Notarising a power of attorney in Thailand
Short answer
A power of attorney intended for use abroad is normally signed in front of a Notarial Services Attorney, who certifies the signature and the identity of the principal. If the receiving authority requires it, the document is then translated and the translation legalised by the Department of Consular Affairs, followed by an Apostille or embassy legalisation. The notarisation step itself usually takes 1–2 business days.
A power of attorney is the document most frequently sent for notarisation, because the attorney-in-fact has to act on the principal's behalf in another jurisdiction. Banks, land registries, courts, and company registries abroad want evidence that the person named in the document really signed it in front of an authorised witness. In Thailand that witness is a Notarial Services Attorney registered with the Lawyers Council of Thailand.
When this is needed
- • Authorising a relative or lawyer overseas to manage property, sell a house, or transfer land
- • Authorising a representative to deal with a bank, close an account, or receive an inheritance abroad
- • Authorising a director or shareholder to sign cross-border corporate documents
- • Authorising someone to conduct litigation or receive court documents on your behalf
- • Authorising a representative to handle insurance, pension, or provident fund matters overseas
What to prepare
- • The draft power of attorney in the wording the receiving authority requires; use their template when one exists
- • Original passport or Thai ID card of the principal, valid on the day of signing
- • Full name, identification number, and address of the attorney-in-fact exactly as they appear on their own identification
- • Supporting documents referred to in the power of attorney, such as a title deed number, bank account number, or company registration
- • Written confirmation from the receiving authority about which further steps (translation, legalisation, Apostille) are needed
Step-by-step process
1. Confirm the wording with the receiving authority
Ask the bank, registry, or court abroad whether they accept a general power of attorney or require their own form. Getting this wrong is the single most common cause of rework, because the whole certification chain has to be repeated.
2. Attend and sign in front of the attorney
The principal signs the document in the presence of the Notarial Services Attorney and presents original identification. The attorney records the identification details and attaches a certificate to the document.
3. Translate if the destination is not English-speaking
Where the receiving authority works in another language, the document and the certificate are translated by a translator that authority recognises — a NAATI-certified translator for Australia, a sworn translator in many European countries.
4. Legalise and, if required, obtain an Apostille
The Department of Consular Affairs certifies the translation, then the document is submitted for an Apostille or to the destination embassy in Thailand, depending on whether the destination country is party to the Apostille Convention.
Common reasons documents are rejected
- • The name in the document does not match the passport exactly, including middle names and spelling
- • The scope of authority is written too narrowly, so the attorney-in-fact cannot complete the transaction
- • No expiry date or an expired date, which some registries reject outright
- • Signing before attending, so the attorney cannot certify that the signature was made in their presence
- • Skipping the consular step because the destination only mentioned notarisation in general terms
Frequently asked questions
Can I sign a power of attorney at home and bring it in?
No. The certification states that the signature was executed in front of the attorney, so the document must be signed during the appointment. If it is already signed, bring a clean unsigned copy to sign again.
Can two principals sign the same power of attorney?
Yes, provided every signatory attends and presents identification. Each signature is certified individually, and the certificate lists all signatories.
Does a power of attorney need witnesses in addition to the attorney?
It depends on the destination's law. Some jurisdictions require two independent witnesses in addition to the notarial certificate. Confirm this before the appointment so witnesses can attend.
How long is a notarised power of attorney valid?
Validity comes from the document's own wording and the receiving authority's rules, not from the certification. Many registries ask that the document be no more than three to six months old at submission.
Can a company grant a power of attorney this way?
Yes. The authorised director signs and presents the company affidavit and shareholder list so the attorney can verify signing authority. See the corporate documents page for the full list.
Do I need a translation as well?
Only if the receiving authority does not work in the document's language. For Australia, translations must generally be produced by a NAATI-certified translator; the notarisation and the translation are separate steps.
Related documents
- Affidavit / statutory declarationHow to have an affidavit or statutory declaration signed and certified by a Notarial Services Attorney in Thailand for use with overseas authorities, courts, and universities.
- Certified true copyHow a Notarial Services Attorney certifies that a copy matches the original Thai document, which originals must be presented, and how the copy fits into the overseas legalisation chain.
- Corporate documentsHow company affidavits, shareholder lists, board resolutions, and director signatures are notarised in Thailand for foreign registries, banks, and counterparties.
Related services
Reviewed August 2026. General procedural information only, not legal advice. Confirm current requirements with the Lawyers Council of Thailand and the Department of Consular Affairs.
Official sources you can verify
The information on this page is based on the official sources below. Reviewed August 2026. Requirements change — always confirm with the receiving authority before lodging.
- Lawyers Council of ThailandRegister of lawyers and the regulations governing Notarial Services Attorneys.
- Department of Consular Affairs, MFA ThailandRules and procedures for legalisation of documents in Thailand.
- DFAT (Australia) — notarial services, authentications and apostillesAustralian government document certification services.