Power of Attorney in Thailand
(Forms, Legal Use & Requirements)

A power of attorney allows you to appoint someone you trust, such as a lawyer, family member, or friend, to manage important matters on your behalf. In Thailand, a power of attorney is widely used by both foreigners and Thai nationals to legally delegate authority to another person. The “principal” empowers another individual (the “attorney-in-fact” or agent) to act on their behalf, subject to the scope of authority granted in the power of attorney.
Power of attorney definition under Thai law
A power of attorney in Thailand is primarily governed by the Civil and Commercial Code (agency provisions) and is commonly used to authorize another person to act on behalf of the principal in legal or administrative matters. It is typically used for short-term or specific transactions which the principal cannot handle personally.
Under Thai law, an agency relationship may be terminated by revocation by the principal or renunciation by the agent. It is also extinguished upon the death, incapacity, or bankruptcy of either party, unless otherwise agreed or required by the nature of the transaction. A power of attorney in Thailand therefore automatically terminates upon the death of the principal and cannot be used to manage assets or affairs after death.
The concept of a “durable” power of attorney (remaining valid during incapacity) is not clearly established in Thai law, and acceptance depends on the institution involved. As a general principle, both the principal and the agent may revoke or renounce the authority at any time, although doing so at an inconvenient moment may give rise to liability for any resulting damage.
Capacity
A power of attorney requires that the principal has legal capacity to grant authority. As a form of agency under the Civil and Commercial Code, it is subject to general rules on capacity for juristic acts.
Power of attorney for government transactions in Thailand
Thai government departments in most cases require the use of their own standard Thai-language power of attorney forms for specific transactions carried out by someone other than the owner or principal. These official forms are typically in Thai script and are often recognized by the Garuda emblem.
For example, if you authorize someone to sell or register ownership of your condominium unit in Thailand, you must use and complete the Thai Land Office form Tor Dor 21 (ท.ด.21). In such cases, a general power of attorney drafted by a lawyer is typically not accepted, and the official form must be used. These government POAs are non-durable, limited powers of attorney intended for a specific transaction relating to a particular property, company registration, or other official matter.
These official Thai power of attorney forms often come with instructions in Thai and must be completed exactly as required by the relevant authority, including identification details, signatures, and supporting documents. In practice, Thai authorities may require that the power of attorney is recently signed and accompanied by copies of identification documents.
Foreigners in Thailand are frequently required to sign these Thai-language POA forms when dealing with the Land Office, Immigration Bureau, or company registration matters with the Department of Business Development.
Using a power of attorney with banks in Thailand
Banks and other financial institutions in Thailand may accept a power of attorney for certain transactions, such as account management or document signing. However, many banks require the use of their own internal power of attorney forms and may not accept a general POA.
In practice, the account holder may need to sign the bank’s POA in person, and the bank may impose additional requirements, including identity verification and witness procedures. The scope of authority granted under a bank POA is usually limited to specific transactions.
Medical decisions and living wills in Thailand
Thai law recognizes a living will (advance directive), but does not clearly establish a formal “medical power of attorney” with the same legal effect as in many Western jurisdictions. Thai living wills (as opposed to a last will) do not deal with the distribution of assets after death and are not a power of attorney, but a related legal instrument.
A living will is a written statement specifying what medical treatment or actions should be taken if a person is no longer able to make decisions due to illness or incapacity. Living wills are recognized and governed by the National Health Act B.E. 2550 (2007).
In a medical context, a “healthcare” or medical power of attorney may be used together with a living will to appoint a trusted person (health care proxy) to communicate with doctors or assist in decision-making when the patient is unable to do so. In practice, hospitals may have their own requirements or forms, and the role of such a representative is not as clearly defined as in some other jurisdictions.
Types of Power of Attorney in Thailand
In Thailand, powers of attorney are generally categorized based on the scope of authority granted to the agent. The main distinction is between a general power of attorney and a specific (limited) power of attorney.
General power of attorney
A general power of attorney grants broad authority to the agent to act on behalf of the principal in a range of legal or administrative matters. However, under Thai law, certain acts, such as disposing of property or entering into significant legal transactions, must be expressly authorized and cannot be assumed under a general authorization.
Specific (limited) power of attorney
A specific power of attorney is limited to a particular transaction or purpose, such as transferring ownership of property, signing documents, or handling a defined administrative procedure. This type of power of attorney is commonly required by Thai authorities.
