JPH04279997A - Sub-total discounting method - Google Patents

Abstract

PURPOSE:To count the tax more correctly without performing complicated calculation compared with the conventional method. CONSTITUTION:By using a sales data processor 1, when a tax rate is one kind, the tax rate is multiplied by the sub-total amount after discount, a tax amount is calculated, the calculated tax amount is added to the sub-total amount after the discount and the payment amount of a customer is calculated. When the tax rate is not one kind, the tax rate is multiplied by the price of the individual merchandise, the tax amount is calculated, the accumulating totals of the tax amount are added to the sub-total amount after the discount and the payment amount of the customer is calculated.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to electronic cash registers (hereinafter referred to as ECR), POS (Point-Of-Sales), which register products purchased by customers, receive payment for products from customers, and process payments. The present invention relates to a subtotal discount method for discounting the subtotal amount during payment processing in a terminal device of a point-of-sale information processing system or a sales data processing device such as an electronic scale for face-to-face sales.

0002

2. Description of the Related Art In retail stores such as supermarkets and convenience stores, discount services are provided as a membership service or as a service on sale days. Generally, there are two types of discount services: percentage discounts and fixed price discounts. Among these, a percentage discount is a discount of several percent of the total purchase price (subtotal amount) of a customer, and a fixed discount is, for example, a discount when a customer purchases a product worth 10,000 yen or more. A fixed amount is discounted from the customer's subtotal amount, such as a discount of 500 yen if the customer receives a discount. Incidentally, in Japan, a consumption tax was introduced in 1989, and some products are tax-inclusive and others are tax-exclusive. In addition, the United States and the United Kingdom have traditionally adopted the tax-exempt tax system. Therefore, when providing the above-mentioned discount service, tax processing becomes an issue.

[0003] Conventionally, for example, when giving a percentage discount, the following method has been used. (a) First, the tax amount t for each product is calculated by multiplying the price of each product by the tax rate, and the total tax amount T is calculated by summing up the tax amount t. (b) Next, based on the subtotal amount P, the discount amount S is calculated using, for example, the following formula. In addition, in formula (2), n is the discount rate. S=n×P...■ (c) Then, the final payment amount M by the customer is calculated using the following formula. M=P-S+T...■ On the other hand, in the case of a fixed amount discount, the discount amount S is not based on the above-mentioned formula (■), but is a constant amount C.

0004

[Problem to be solved by the invention] By the way, in the conventional discount method described above, the amount before discount (product price)
Because the tax is calculated by

[0005] Here, to give an extreme example, the subtotal amount is 10
If you discount a purchase of ,000 yen by 50%, the tax rate is 3%.
Then, from the formula ■ above, the amount after discount is 5,000
The customer's payment amount M is 5,300 yen, which is 300 yen plus tax (=10,000×0.03). in this case,
The 300 yen tax is equivalent to 6% of the 5,000 yen amount after discount.

[0006] However, the above-mentioned disadvantages can be solved theoretically by allocating the discount amount to each product, calculating the post-discount price of each product, and calculating tax based on the post-discount price. The problem can be solved by However, if a customer's purchased products include a mix of tax-inclusive and non-tax products, or if there are tax-inclusive products with different tax rates, the tax calculation process becomes complicated. , not practical. In the case of a percentage discount, the price of the product after the discount can be calculated relatively easily by multiplying the price of the product by the discount rate. However, in the case of fixed-price discounts, it is not clear on what basis the discount amount should be allocated to individual products, and as a practical matter, it is difficult to implement discounts.

The present invention has been made against this background, and provides a subtotal discount method that makes it possible to calculate taxes more accurately without performing complicated calculations than in the past. The purpose is to provide

[0008]

[Means for solving the problem] The invention according to claim 1 includes:
In a sales data processing device that registers products purchased by a customer, receives payment for the products from the customer, and performs payment processing, a determination means is provided to determine whether the tax rate of the product purchased by the customer is one type. If there is only one type, the tax amount is calculated by multiplying the subtotal amount after discount by the tax rate, and the calculated tax amount is added to the subtotal amount after discount to calculate the customer's payment amount. In addition, if there is more than one type of tax rate, the tax amount is calculated by multiplying the price of each individual product by the tax rate of that product, and the cumulative total of this tax amount is added to the subtotal amount after discount to calculate the customer's payment. It is characterized by calculating the amount.

