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Thailand e-invoicing e-Tax and Invoice Receipt update

New incentives to adopt E-Tax System

Thailand’s Revenue Authority has approved a number of incentives for taxpayers to fully adopt the E-Tax System, which provides for digital reporting of invoices and withholding tax payments. Incentives include:

  • Additional deduction allowances for costs reporting in the system
  • Lowered withholding tax rates when transactions are reporting on E-Tax

Compulsory reporting to government if e-invoices adopted

Thailand now requires taxpayers to submit electronic invoices to the government. The use of e-invoices is not compulsory; but since 2017 when adopted by any taxpayer, they must be submitted with the e-Tax and Invoice Receipt regime. Invoices are submitted in batch format by the 15th of the month following their issuance.

Our international live VAT invoice transaction and e-invoice tracker on real-time transaction-based tax reporting lists all the countries imposing transaction-based reporting.

Digital signature requirements

Prior to submission to the authorities, taxpayers must mark their invoices with a unique digital signature and number. This includes two digital signatures created by the prescribed means and supported by a certificate and the signatory’s certificate number

This is done with special hardware issued to the taxpayer, or a USB token.

Invoices may be in XML format. It also includes the requirements to report debit notes, credit notes and receipts.

How to submit Thai e-invoices

Invoices are submitted in batch mode. They are due by the 15th of the month to the Electronic Transactions Development Agency (ETDA) following their issuance. They are submitted in any of the following ways:

  1. For small taxpayers, via email in PDF format (separate ‘e-Tax Invoice by email’ regime). This is only available to businesses with a turnover below THB 30million. It also excludes the requirement to submit receipts.
  2. Web portal upload of XML file
  3. Via appointed e-invoicing agent since 2020
  4. Direct to the tax office with electronic link between ERP and ETDA

Asia Pacific e-invoicing


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