transmission using the amount of facsimile transmission and a charge corresponding to the transmission condition. The information processing unit stores data on the charge corresponding to the transmission condition for the facsimile transmission.