[0009] The invention according to claim 2 is the invention according to claim 1, in which the sales data processing device is provided with a memory storing data such as product name, price, tax rate, etc. for each product, and a registered The product data is temporarily stored in a receipt buffer, and after the registration is completed, it is printed all together on the receipt, and the determining means determines whether the tax rate of the product stored in the receipt buffer is 1. It is characterized by determining whether it is a type or not.

[0010]Furthermore, the invention according to claim 3 is based on claim 1.
Alternatively, in the invention according to claim 2, the discount is a percentage discount in which several percent of the subtotal amount is discounted.

[0011] In addition, the invention according to claim 4 is based on claim 1.
Alternatively, in the invention according to claim 2, the discount is a fixed amount discount in which a fixed amount is discounted from the subtotal amount.

0012

[Operation] According to the invention as claimed in claim 1, when there is only one tax rate, the tax amount is calculated by multiplying the subtotal amount after discount by the tax rate, and the calculated tax amount is used as the subtotal amount after discount. calculate the customer's payment amount. In addition, if there is more than one type of tax rate, the tax amount is calculated by multiplying the price of each individual product by that product's tax rate, and the cumulative total of this tax amount is added to the subtotal amount after discounts to calculate the customer's payment amount. Calculate.

According to the invention as claimed in claim 2, in the invention as claimed in claim 1, the sales data processing device temporarily stores the data of the registered products in the receipt buffer, and after the registration is completed, the sales data processing device Print on the receipt. Further, the determining means determines whether the products stored in the receipt buffer have only one tax rate.

Furthermore, according to the invention set forth in claim 3, in the invention set forth in claim 1 or claim 2, the discount is performed by discounting several percent of the subtotal amount.

In addition, according to the invention set forth in claim 4, in the invention set forth in claim 1 or claim 2, the discount is performed by subtracting a certain amount from the subtotal amount.

[Embodiment] Before describing one embodiment of the present invention, the basic idea for solving the above-mentioned problems will be explained. The feature of the present invention is to determine whether or not products with different tax rates are mixed among the products purchased by the customer, and to discount the subtotal depending on whether or not the products are mixed. The reason is that the method of calculating taxes has changed. In addition, the present invention
This does not apply to discounts on individual items, but only on subtotal amounts. This is because if it is a discount on a single item, the tax will naturally be calculated on the amount after the discount.

[0016] For example, let us now assume that we offer a discount service of 10% of the subtotal amount. In addition, there are 3 customers A, B, and C.
If you purchase 1 product, the price of each product is 50%
If it is 0 yen, 1,000 yen, 2,000 yen, the subtotal amount P
is 3,500 yen for three products. Below, we will explain the specific calculation method when the tax rates for each product are different and when the tax rates are the same.

(1) When products A, B, and C have more than one tax rate In this case, the same discount processing as before is performed. For example, assume that the tax rate for product A is 0% (this applies to non-taxable and tax-inclusive cases, and in this case, it is also considered a type of tax), the tax rate for product B is 3%, and the tax rate for product C is 5%. (a) First, the tax t for each product is calculated by multiplying the price of each product by the tax rate, and the tax amount T is calculated by summing these. Tax on product A TA = 500 x 0.00 = 0 yen Tax on product B TB = 1,000 x 0.03 = 30 yen Tax on product C T
C = 2,000 x 0.05 = 100 yen ∴ T = tA + tB + tC = 130 yen (b) Next, calculate the discount amount S from the subtotal amount P and discount rate n (= 10%) using the above formula ■ . S=n×P=0.1×3,500=350 yen (c) Next, the subtotal amount P' after discount is calculated from the subtotal amount P and the discount amount S. P' = P - S = 3,500 - 350 = 3,150 yen (d) Then, add the subtotal amount P' after discount and the tax amount T to calculate the final payment amount M by the customer. . M=P'+T=3,150+130=3,280 yenIn the case of a fixed discount, the discount amount S mentioned above is only a fixed amount, and the other calculation methods are the same.

