The embodiment of the invention provides an image forming method, an image forming apparatus and an image forming system. The image forming apparatus includes a first storage unit for respectively storing a type-specified print task and/or a type-specified print task of a user information in correspondence with the charging target information; a communication section for receiving a print task; aprinting section for printing the received print task; and a control unit which controls the printing section to print the received print task when the received print task is the type-specified printtask in the first storage unit and/or when the user information of the received print task is the user information of the type-specified print task in the first storage unit, and executes the chargingin accordance with the corresponding charging target information stored. According to the embodiment of the image forming method, the image forming apparatus, and the image forming system, the user operation can be simplified, great convenience is brought to the user, and the printing efficiency is improved with respect to the type-specified print tasks requiring fee charging.