A printing system includes a company server and a printing apparatus. The printing apparatus is used in business-use printing and private-use printing. The printing apparatus includes: a printing section performing printing on a medium by using a printing agent; and a waste agent collecting section collecting as a waste agent, the portion of the printing agent that is consumed by the printing section but is discarded without being used in printing on the medium. The printing system includes a determination section and an estimation section. The determination section determines whether the printing agent as the waste agent is discarded in business-use printing or private-use printing. The estimation section estimates an amount of printing agent determined by the determination section to be discarded in business-use printing.