An information processing apparatus which is capable of reducing a burden on both an administrator and users when a job accounting system is introduced, to thereby enable efficient execution of job management. A client computer 1010 has a printer driver 1015 installed therein for generating an output job to be output to a peripheral apparatus, and delivers the output job to the peripheral apparatus via a first port monitor 1017 preset to a port as the output destination of the printer driver 1015. A second port monitor 1016 receives the output job generated by the printer driver 1015 and delivers the output job to the peripheral apparatus and collects job information on the output job. The port as the output destination of the device driver is switched from the port monitored by the first port monitor 1017 to a port monitored by the second port monitor 1016 when a system in which the job information is acquired using the second port monitor is constructed.