Is e-Invoicing mandatory in Thailand?

e-Invoicing is currently voluntary for B2B and voluntary for B2G transactions in Thailand.

What is the B2B e-Invoicing status in Thailand?

B2B e-Invoicing in Thailand is voluntary since 2020-01-01. Voluntary e-Tax Invoice system with government incentives.

What technical standards must my software support for Thailand e-Invoicing?

Thailand requires compliance with XML format with digital signatures, Revenue Department e-Tax Invoice specifications standards. Supported formats include XML with digital signature requirements, Integration with Revenue Department validation system. Archiving requirement: 5 years retention (up to 7 years if prescribed) per [Revenue Code Section 87/3](https://www.rd.go.th/english/37747.html); Electronic storage valid under Electronic Transactions Act; Must maintain integrity and accessibility.

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Thailand e-Invoicing

Q: What is the B2G e-Invoicing status in Thailand?

B2G e-Invoicing in Thailand is voluntary since 2020-01-01. e-Tax Invoice system available for B2G transactions with government incentives and streamlined processes.

Q: What e-Invoice formats does Thailand support?

Thailand supports the following e-Invoice formats: XML with digital signature requirements, Integration with Revenue Department validation system.

Q: What e-Invoicing standards does Thailand use?

Thailand uses the following e-Invoicing standards: XML format with digital signatures, Revenue Department e-Tax Invoice specifications.

Q: What ERP systems support Thailand e-Invoicing?

Major ERP systems including SAP, Oracle, Microsoft Dynamics, Sage, and QuickBooks support Thailand e-Invoicing through XML with digital signature requirements, Integration with Revenue Department validation system. Integration typically requires Peppol network connectivity or direct API integration.

Q: How do I integrate my accounting software with Thailand e-Invoice requirements?

To integrate with Thailand e-Invoicing: 1) Ensure your software supports XML with digital signature requirements, Integration with Revenue Department validation system, 2) Implement the required transmission method, 3) Comply with XML format with digital signatures.

Q: How do I get started with e-Invoicing in Thailand?

To get started with e-Invoicing in Thailand: 1) Review Thailand's specific requirements, 2) Ensure your software supports XML with digital signature requirements, Integration with Revenue Department validation system formats, 3) Connect to the required transmission network, 4) Test compliance before deadlines.

Updated 30 August 2025

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B2B

voluntary

since 1 January 2020

Voluntary e-Tax Invoice system with government incentives.

B2C

none

No mandatory B2C e-invoicing requirements; focus remains on B2B digitization incentives.

B2G

voluntary

since 1 January 2020

e-Tax Invoice system available for B2G transactions with government incentives and streamlined processes.

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Standards:

XML format with digital signatures

Revenue Department e-Tax Invoice specifications

Supported Formats:

XML with digital signature requirements

Integration with Revenue Department validation system

Clearance Model:

Voluntary reporting through Revenue Department e-Tax Invoice system with real-time validation capabilities

Archiving Requirements:

5 years retention (up to 7 years if prescribed) per Revenue Code Section 87/3 ; Electronic storage valid under Electronic Transactions Act; Must maintain integrity and accessibility.

N/A

No SAF-T implementation; Thailand uses e-Tax Invoice system with voluntary adoption and government digitization incentives