Notary Public in Thailand — The 2026 Expat Guide (With Apostille Update)

What 'Notary Public' actually means in Thailand

Thailand does not have a standalone Notary Public profession like the United States or the United Kingdom. Instead, the Lawyers Council of Thailand (under Royal Patronage) trains practising lawyers under the 2003 Notarial Services Attorney regulation. Only a lawyer who has completed the 40-hour course and registered for the notarial endorsement may act as a Notary Public.

This matters for expats because the title looks the same in English, but the underlying authority is different. A Thai Notary signs and stamps documents in their capacity as a registered attorney, with their lawyer ID number printed alongside the seal. Embassies and overseas authorities recognise this as the Thai equivalent of a Notary Public for cross-border use.

• Must be a licensed Thai lawyer in good standing with the Lawyers Council
• Must hold a current Notarial Services Attorney endorsement
• Seal includes the lawyer's bar number and registration ID
• Authorised for signature certification, certified true copy, affidavits, and Power of Attorney

When you actually need a Notary Public in Phuket

Most expats in Phuket end up needing a Notary for one of six recurring situations. Knowing which bucket your document falls into helps you book the right combination of services in one visit, instead of returning two or three times.

• Power of Attorney for property sale, vehicle transfer, or bank account closure back home
• Affidavit of Single Status for marriage overseas (Denmark, Las Vegas, UK, Hong Kong)
• Certified true copy of passport, marriage certificate, degree, or company papers
• Signature certification on overseas contracts, share transfers, or trust documents
• Notarized translation of Thai documents (driving licence, criminal record, medical reports)
• Board resolution and certificate of good standing for opening a branch office overseas

How the 2026 Apostille Convention changes the workflow

Thailand deposited its instrument of accession to the Hague Apostille Convention in late 2025, with entry into force in mid-2026. Once active, documents originating in Thailand can be 'Apostilled' by the Department of Consular Affairs (MFA) and used directly in 125+ member states — Australia, the UK, the US, all EU members, Japan, Korea, and most of Latin America.

The practical chain for Hague-member destinations becomes shorter:

• Step 1 — Notary Public certifies the document (or its translation)
• Step 2 — MFA Department of Consular Affairs attaches the Apostille
• Step 3 — Use directly in the destination country (no embassy stop)

What if your destination is NOT a Hague country?

Around 70 countries remain outside the Convention — including the UAE, Saudi Arabia, China (Hong Kong and Macau are members, mainland is now in too), Vietnam, Cambodia, Laos, Myanmar, Qatar and Kuwait. For these, the traditional four-step legalization chain is unchanged:

• Notary Public certifies the document
• MFA Department of Consular Affairs legalizes the notary's signature
• Destination embassy in Bangkok authenticates the MFA stamp
• Document is then valid for use in the destination country

Typical fees and turnaround in Phuket

Notary fees in Thailand are not capped by statute. Most reputable firms in Phuket publish transparent per-document rates so clients can budget accurately. As a benchmark for 2026:

• Signature certification: THB 1,000–1,500 per signature
• Certified true copy: THB 1,000–1,500 per document
• Affidavit drafting + notarization: THB 2,500–3,500 per affidavit
• Power of Attorney (drafted bilingual): THB 3,500–6,500 depending on complexity
• Same-day completion is standard in Phuket if you arrive by 15:00

Choosing the right Notary in Phuket

Phuket has roughly 80–100 active Notarial Services Attorneys, concentrated in Phuket Town, Patong, and around Boat Avenue / Laguna. The right choice depends less on price and more on three practical factors.

• English working competence — affidavits and POAs are drafted live in front of you
• MFA liaison — does the firm walk your document through legalization the next day, or are you on your own?
• Translation pairing — for many documents, you need a certified translator and a notary at the same desk