How to Use eTax – INET for Marketplace

Electronic Tax Invoice (e-Tax invoice)

An electronic tax invoice is a digital version of the traditional paper tax invoice, developed by the Revenue Department to reduce costs and enhance the capabilities of Thai entrepreneurs.

In the ZORT system, electronic tax invoices (e-Tax invoices) can only be issued for sales and return transactions. The documents that can be issued include:

T03 = Receipt/Tax Invoice

T05 = Abbreviated Tax Invoice

388 = Tax Invoice

80 = Debit Note and 81 = Credit Note

Conditions for Orders from Marketplace

For orders from marketplace, the conditions for issuing documents are as follows:

T03 = Receipt/Tax Invoice	388 = Tax Invoice	T05 = Abbreviated Tax Invoice
Sales transactions must include tax.
Data sent to INET will be in CSV format, using the INET document form.
Manual Data Submission: Sent when payment is paid and the status is completed.	Manual Data Submission: Sent when the status is completed only.	Manual Data Submission: Sent when payment is paid only.
Auto Data Submission: Sent when payment is paid and the status is completed, with the Tag: TaxInvoice.	Auto Data Submission: Sent when the status is completed, with the Tag: TaxInvoice.	Auto Data Submission: Sent when the payment is paid.
Customer information must be complete: Customer Name, Address, Tax ID, Branch Name, and Branch Code (Phone number and email are optional).		Orders with missing or incomplete customer information
The document number will be auto-generated by ZORT, not using the original orders number.
The data sent to INET can include tax or separate tax details, depending on how the sales transaction was recorded.
If set to daily submission, data will be automatically sent at 1:00 AM the following day.
If set to hourly submission, data will be automatically sent at the beginning of the next hour.

Marketplace Orders (T03 = Receipt/Tax Invoice)

Key Conditions

1. The Orders must include tax, either as an inclusive or separate amount.

2. Complete customer information must be provided, including customer name, address, tax ID, branch name, and branch code (phone number and email are optional).

3. Stores must be tagged with “Tax invoice”.

How to Add a Tag to a Sales Transaction

A. Open the Orders and click the “More” button.

B. Select “Add Tag”.

C. Enter the tag as “Taxinvoice”.

D. Click “Save”.

4. Orders status must be “Completed” and “Paid”.

5. To send the electronic tax invoice immediately, click the “eTax Invoice Service” button.

6. Select “Receipt/Tax Invoice”. The system will send the data to issue the eTax document immediately (if not sent manually, the system will automatically send the data according to the set schedule).

7. Once the data is sent, the merchant can view the attached document or the electronic tax invoice under the “Documents” section at the top of the orders details.

Example of Order

Example of Comparing marketplace data in ZORT and E-Tax

Blue: Shipping Cost (charged to the customer)
Yellow: Total Net Amount or Net Sales
Purple: Store Discount
Orange: Platform Discount (e.g. voucher used by the customer at checkout)
Red: Net Amount Received by Store (Excluding Fees)

2. Creating a Sales Transaction (388 = Tax Invoice)

Key Conditions:

1. The Orders must include tax, either as an inclusive or separate amount.

2. Complete customer information must be provided, including customer name, address, tax ID, branch name, and branch code (phone number and email are optional).

3. The orders must be tagged with “Tax invoice”.

4. The orders status must be “Completed”.

5. To send the electronic tax invoice immediately, click the “eTax Invoice Service” button.

6. Select “Tax Invoice”. The system will send the data to issue the eTax document immediately (if not sent manually, the system will automatically send the data according to the set schedule).

7. Once the data is sent, the merchant can view the attached document or the electronic tax invoice under the “Documents” section at the top of the orders details.

Example of Order

Example of Document (388 = Tax Invoice)

Red: ZORT Order Number
Green: Item Description
Orange: End-of-Bill Discount
Blue: Shipping Cost (charged to the customer)
Yellow: Total Net Amount or Net Sales

A. Adjusting Sales Transaction Data:

1. Non-Financial Adjustments (e.g., Customer Info):

Stores can edit the order and resubmit. The system will issue a replacement document referencing the original.

Example

A: New Document Number

B: Customer Name (Edited)

C: Original Document Number

D: Remarks

2. Financial Adjustments (e.g., Product Price):

Example 1:

Adjusting Discount from 1,000 THB to 1,500 THB.
Reducing the total net amount from 17,100 THB to 16,600 THB.

If the net amount decreases, the system will issue an 81 = Credit Note.

