How to issue eTax invoices for your online store
What you need
- Seller Pao account with accounting module enabled
- 13-digit Thai Tax ID (เลขประจำตัวผู้เสียภาษี)
- Buyer information (name, address, tax ID)
VAT-registered online stores must issue a tax invoice for every sale. Seller Pao generates electronic tax documents compliant with Thailand Revenue Department standards, reducing the manual paperwork that comes with running an online store.
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Configure your business and VAT details
Go to Settings and select Business Information. Enter your company name or store name, registered address, 13-digit Tax ID, and branch number if applicable. If your store is VAT-registered, toggle on Enable VAT 7%. This information will appear on every tax document the system generates.
Screenshot: Configure your business and VAT details - 2
Choose your document formats
Seller Pao supports multiple Thai tax document types: full tax invoice, abbreviated tax invoice, receipt, credit note, and debit note. Go to Document Settings to choose your logo, header color, and document number format, for example INV-2026-XXXX.
Screenshot: Choose your document formats - 3
Connect orders to the accounting module
Once your sales channels are connected, paid orders flow into the accounting module automatically. Go to Accounting and select Sales Transactions. You will see all orders with their document status. Orders without a tax document issued will show a pending icon.
Screenshot: Connect orders to the accounting module - 4
Enter buyer details for a full tax invoice
Click the order you want to invoice. Click Issue Tax Document and select Full Tax Invoice. Enter the buyer's company name, registered address, 13-digit Tax ID, and branch number. This information is required by Thai law. For individual customers, use an abbreviated tax invoice instead.
Screenshot: Enter buyer details for a full tax invoice - 5
Preview and issue the document
The system shows a PDF preview before finalizing. Verify the product line items, quantities, 7% VAT amount, and total. If correct, click Issue Document. The system auto-assigns a document number, saves it to accounting records, and emails the PDF to the customer.
Screenshot: Preview and issue the document - 6
Export XML for eTax submission via iNET
For businesses that need to submit tax data in the e-Tax Invoice format via the Revenue Department's iNET system, go to Export Tax Data. Select your date range. The system generates an XML file formatted to the Revenue Department's eTax standard. Upload this file directly to iNET.
Screenshot: Export XML for eTax submission via iNET - 7
View the monthly VAT report
Go to Reports and select VAT Report. The system summarizes Output Tax (sales) and Input Tax (purchases) for each month. Export to Excel for your accountant or Revenue Department submission. This report aligns with the PP.30 form you must file every month.
Screenshot: View the monthly VAT report
Pro Tips
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Full tax invoices require the buyer's tax ID. If unavailable, use an abbreviated tax invoice. It is legally valid for individual customers.
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Enable Auto-issue on payment confirmed so no paid order is left without a document.
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Thai law requires tax documents to be retained for at least 5 years. Seller Pao stores digital copies automatically.
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If you issue a document with an error, use a credit note to cancel it. Never delete the original document from the system.