To provide a sales management device or the like capable of automatically executing a rebate settlement process.SOLUTION: This sales management device for automatically executing a rebate settlement process can access sales data generated at the time of selling of a commodity and a rebate condition master which is information regarding a rebate generation condition. The sale data contains information in which a
client, a commodity selling date, and a commodity sales amount are associated. The rebate condition master contains information in which the
client, a ratio of a wholesale price to a retail price for calculating a rebate amount returned as a rebate, a deadline of a period for calculating the rebate money, a unit of a period for rebate settlement, a settlement month scheduled from the deadline, and a settlement day of the settlement month are associated. A
control unit calculates the rebate amount corresponding to the
client, a date of a deadline of the rebate amount, and a day for paying the rebate amount on the basis of the sales data and the rebate condition master, and generates the calculation result as rebate data.SELECTED DRAWING: Figure 6