(2) When the tax rates for products A, B, and C are one type In the present invention, the discount is calculated by the method shown below only in this case. For example, assume that the tax rates for products A, B, and C are all 3%. (a) First, the discount amount S is calculated from the subtotal amount P and the discount rate n (=10%) using the above-mentioned formula (■). S=n×P=0.1×3,500=350 yen (b) Next, the subtotal amount P' after discount is calculated from the subtotal amount P and the discount amount S. P'=P-S=3,500-350=3,150 yen (c) Next, the tax amount T is calculated by multiplying the subtotal amount P' after discount by the tax rate. T=P'×0.03=3,150×0.03=94.5
→95 yen (rounding, etc.) (d) Then, add the subtotal amount P' after discount and the tax amount T to calculate the final amount M paid by the customer. M=P'+T=3,150+95 =3,245 yen

(2)' For reference, the above (
The conventional calculation method for case 2) is shown below. (a) First, the tax t for each product is calculated by multiplying the price of each product by the tax rate, and the tax amount T is calculated by summing these. Tax on product A TA = 500 x 0.03 = 15 yen Tax on product B TB = 1,000 x 0.03 = 30 yen Tax on product C TC = 2,000 x 0.03 = 60 yen ∴ T = tA + tB + tC = 105 yen (b) Next, the discount amount S is calculated from the subtotal amount P and the discount rate n (=10%) using the above-mentioned formula (2). S=n×P=0.1×3,500=350 yen (c) Next, the subtotal amount P' after discount is calculated from the subtotal amount P and the discount amount S. P' = P - S = 3,500 - 350 = 3,150 yen (d) Then, add the subtotal amount P' after discount and the tax amount T to calculate the final payment amount M by the customer. . M=P'+T=3,150+105 =3,255 yen

The results of the calculation method explained above are summarized as shown in FIG. As you can see from this figure,
If there is only one type of tax rate, calculation using the conventional calculation method (
In the case of (2)'), the calculation by the calculation method of the present invention ((
In case 2), the tax will be lower. This is because the tax amount T is calculated by multiplying the subtotal amount P' after discount by the tax rate.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the external configuration of a sales data processing device 1 to which a subtotal discount method according to an embodiment of the present invention is applied. In FIG. 1, a weighing pan 2 for measuring the weight of products is provided on the top surface of a sales data processing device 1, and a spirit level 3 is provided at the bottom of the weighing pan 2.
The level 3 can be visually recognized through the see-through window 2A of the weighing plate 2. Further, a receipt/journal printer storage section 4 housing a printer for printing a receipt/journal is disposed on the side of the weighing pan 2, and receipts are issued from a receipt issuing port 5. Further, on the operating side of the sales data processing device 1, there is a display section 6 for a store clerk consisting of an LCD (liquid crystal display) that displays the product name, price/discount amount, etc. of the product purchased by the customer to the store clerk, and a numeric keypad.
A key input section 7 having function keys is provided. In addition, on the front of the display section 6 for clerks, a total of 8 (5 x 16)
A touch panel section 18 with 0 touch keys is provided, and these touch keys are used as product keys for inputting product numbers and various function keys. Furthermore, an insertion slot 8 for inserting a slip (slip) for the built-in slip printer and a magnetic card reader 9 for reading a magnetic card are provided at the bottom of the operation side, and furthermore, a cash A box 10 is provided. On the other hand, on the side opposite to the operation side (customer side), a customer display section 17 (not shown) is provided, which is a plasma display that displays the product name, price/discount amount, etc. of the product purchased by the customer.

Next, FIG. 2 shows a block diagram of the electrical configuration of the sales data processing device 1. In this figure, a sales data processing device 1 includes a CPU (central processing unit) 11 that controls each part of the device, and a ROM 12 that stores a control program.
, RAM 13 where various data are stored, and receipt/receipt.
A journal printer 14, a slip printer 15,
A magnetic card reader 9, a weighing section 16 that measures the weight of the product placed on the weighing pan 2, the above-mentioned display section 6 for clerks, the display section 17 for customers, the above-mentioned key input section 7, and the above-mentioned touch panel. It is composed of a section 18.

