Power of Attorney in Thailand: Which Form for Which Use?

Thailand does not have one universal power of attorney. The correct form depends entirely on which authority will receive it: the Land Department, a bank, the Department of Business Development (DBD), a court, Thai Immigration, or a private party such as a business partner.

Most POA guides written for foreigners describe the general concept of a power of attorney and stop there. That leaves out the detail that actually determines whether your document works: a Land Office will not accept a power of attorney drafted by a lawyer, no matter how thorough it is. Only its own official form does the job. The same gap applies to signing method. Some powers of attorney can be created and signed electronically today. Others cannot, in practice, because the receiving authority still requires a paper original.

This guide maps the most common power of attorney use cases in Thailand to the correct form, and tells you plainly which ones can be signed online and which ones still require a trip to the counter with the paper original.

TL;DR: There is no single power of attorney form that works everywhere in Thailand. Property transfers at the Land Department require the official Tor Dor 21 (land or house) or Or Chor 21 (condo unit) form, submitted on paper, because land registration cannot currently be completed with an e-signature. Banks, the Department of Business Development (DBD), courts, and Thai Immigration each require their own official paperwork, typically in person. General business powers of attorney, meaning internal authorizations and routine management mandates that don't require registration with a government authority, can be created and e-signed today. The rest of this guide breaks down each use case so you know exactly which form applies to yours.

Key Takeaways

• Thailand has no universal power of attorney form; the correct document depends on the receiving authority, not on your preference.
• Property transfers always require the Land Department's own Tor Dor 21 (land/house) or Or Chor 21 (condo) form, on paper, and cannot currently be completed by e-signature.
• Banks, the DBD, courts, and Thai Immigration each require their own official forms, generally submitted in person.
• General business and internal authorizations that don't require government registration can be created and e-signed today.
• A valid power of attorney in Thailand needs a stamp duty and, in most cases, at least one witness.
• A power of attorney signed outside Thailand generally needs notarization plus legalization by a Thai embassy or consulate before it can be used.

Getting Started with Power of Attorney in Thailand

What is a power of attorney in Thailand?

A power of attorney is a document in which one person, the principal, authorizes another person, the agent or "attorney-in-fact," to act on their behalf for a defined purpose. In Thailand, this authority derives from the agency (mandate) provisions of the Civil and Commercial Code, the same body of law that governs contracts generally.

The document itself can range from a short, single-purpose authorization to a broad, ongoing mandate. What it authorizes, and how much detail it contains, determines which form is acceptable to the authority that will receive it. That distinction matters more in Thailand than in many other countries, because several government bodies will only accept their own standardized form rather than a general document drafted by a lawyer.

General vs. Special power of attorney: what's the difference?

The main difference is scope. A general power of attorney grants broad authority to manage ongoing affairs, such as ordinary business operations. A special power of attorney authorizes one specific act, such as selling a particular piece of property or representing someone at a single administrative appointment.

Some sources describe a general power of attorney as valid for a limited period, commonly cited as around three months, but this figure comes from a single source and should not be treated as a fixed rule. In practice, the duration of a power of attorney depends on what the document itself states, and on any expiration terms set by the receiving authority. Confirm the applicable duration with your legal counsel before relying on it.

Can I e-sign a power of attorney in Thailand?

Yes, for powers of attorney that don't require registration with a government authority, such as general business or internal authorizations. No, in practice, for the official forms used by the Land Office, DBD, courts, and Thai Immigration, which still require a paper original.

This split comes directly from Thai law. The Electronic Transactions Act B.E. 2544 (2001), as amended in B.E. 2551 (2008), gives electronic signatures the same legal standing as handwritten ones for most transactions. However, the Royal Decree Prescribing Civil and Commercial Transactions Exempted from the Application of the Law on Electronic Transactions, B.E. 2549 (2006), carves out specific exceptions under Article 3, including transactions relating to family and succession, and real property transactions that require registration with the Land Department. That exclusion is why a Land Office power of attorney cannot currently be completed electronically, even though the underlying ETA framework supports e-signatures broadly.

For a fuller explanation of how the ETA applies across different document types in Thailand, see our guide to e-signature legality in Thailand.

Which Power of Attorney Form Do You Need?

The table below maps the most common power of attorney use cases in Thailand to the form each authority requires, and whether that form can currently be created and signed electronically.

Each use case is explained in more detail below.

Buying or selling property: the Tor Dor 21 / Or Chor 21 form

The Land Department accepts only its own official form for property transactions, not a general power of attorney drafted by a lawyer. Use the Tor Dor 21 form for land or a house, and the Or Chor 21 form for a condominium unit.

The form requires precise information matching the property's title deed, and it must be signed in a specific way. Most offices require the principal to sign with at least one witness present, and in cases where a fingerprint is used instead of a signature, two witnesses are typically required.

The exact number of required witnesses, and whether a fingerprint always triggers the two-witness requirement, should be confirmed against the current Land Office practice and reviewed by legal counsel before relying on it for a transaction.

Foreign buyers have particular reason to care about this rule. In 2025, foreign buyers purchased 6,160 condo units in Bangkok and its surrounding area, the highest volume since 2020 (Nation Thailand, 2025). In the first half of 2025 alone, foreign buyers purchased 7,167 condo units nationwide, worth roughly ฿28.7 billion, according to property data aggregator Hawook (Hawook, 2025), and foreign buyers' overall market share rose to 23.5% of units sold in 2025, up from 12.1% in 2019 (Hawook, 2025). In Bangkok's CBD, 44.2% of condo units sold went to foreign buyers, rising to 80.3% in the Ratchada-Lad Phrao area (Hawook, 2025). Foreign ownership in a condominium building is capped at 49% of the total sellable floor area (cross-referenced across property law sources, 2025 to 2026).

