Sales data processor, tax exchanging price display method and program

摘要

Problem to be solved: to provide a sales data processing apparatus, an operation method of the sales data processing apparatus, and a program capable of applying an appropriate tax rate to a predetermined item without changing the tax input price for a predetermined product.Electronic cash registerFor goods with a specified reference priceSetting means for setting multiple consumption tax rates that can be switched according to the sales mode andFor each consumption tax rateThe derivation means that derives tax exchanging price that the tax price when the consumption tax rate is applied coincides with the reference priceWhen the registered item is registered in response to the specified sales mode, theThe tax exchanging price pertaining to the predetermined sales mode derived by the derivation means is displayed on the display part (operator's display section)A CPU as a display control means to be displayed on a display display part;.Diagram