As shown in FIG. 3, the RAM 13 includes a flag/register area 13A, a preset data area (product file) 13B for storing data corresponding to each product, and a performance data area (various performance files).
13C and a receipt buffer 13D. As shown in FIG. 4, in the preset data area 13B, the product name (in this example, pig Loin meat), unit price per unit weight (in the case of a fixed price product, price per unit quantity) (300 yen in this example), tax rate (3% excluding tax rate in this example), etc. are stored. Furthermore, as shown in FIG. 5, the performance data area 13C stores daily and cumulative performance data regarding weight (number of items) and price for each product number. Furthermore, as shown in FIG. 6, the receipt buffer 13D stores registered product data consisting of product number, product name, unit price (price), weight (number of items), amount of money, tax rate, etc. in the order of registration. This registered product data is printed all together on a receipt after registration is completed. Also, receipt buffer 13D
Although not shown in FIG. 6, there is a cumulative total area, in which the total score, which is the number of purchased products, and the cumulative total amount, P.
, cumulative tax T, and total amount M (=P+T) are stored. In the preset data area 13B and the receipt buffer 13D, the unit price is for a weighed product, and the price is for a fixed price product. Also,
Actual data area 13C and receipt buffer 13
In D, weight refers to the case of measured products, and number refers to the case of fixed price products.

In such a configuration, C when a certain customer purchases a product using this sales data processing device 1
The processing of the PU 11 and the store clerk will be explained based on the processing diagram of FIG. 7. The sales data processing device 1 is used for face-to-face sales of weighed products, and is usually placed above a showcase for displaying products. The store clerk then meets the customer face-to-face and performs the product registration process while having a conversation with the customer.

[0025] The store clerk listens to the product that the customer wishes to purchase, takes out the product from the showcase (wrapping it if necessary), stores it in the product storage bag, and then proceeds to step SP1.
Proceed to the process , where the customer inputs the product number of the product he or she wishes to purchase. That is, the store clerk presses the product key on the touch panel section 18,
Alternatively, the user inputs the product number using the numeric keypad of the key input section 7 and the [product number] key, which is one of the function keys. From this, the CPU 11 searches the product file 13B using the product number as a search key, reads product data (product name, unit price or price, tax rate, etc.) for this product number from the product file 13B, and registers each register in the flag/register area 13A. It is also stored in the receipt buffer 13D. Then, the CPU 11 displays the product name and unit price (or price) on the store clerk display section 17 and the customer display section 17. Incidentally, in the product data of the product file 13B, a flag indicating whether the product is a weighed product or a fixed price product is stored, and the CPU 11 displays the distinction of whether the product is a weighed product or a fixed price product on the display section 6 for clerks. do. Assuming that the product is to be weighed, the store clerk places the product on the weighing pan 2. As a result, the CPU 11 controls the measuring section 1.
The price of the product is calculated from the weight signal output from 6 and the unit price stored in the register. Further, after the measurement is completed, the clerk presses the function key [+] of the key input section 7. Thereby, the CPU 11 stores the product data in the receipt buffer 13D. Also, at this time, the CPU 11 updates the data in the cumulative area of the receipt buffer 13D, that is, the above-mentioned total points, cumulative amount P, cumulative tax T, and total amount M (=P+T). In addition, tax t for each product
is calculated from the price of the product and the tax rate, as shown in (1) (b) above. Then, the process advances to step SP2.

[0026] In step SP2, the store clerk confirms with the customer whether all the registration processes for the desired product have been completed. If there are still products desired to purchase, the process returns to step SP1 and the above-described product registration process is repeated. Then, when all product registrations are completed, the process advances to step SP3.

In step SP3, the clerk operates the [subtotal] key of the function keys, which means the end of registration, and then proceeds to step SP4.

In step SP4, the CPU 11 displays the cumulative amount P, cumulative tax T, and total amount M stored in the cumulative total area of the receipt buffer 13D on the clerk display section 6 and the customer display section 17, for example, as shown in FIG. After displaying as shown in 8, the process advances to step SP5.

At step SP5, the store clerk determines whether or not to offer a discount. For example, if a 5% subtotal discount is to be given to a member of this store, this determination is made by asking the customer whether he or she is a member (whether or not he or she has a membership card). And if the customer is a member, i.e.
If a discount is to be given, the process advances to step SP6.

