A cost management system includes one or more computers. At least one computer includes an obtainment part configured to obtain usage information of a device; a first storage part configured to store identification information having the usage information associated therewith; a determination part configured to determine a billing destination associated with a cost relating to the usage information based on the identification information having the usage information associated therewith, stored in the first storage part; a generation part configured to generate billing information associated with the cost to the billing destination; and an output part configured to output the billing information.
