Notarisation of Power of Attorney — Thailand (2026)

Used to appoint a relative or lawyer abroad to act on your behalf — selling property, closing bank accounts, estate administration, tax filings or company registration. The scope of authority must be specific; many jurisdictions reject open-ended authority.

Original passport or Thai ID of the grantor — you must sign in front of the attorney · The draft POA in the form required by the receiving party; do not pre-sign it · Attorney-in-fact details: full name as per passport, ID number, address · Transaction details such as title deed number, account number or company registration number

Signature witnessing and acknowledgement before the notarial services attorney

Signing at home beforehand — the attorney can only certify a signature made in their presence · Name spelling that differs from the passport, which the receiving party will reject · Using a generic template when the destination (some US states, Japan) mandates its own form · Skipping Department of Consular Affairs legalisation and destination embassy attestation

After notarisation, if the destination requires state-level authentication, legalise the document at the Department of Consular Affairs (MFA) and then at the destination country's embassy or consulate in Thailand.

Same-day notarisation with one working day's notice; MFA legalisation adds 1–3 working days. Fees are based on the number of documents and stamps, and you get a written quote before any work starts.

No. Thailand is not a party to the Hague Apostille Convention, so Thai documents intended for use abroad follow the legalisation route: certification by a notarial services attorney, then legalisation at the Department of Consular Affairs (Ministry of Foreign Affairs), then attestation at the destination country's embassy or consulate in Thailand. Check the current status with the HCCH and the Department of Consular Affairs before you act.

Thailand has no notary public office in the common-law sense. Instead, lawyers registered with the Lawyers Council of Thailand under its 2008 regulation act as Notarial Services Attorneys, and their certifications are the form accepted by foreign authorities.

Yes for signature certification — you sign in the attorney's presence with an original passport or Thai ID. For a certified true copy, the original document must be produced.