[0030] In step SP6, the store clerk performs an operation for discounting. For example, the numeric keypad [5] of the key input section 7
and operate the [Discount] key, which is one of the function keys. Note that steps SP5 and SP6 mentioned above
The processing may be caused to be performed by the CPU 11. For example, a store clerk may have the magnetic card reader 9 read the information stored on the membership card, or a flat-rate discount may be used, such as a discount of 200 yen if the total subtotal amount is 5,000 yen or more. For example, in cases where it is possible to judge whether or not to give a discount based on the subtotal amount. Then, the process advances to step SP7.

In step SP7, the CPU 11 checks the tax rates stored in the receipt buffer 13D and determines whether each product has one tax rate. If the result of this determination is "NO", that is, if each product has more than one tax rate, the process advances to step SP8.

In step SP8, the CPU 11 calculates the discount amount S using the calculation method (1) (b) described above. For example, with a percentage discount, the subtotal amount P is 1,50
When the discount rate n is 0 yen and the discount rate n is 5%, the discount amount S is 75 yen, as shown by the following formula. Then, the CPU 11 displays the information on the store clerk display section 6 and the customer display section 17, and then proceeds to step SP9. S = 1,500 x 0.05 = 75 yen

[0033] In step SP9, the CPU 11 calculates the subtotal amount P' after the discount using the calculation method of (1) (c) described above, displays it on the clerk display section 6 and the customer display section 17, and then calculates the subtotal amount P' after discount. , proceed to step SP10.

[0034] In step SP10, the CPU 11 calculates the final payment amount M by the customer using the above-described calculation method (1) and (d), displays it on the clerk display section 6 and the customer display section 17, and then calculates the final payment amount M by the customer. , proceed to step SP15.

On the other hand, the judgment result in step SP7 is "YE".
In the case of "S", that is, in the case where each product has one type of tax rate, the process advances to step SP11.

[0036] In step SP11, the CPU 11 calculates the discount amount S using the above-mentioned calculation method (2) (a), displays it on the clerk display section 6 and the customer display section 17, and then proceeds to step SP12. .

In step SP12, the CPU 11 calculates the subtotal amount P' after the discount using the calculation method of (2) (b) described above, and displays the result in the clerk display section 6 and the customer display section 17.
After displaying the screen, the process advances to step SP13.

In step SP13, the tax amount T is calculated by the calculation method of (2) and (c) described above, and after displaying it on the clerk display section 6 and the customer display section 17, step S
Proceed to P14.

In step SP14, the CPU 11 calculates the final payment amount M by the customer using the above-described calculation method (2) and (d), displays it on the clerk display section 6 and the customer display section 17, and then calculates the final payment amount M by the customer. , proceed to step SP15.

[0040] Also, the judgment result in step SP5 is "NO".
'', that is, when no discount is given, step SP
Proceed to step 15.

In step SP15, the CPU 11 prints the receipt shown in FIG. That is, the receipt/journal printer 14 is driven to print product data (see part a in FIG. 9), purchase amount, and subtotal discount amount (see part b in FIG. 9).However, if no discount is given, the information will not be printed. )
, subtotal, tax cumulative total, and total are printed on receipt paper. At this time, the CPU 11 updates the data in the performance data area 13C. The CPU 11 then performs step SP
Proceed to step 16.

[0042] In step SP16, the clerk performs payment processing. That is, when the customer looks at the total amount displayed on the customer display section 17 and hands the banknotes etc. to the clerk, the clerk hands over the product, receipt and change to the customer, and then completes the series of operations.

[0043] The purpose of the present invention is to decide what to do with the tax (excluding tax) received from the customer when subtotal discount processing is performed, and the problem is how to calculate the tax on the store side. Therefore, we omit the explanation of tax calculation in case of tax included. This is because the included tax does not directly affect the customer's payment amount.