Example of Credit Note (81)

From the image, the details are as follows:

A: New document number
B: Original document number
C: Remarks on the credit note document

Example 2: When modifying a sales order to change a product and increase the product price, the system will generate document 81 (Debit Note).

Editing the product price from 18,000 THB to 19,000 THB.
Increasing the total net amount from 16,000 THB to 17,600 THB.

If the net amount increases, the system will issue an 80 = Debit Note.

Example of Debit Note (80)

From the image, the details are as follows:

A: New document number
B: Original document number
C: Remarks on the credit note document

B. Cancelling an Orders After eTax Submission

After submitting the sales transaction to eTax, if it is later canceled, the system will issue a credit note (81) according to the scheduled data submission or manually via “eTax Invoice Service” > “Credit Note”.

Example of Orders Cancellation

Example of Credit Note Document

From the image, the details are as follows:

A: New document number
B: Original document number
C: Remarks on the credit note document

C. Creating a Return or Credit Note (81) from an Original Orders:

If the return transaction equals or is less than the original sales transaction, the system will issue a credit note (81).

Example an Order

Example the details of Return Order

Example of Credit Note (81)

From the image, the details are as follows:

A: New document number
B: Original document number
C: Remarks on the credit note document

3. Orders from Marketplace (T05 = Abbreviated Tax Invoice)

Key Conditions

1. The Orders must include tax, either as an inclusive or separate amount.

2. Orders without or incomplete customer information.

3. The Orders status must be “Paid”.

4. To send the electronic tax invoice immediately, click the “eTax Invoice Service” button and select “Tax Invoice”. The system will send the data to issue the eTax document immediately (if not sent manually, the system will automatically send the data according to the set schedule).

5. Once the data is sent, the merchant can view the attached document or the electronic tax invoice under the “Documents” section at the top of the orders details.

Example of Order

Example of Document (T05 = Abbreviated Tax Invoice)

Green: Item Description
Yellow: Total Net Amount or Net Sales
Orange: Platform Discount (e.g. voucher used by customer at checkout)
Red: Net Amount Received by Stores

Example of the process for issuing various documents when editing a sales order, processing a product return, or canceling an order after a T05 (Abbreviated Tax Invoice) has already been issued.

A. In Case The Orders Data is Modified:

1. Case of modifying data without affecting the net amount, such as customer information:

For orders where an Abbreviated Tax Invoice (T05) has already been issued, customer information cannot be edited on ZORT. The seller must instruct the buyer to fill out the information through Taxbox or refer to the steps in the guide “How to Issue a T03 Document After Issuing a T05.”

2. Case of modifying data that affects the net amount, such as product prices:

Example 1: Adjusting a discount

The discount was changed from 1,000 THB to 1,500 THB.
The total net amount decreased from 17,000 THB to 16,500 THB.

After completing the data modification, if you wish to issue a “Credit Note,” the system will always require you to first issue a “Tax Invoice (388).

Example of Tax Invoice (388)

From the image, the details are as follows:

A: New document number
B: Original document number
C: Remarks on the credit note document

If the net amount decrease, the system will generate document 81 = Credit Note

Example of Credit Note (81)

Example 2 Modifying a Sales Order by Changing the Product and Increasing the Product Price

Adjustment Example

The product price is changed from 18,000 THB to 19,000 THB.
The total net amount changes from 16,500 THB to 17,500 THB.

If the net amount increases, the system will generate document 80, which is the “Debit Note.” If a Tax Invoice (388) has already been issued for this sales order, you can proceed to issue the Debit Note directly.

Example of a Debit Note (80)

From the image, the details are as follows:

A: New document number

B: Original document number

C: Remarks on the debit note document

B. Case of Canceling an Order After Data Has Been Sent to E-Tax

If the sales order data has been sent to E-Tax and the order is later canceled in ZORT, the system will generate a Tax Invoice (388) followed by a Credit Note (81) according to the configured data submission schedule. Alternatively, you can manually send it via Settings >> E-Tax Invoice Service >> Tax Invoice and Credit Note.

Example of a Tax Invoice Document in Case of Order Cancellation

From the image, the details are as follows:

A: New document number

B: Original document number

C: Notes on the tax invoice document

Example of a Credit Note Document in Case of Order Cancellation

From the image, the details are as follows:

A: New document number

B: Original document number

C: Notes on the credit note document

C. Case of Creating a Return Order or Credit Note (81) from an Original Order

If the seller creates a return order from an original sales order, and the net amount of the return is equal to or less than the original sale, the system will generate a Tax Invoice (388), referencing the Abbreviated Tax Invoice (T05), and subsequently issue a Credit Note (81).

Example of Order Details