Provided is a POS system, including a terminal (12) that includes a bank deposit amount calculating unit (122) for calculating a bank deposit amount for each business day, in which the bank deposit amount calculating unit (122) subtracts an amount spent for other uses than as a change from a total amount of cash gained on a day that validity of the spending is judged and approved, to thereby calculate a bank deposit amount of the day. With this configuration, the management of cash such as a change fund in the POS system is clarified.