Official government power of attorney forms
For many transactions with Thai government authorities, such as the Land Office or the Department of Business Development, standard Thai-language power of attorney forms must be used. These forms are typically limited to a specific transaction and must be completed in accordance with the requirements of the relevant authority.
Stamp Duty
A power of attorney is subject to a very small stamp duty under the Thai Revenue Code. If stamp duty is not paid at the time of execution, the document may still be valid but cannot be used as evidence until the duty (and any applicable small surcharge) has been paid. In practice, stamp duty is often only paid when the document is presented for official use or relied upon in legal proceedings.
This requirement relates to admissibility as evidence and does not affect the validity of the power of attorney itself.
Management of affairs without mandate under Thai law
Under Thai law, the concept of management of affairs without mandate may apply where a person acts on behalf of another without prior authorization, but this is distinct from a power of attorney and subject to different legal rules.
Related
- management without mandate
- agency in the civil code
- sample Power of Attorney (land office form)
Frequently Asked Questions (Power of Attorney in Thailand)
Can someone handle my 90-day report or visa extension using a power of attorney in Thailand?
In some cases, a power of attorney may be used for administrative immigration matters, such as submitting documents or collecting paperwork from the Immigration Bureau. However, for many procedures—including visa extensions or reporting requirements—the applicant is often required to appear in person.
Acceptance of a power of attorney depends on the specific immigration office and the type of application.
How long is a power of attorney valid in Thailand?
A power of attorney is valid for the period stated in the document, or until it is revoked, expires by its terms, or ends by law. In practice, Thai banks, government offices, and other authorities may require a recently signed POA or their own official form.
Do Thai government offices require a specific POA form?
Yes. Many Thai authorities require a standard Thai-language power of attorney form with a Garuda emblem. For example, the Land Office commonly requires forms such as Tor Dor 21 (ท.ด.21) for land transactions and Or Chor 21 (อ.ช.21) for condominium matters. The Department of Business Development (DBD) uses official POA forms for company-related matters such as company registration, director changes, and share transfers.
What are DBD power of attorney forms used for?
DBD power of attorney forms are used in corporate matters, including company incorporation, changes of directors, share transfers, and filings with the Department of Business Development. Foreigners involved in Thai companies are often required to sign these Thai-language forms authorizing a representative to act on their behalf.
Can a power of attorney be used in court proceedings or probate matters in Thailand?
Yes. A power of attorney may be used to appoint a lawyer or representative to act on your behalf in court proceedings or administrative cases. This is common in probate matters, where foreign heirs or executors appoint a Thai lawyer to represent them in estate administration proceedings.
Specific procedural requirements may apply depending on the court or case.
Can a power of attorney be used for Land Office transactions?
Yes, but the Land Office will usually require its own official Thai form rather than a general POA. For land title deed transactions this is commonly Tor Dor 21 (ท.ด.21), while condominium transactions commonly use Or Chor 21 (อ.ช.21).
Can a power of attorney be used for family or marriage matters at the Amphur (district office)?
In some cases, yes. A power of attorney may be accepted for certain civil registration matters at the Amphur, such as obtaining documents, house registration (Tabien Baan), or administrative filings. However, for personal acts—such as marriage registration or divorce registration—the person must usually appear in person.
Amphur offices may require a Thai-language POA and may have their own format or signing requirements. It is advisable to confirm with the specific district office in advance.
Does a power of attorney signed outside Thailand need to be notarized or legalized?
Yes, in many cases. If a power of attorney is signed outside Thailand, it may need to be notarized and legalized by a Thai Embassy or Consulate before it is accepted by Thai authorities, banks, or courts. Requirements vary depending on the institution and the type of transaction.
In some cases, a certified Thai translation may also be required.
Can my spouse act on my behalf without a power of attorney in Thailand?
Generally, no. A spouse does not automatically have legal authority to act on behalf of the other spouse in official or legal matters. A properly executed power of attorney is usually required for banks, government offices, and other institutions.
Can I appoint a health care proxy in Thailand if I can no longer make decisions?
In Thailand, you can set out your medical wishes in a living will (advance directive) under the National Health Act. Thai law does not clearly establish a formal “health care proxy” or medical power of attorney with the same legal effect as in some other jurisdictions.
In practice, a trusted person may be designated to communicate with doctors or assist in decision-making, often in combination with a living will. However, hospitals may have their own requirements, and the role of such a representative is not as clearly defined in law.