eSignature legality summary
The ETA provides that enforceability cannot be denied merely because an agreement is concluded electronically, except for certain prescribed matters. It recognizes a General Electronic Signature and a Reliable Electronic Signature.
Types of permitted electronic signature
A General Electronic Signature (s.9) must identify the signatory, show approval, and use a method reliable and appropriate for the circumstances (or otherwise able to identify the owner and show intent, alone or with supporting evidence). A Reliable Electronic Signature (s.26) additionally requires the creation data to be uniquely linked to and under the sole control of the signatory, with tamper-evidence for the signature and (where integrity matters) the information.
Documents that may be signed electronically
Suitable where no specific formality applies — NDAs, software licensing, life sciences, technology, recordable documents, and consumer transactions; HR, corporate resolutions, education, healthcare, and insurance typically do not require a specific ETA tier either.
Use with caution / not typically appropriate
Exercise care with procurement, banking, lending, chattel paper, and government filings; regulators or financial institutions may impose specific signature requirements.
- Prescribed matters that restrict electronic signatures under the ETA
- Transactions subject to specific requirements from Thai authorities or regulated financial institutions
Seminal court cases
- Supreme Court case no. 8089/2556
- Supreme Court case no. 6757/2560
- Supreme Court case no. 4249/2563
Primary sources
- Electronic Transactions Act B.E. 2544 (2001), as amended
Disclaimer: This guide is general information, not legal advice, and is not a guarantee that any signature will be enforceable for a particular document, transaction, or jurisdiction. E-signature and data-protection laws change frequently. Confirm the requirements for your specific document and parties, and consult a licensed lawyer in the relevant country before relying on electronic signing.
Last reviewed: June 15, 2026