Power of Attorney: preparing, translating and legalising a document that will actually be accepted
Short answer
A power of attorney authorises another person to act for you within a clearly defined scope. If you live overseas and need someone to act for you in Thailand, you generally sign before a consular officer at a Royal Thai Embassy or Consulate-General, or before a Notary Public and then complete the certification chain the receiving Thai authority requires. A Thai power of attorney used in Australia normally needs an English translation, and for documents used inside Australia the translator is normally NAATI certified. Drafting and assembly usually takes 1–3 business days, excluding authority queues.
Key facts
| Common uses | Property transfers, land office matters, district office applications, bank and civil registry matters, collecting documents on your behalf, and court matters (which require the court's own form). |
|---|---|
| Forms | Several Thai authorities publish their own form, for example the Department of Lands. Using a generic form where a prescribed form exists is a common reason for refusal. |
| Signing from overseas | Sign before a Royal Thai Embassy or Consulate-General officer, or before a Notary Public followed by the certification chain accepted by the receiving authority. |
| Direction of the document | Outbound (Thailand to overseas): English translation plus translation certification by the Department of Consular Affairs · Inbound (overseas to Thailand): certification in the country of origin, Royal Thai Embassy, then Thai translation and translation certification. |
| Indicative timing | Drafting and assembly 1–3 business days · consular translation certification per the department's service rounds · embassy appointments depend on each mission's queue. |
| Validity | Many authorities accept only documents signed within the last 3–6 months, and some accept a power of attorney for one transaction only. Confirm before signing. |
Documents usually required
Passport or ID of the principal
Spell the name exactly as it appears on the travel document; a spelling mismatch is the single most common reason a set is returned.
ID of the attorney (the person acting for you)
The attorney signs the acceptance section and attaches a certified copy of their identity document.
Evidence of the underlying right
Title deed, house registration, bank passbook or company certificate, so the details in the deed match the authority's own register.
The receiving authority's prescribed form
Always request the current version directly from the authority; wording and layout change without notice.
Translation into English or Thai
Translate the whole document including stamps and signature blocks, with a certification statement naming the translator and their contact details.
Two witnesses with copies of their ID
Most Thai-format powers of attorney require two witnesses to sign and to attach copies of their identity documents.
Step by step
1) Confirm the form and the scope with the receiving authority
State exactly what may be done, with which authority, referencing which document number, and whether the authority is for one transaction or ongoing. Scope that is too broad is usually refused; scope that is too narrow forces a second document.
2) Draft the wording and verify every name
Check the principal's and the attorney's names against the passport and the civil registry, and check document numbers and property details digit by digit against the originals.
3) Sign before the authorised officer
Book the Royal Thai Embassy or Consulate, or a Notary Public accepted by the receiving authority. Never sign in advance — the officer certifies a signature made in their presence.
4) Complete the certification chain for your direction
Inbound to Thailand: certify in the country of origin, then the Royal Thai Embassy, then translate into Thai and lodge the translation with the Department of Consular Affairs. Outbound: translate into English and certify the translation before sending.
5) Assemble and deliver the set to your attorney
Send the original plus a spare copy set, with an index so your attorney can check the pack before lodging, and keep a scan of every page.
Why sets get returned
- Using a generic form where the authority prescribes its own form
- Name spelling that does not match the passport or the civil registry
- Open-ended scope such as "to do everything on my behalf" with no authority or matter named
- Signing in advance, which prevents the officer from certifying the signature
- Missing the two witnesses or their identity copies
- Translating the body only and leaving stamps and endorsements untranslated
Prefer not to manage it yourself?
Most rejected powers of attorney fail on the form, the scope or a name spelling rather than on intent. Our team has handled documents for Thai and Australian authorities for more than 15 years and works as an adviser, not just a typing service: we confirm what the receiving authority wants, draft the wording, arrange the translation and sequence the certifications so you only have to lodge once.
Frequently asked questions
I live in Australia. How do I authorise a relative to act for me in Thailand?
There are generally two routes: sign the power of attorney before an officer at a Royal Thai Embassy or Consulate-General in Australia, or sign before an Australian Notary Public and then complete the certification chain the receiving Thai authority requires. Ask the receiving authority first, because practice differs between departments.
Which language does the document need to be in?
For Thai authorities the document must be in Thai; an English original must be translated into Thai and the translation certified by the Department of Consular Affairs. For Australian authorities the document must be in English, and where the translation is produced inside Australia it is normally required from a NAATI certified translator.
Does a Notary Public certify that the translation is accurate?
No. A Notary Public, or in Thailand a Notarial Services Attorney, certifies the signature and that it was made in their presence. Accuracy of a translation comes from the translator's certification statement or from consular translation certification. These are two separate layers and should never be described as one.
How long is a power of attorney valid?
There is no single statutory expiry for every case, but in practice many authorities accept only documents signed within the last 3–6 months and some treat the authority as spent after one transaction. Confirm with the receiving authority before signing.
Can one document cover several matters?
Yes if the receiving authority accepts it. List each matter separately with the authority's name and the reference numbers. Where a matter falls under an authority with a prescribed form, prepare a separate document so one refusal does not invalidate the whole pack.
Does the attorney have to be a family member?
Usually not, but for matters affecting property rights or civil registration the authority may ask for evidence of the relationship or the reason for the appointment. Prepare supporting evidence in advance where the attorney is not a family member.
Can I correct a mistake on a signed document?
Do not erase or use correction fluid — authorities usually refuse the document on sight. Print a clean version and sign again before the certifying officer. Where a minor correction is permitted, the principal must initial every change.
Is stamp duty payable?
Some powers of attorney are instruments subject to stamp duty under the Thai Revenue Code, and the rate depends on the type of authority and the number of attorneys appointed. Check the current rate with the Revenue Department or the receiving authority before lodging.
Reviewed 13 August 2026. Always confirm the current requirement with the receiving authority before you lodge.