ANTEA – International Comparison 2024
Thailand: Electronic Invoicing
Antea International Comparison is a quarterly publication that provides you an overview of trends and international tax developments by comparing tax issues in different legislations around the world, that may affect those doing business in multiple locations.
Constant legislative, regulatory, and judicial changes, along with globalization, economic shifts, and operational adjustments, are challenging issues. Now more than ever, in an increasingly globalized world, companies must have a total perspective and awareness of tax issues, and this publication aims to cover key tax topics which should be of interest to businesses operating internationally.
This edition includes numerous country focus pieces, in which it is analyzed the Electronic
Invoicing across various countries. Find out more about this digital system that optimizes
the issuance and receipt of invoices, improving efficiency, reducing costs, and facilitating
tax compliance.

| Definition | A tax document generated as electronic information which can be accessed and reused in an unchanged manner and is electronically signed by using an Electronic Certificate |
| Applicable regulation | The key applicable laws are as follows: 1. The Revenue Code of Thailand 2. Electronic Transaction Act B.E.2544 |
| When compulsory? | It is an alternative for the business operators |
| Compulsory for all clients? | No. However, business operators may participate in ad-hoc campaigns issued by the government in issuing E-tax invoice and receipt for tax exemption of its clients/customers |
| How to implement it? | To implement, business operators can choose one of these options; (1) E-Tax Invoice & Receipt – Must be a VAT-registered business operator – The business operator must have an Electronic Certificate obtained from the Certification Authority – Must have a trustworthy method to generate, send, and store electronic documents – The Revenue Department must approve prior to the implementation – To file an E-tax invoice to the Revenue Department, it can be sent via 3 methods; (1) Host to Host, (2) Service Provider, (3) Web upload (2) E-Tax Invoice by Time Stamp (By Email) – Must be a VAT-registered business operator – The business operator with a revenue of less than 30 million Baht is recommended. – Only E-tax Invoices can be conducted (E-Receipt is not included) – The Revenue Department must approve prior to the implementation – Clients/customers will receive E-tax invoices via email only. – E-tax invoices will be automatically sent to the Revenue Department without further filing |
| Additional info about e-invoice | Unlike E-Tax Invoice & Receipt, E-Tax Invoice by Time Stamp does not require an Electronic Certificate as a draft E-Tax Invoice will be sent directly to the authority and it will consider and certify the same before sending back an official one directly to the clients/customers |
| Invoicing program | There is no official invoicing program for the business operators |
| Objectives | To facilitate the business operators in making tax invoices/receipts, to reduce the process of sending reports to the Revenue Department and to reduce documents to be stored by the Revenue Department |
| When IT programs adapted? | There is no official IT program, only the e-filing website of the Revenue Department is available for tax filing |
| Certified billing software | There is no certified billing software |
| QR code | QR Code is not compulsory |
| Conclusions | E-Tax Invoice & Receipt and E-tax Invoice by Email are an alternative for business operators to adopt in making tax invoice/receipt |
| Qualifications specified by the relevant laws are required to be met | |
| There is no official invoicing program, IT program or certified billing software in Thailand at the moment | |
| The implementation of E-Tax Invoice & Receipt intends to minimize the process of generating, sending, and storing paper records, for both business operators and tax authorities | |
| The main responsible authority is the Revenue Department |
Source: ANTEA – International Comparison 2024