Furthermore, in the embodiment described above, the product data is not printed on the receipt paper during the registration process, but is printed all at once after the registration process is completed. Therefore, when calculating discounts, the tax rate is 1
I am trying to determine whether it is a type or not. however,
Instead of storing the product data in the receipt buffer 13D, the product data may be printed on the receipt paper during the registration process. However, in this case as well, the data in the cumulative area of the receipt buffer 13D, that is, the total number of points, the cumulative amount P, the cumulative tax T, and the total amount M are stored, and the tax rate is set by 1 each time a product is registered during the registration process. Try to judge whether it is a type or not. This determination may be made, for example, by storing the tax rate of the first registered product, and thereafter determining whether the tax rate of the registered product is the same as the stored tax rate.

Furthermore, in the embodiment described above, an example was shown in which each cumulative data was calculated during the product registration process, but
Each cumulative data may be calculated when the clerk operates the [subtotal] key of the function keys.

In addition, in the embodiment described above, the tax rate and tax for each product are not displayed or printed during the registration process or in the product data field of the receipt, but even if they are displayed and printed, good.

Furthermore, in the embodiment described above, an example was shown in which the present invention was applied to a so-called stand-alone type sales data processing device that is used alone. The present invention may be applied to a case where a system is configured and processing is performed using a product file and a performance file of a controller or a parent device.

[0048]

[Effects of the Invention] As explained above, according to the present invention,
It has the following effects. (b) If the product purchased by the customer has one tax rate,
Taxes are calculated based on the subtotal amount after discounts, so taxes can be calculated accurately. (b) Calculations are less complicated than before. (c) If the product purchased by the customer has two or more tax rates, the method is the same as the conventional method, and although the present invention cannot completely solve the conventional drawbacks, in the case of current Japan, There are only two tax rates: inclusive tax and exclusive tax (3%), and at supermarkets, convenience stores, etc., most products are tax exclusive except for special products. Therefore, in these stores, there are many opportunities for processing with only one tax rate. Therefore, it is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external configuration of a sales data processing device 1 to which a subtotal discount method according to an embodiment of the present invention is applied.

FIG. 2 is a block diagram showing the electrical configuration of a sales data processing device 1 to which a subtotal discount method according to an embodiment of the present invention is applied.

FIG. 3 is a diagram showing an example of the configuration of the RAM 13.

FIG. 4 is a diagram showing an example of the configuration of a preset data area 13B.

FIG. 5 is a diagram showing an example of the configuration of a performance data area 13C.

FIG. 6 is a diagram showing an example of the configuration of a receipt buffer 13D.

FIG. 7 is a processing diagram showing the processing of the CPU 11 and the store clerk when a certain customer purchases a product in the sales data processing device 1.

FIG. 8 is a diagram illustrating an example of a display on a store clerk display section 6 and a customer display section 17.

FIG. 9 is a diagram showing an example of printing on a receipt.

FIG. 10 is a diagram showing an example of calculation results by the present invention and the conventional subtotal discount method.

[Explanation of symbols]

1 Sales data processing device 11 CPU 12 ROM 13 RAM 13C Performance data area 13D Receipt buffer

Claims (4)

[Claims] [Claim 1] In a sales data processing device that registers products purchased by a customer, receives payment for the products from the customer, and performs settlement processing, a determination means for determining whether the tax rate of the product purchased by the customer is one type or not. If there is only one tax rate, the tax amount is calculated by multiplying the subtotal amount after discount by the tax rate, and the calculated tax amount is added to the subtotal amount after discount. Calculate the payment amount and if the tax rate is 1
If not, the tax amount is calculated by multiplying the price of each individual product by the tax rate of that product, and the cumulative total of this tax amount is added to the subtotal amount after discount to calculate the customer's payment amount. Features subtotal discount method. 2. The sales data processing device includes a memory that stores data such as product name, price, tax rate, etc. for each product, temporarily stores the data of the registered product in a receipt buffer, and then stores the data of the registered product in a receipt buffer, and then stores the data of the registered product in a receipt buffer. , and is configured to be printed on the receipt all at once, and the determining means determines whether or not the tax rate of the products stored in the receipt buffer is one type. Subtotal discount method. 3. The subtotal discount method according to claim 1, wherein the discount is a percentage discount in which several percent of the subtotal amount is discounted. 4. Claim 1, wherein the discount is a fixed amount discount that discounts a certain amount from the subtotal amount.
Or the subtotal discount method according to claim 2.