Signing a Power of Attorney in Thailand for Use Overseas
7 min read · Updated 2026-08-10
In short
Use the receiving institution's own template whenever one exists, sign in front of the notarial attorney, keep the identity details identical to your passport, and legalise the signature before sending. Most refused POAs fail on wording or scope, not on the seal.
A power of attorney is the document foreign institutions scrutinise hardest, because it lets someone else act on your behalf. Banks, land registries and probate courts each have their own idea of acceptable wording, and a generic template downloaded online is frequently refused even when perfectly notarised.
Ask the receiving institution for its template first
Most banks, land offices and share registrars publish or will email a form. Using it removes the largest single risk, because the wording has already been approved internally. Where no template exists, the scope must be written narrowly and precisely: the specific account, property, case number or transaction.
Define scope, duration and substitution
State exactly what the attorney-in-fact may do, whether the authority expires on a date or on completion of the transaction, and whether they may delegate to someone else. Open-ended 'all matters' language is a common refusal ground for banks and land offices.
Identity details must match the passport exactly
Given names, family name, order of names and any middle name must match the passport machine-readable line. Where a Thai civil record spells the name differently, add a same-person certificate so the two records reconcile in the file.
Sign in the attorney's presence, then legalise
The notarial certificate records that you signed before the attorney; a pre-signed page cannot be certified honestly. After certification the signature goes to the Department of Consular Affairs and, where required, the destination embassy.
Send the right copies
Many institutions require the original certified set by courier and will not act on a scan. Ask before sending whether they need one original or several, and keep a full scan for your own record before shipping.
Frequently asked questions
Can two people sign the same POA at different times?
Each signature has to be witnessed, so either both attend together or the attorney issues separate certificates for each signing. Confirm with the receiving institution that split execution is acceptable first.
Does the attorney-in-fact need to attend?
Usually not. The person granting the authority is the one whose signature is certified; the appointee's details simply need to be stated correctly, with an identity document reference.
Is a bilingual POA better?
Often, yes. A Thai-English parallel text helps if any Thai authority also has to read it, and it does not disadvantage the foreign reader as long as the operative language is stated.
Can your team handle the whole process for me?
Yes. Our practitioners review the file before submission, deal with the Thai authorities and the destination embassy on your behalf, and report back at each stage. Message LINE @Thainotary or call 094-895-8999 with a photo of what you already hold and the destination country, and we will map the correct chain for your case.
What should I prepare before the first consultation?
A scan or clear photo of every document you already have, the destination country and receiving authority, and the date you need the file ready. From that we can list the missing items, the correct order of certification, and an approximate window before any work starts.
Would you rather we handled it?
Our practitioners review the file, deal with the authorities and report at each stage. Call 094-895-8999 or message LINE @Thainotary.