An image forming apparatus including: a stapling device which applies staple processing to a portion assuming a trailing end of a sheet with respect to a transport direction of the sheet; a first punch device which applies punch processing to a portion assuming a leading end of the sheet in the transport direction of the sheet; and a second punch device which applies the punch processing to the portion assuming the trailing end of the sheet in the transport direction of the sheet, in which a setting of both a staple mode for performing the staple processing by the stapling device and a first punch mode for performing the punch processing by the first punch device is inhibited, and a setting of both the staple mode and a second punch mode for performing the punch processing by the second punch device is allowed.