A job accounting and chargeback system for software products is comprised of a software license manager in the form of a software product use monitoring subsystem that handles requests for and grants rights to use software products, in such a manner that chargeback data is developed, which is then referenced to entities that are charged for the use of the software products. To better correlate the chargeback data with the use of software products, the chargeback data is referenced to the actual amount and type of use of software products being used, rather than on the use of computer facilities.