A large share of these buyers are purchasing remotely, without being physically present in Thailand for every step of the transaction. That's exactly the situation the Tor Dor 21 and Or Chor 21 forms are designed to handle, but it also means the paper requirement is unavoidable: no e-signature workaround currently satisfies the Land Department.

Banking: authorizing someone to manage your account

Most Thai banks require their own paper form to authorize someone to manage your account, typically completed in person at a branch. A general power of attorney drafted outside the bank's own process is rarely accepted on its own.

This varies by institution. Some banks may accept a notarized general power of attorney alongside their own supporting documents, but the safest assumption is that a bank's own form will be required. Confirm the specific requirement with the bank branch handling the account before relying on any other document.

Company registration and business filings with the DBD

The Department of Business Development uses its own official forms for company registration, director changes, and share transfers. A general power of attorney is not a substitute for these forms.

In-person identity verification has become more common for higher-risk filings, such as changes to company directors or ownership structure. That trend makes the DBD's paper-based process even less compatible with a fully remote e-signature workflow for now.

Court cases: the Appointment of Attorney form

To appoint a lawyer to represent you in a Thai court case, you need the court's own Appointment of Attorney form, not a general power of attorney. Courts treat this as a distinct filing tied to the specific case, and a broader POA document does not run in its place.

For a related question, on whether electronically signed documents in general can serve as evidence in Thai courts, see our guide on using electronically signed documents as court evidence in Thailand.

Immigration: visa extensions and 90-day reports

An agent can often submit a 90-day report or handle certain visa extension steps on your behalf using a power of attorney, but the format and the filing itself typically remain paper-based through Thai Immigration's standard process.

This use case comes up often among the foreign residents living in and around Bangkok, many of whom rely on an agent or family member to keep routine immigration paperwork current while they are traveling or working outside the country.

General business authorizations and internal mandates

This is the one category where the answer flips: a general business power of attorney, covering internal authorizations, routine management mandates, and operational delegation that doesn't require registration with a government authority, can be created and e-signed today.

If this is your use case, an e-signature platform such as Jabmue can be used to draft, send, and sign a general business power of attorney, with an audit trail attached to the finished document. That audit trail strengthens evidentiary weight; it does not guarantee acceptance by any particular counterparty or court, and you should still consult your legal counsel for anything involving significant business risk.

Formalities That Apply to Every Power of Attorney

How much does a power of attorney cost? (stamp duty)

A valid power of attorney in Thailand must carry a stamp duty, and the amount depends on the type of authorization it grants.

Reported figures put the stamp duty at 10 baht for a power of attorney covering a single act, 20 baht when it covers multiple joint acts, and 30 baht when it authorizes multiple separate agents (Thailandlawoffice.com, cross-referenced with Revenue Department guidance). These figures should be confirmed against the current Revenue Department schedule and reviewed by legal counsel before publication or reliance, since public sources diverge slightly on the exact framework.

Do I need witnesses?

Most powers of attorney in Thailand require at least one witness, and two witnesses when the principal signs by fingerprint instead of a handwritten signature.

This witness rule is well documented for the Land Office's Tor Dor 21 form specifically (Thailandlawonline.com), and it should be confirmed with legal counsel whether it applies as a general rule across all power of attorney types or only to land-related filings, before relying on it outside the property context.

Signing a power of attorney outside Thailand: notarization and legalization

A power of attorney signed outside Thailand generally needs to be notarized in the country where it is signed, then legalized by a Thai embassy or consulate, before it can be used inside Thailand.

Thailand does not have a notary public system in the Western sense. Instead, this role is filled by Notarial Services Attorneys, lawyers licensed by the Lawyers Council of Thailand to certify documents for use both domestically and abroad. Once the document is notarized and legalized by the relevant Thai embassy or consulate, it may also need further legalization by Thailand's Ministry of Foreign Affairs after arrival, depending on the receiving authority's requirements. Confirm the exact sequence with your legal counsel or the receiving institution before relying on the document.

If your use case is a general business power of attorney rather than a property, court, or corporate filing, you can see current pricing for creating and signing that type of document electronically once you're back in Thailand, or from anywhere with an internet connection.

Common Mistakes to Avoid

• Using a lawyer-drafted general POA for the Land Office. It will be rejected. Only the official Tor Dor 21 or Or Chor 21 form is accepted for property transactions.
• Forgetting the stamp duty. A power of attorney without the correct stamp duty may not be treated as valid by the receiving authority.
• Signing before the form is fully completed. On the Tor Dor 21 form specifically, signing an incomplete document is not permitted.
• Assuming an e-signed business POA covers a use case that requires government registration. It doesn't. E-signing works for general business and internal authorizations, not for Land Office, DBD, court, or immigration filings.

Frequently Asked Questions

Can I e-sign a power of attorney in Thailand?

Yes, for general business and internal authorizations that don't require registration with a government authority. No, in practice, for the official forms required by the Land Office, DBD, courts, and Thai Immigration, which still require a paper original submitted in person or by mail. See the section above on e-signing a power of attorney for the legal basis.

What is Tor Dor 21?

Tor Dor 21 is the Thai Land Department's official power of attorney form, required for property transactions involving land or a house. A separate form, Or Chor 21, applies to condominium units. Neither can currently be replaced by a general power of attorney drafted by a lawyer, and both require submission on paper.

Do I need a lawyer to create a power of attorney in Thailand?

Not always. For a general business or internal authorization that can be e-signed, many people draft and send the document themselves without a lawyer. For Land Office, court, DBD, or corporate matters, working with legal counsel is recommended, since these use cases involve the receiving authority's own official forms and formal requirements that a general document cannot satisfy.

How much does a power of attorney cost in Thailand?

A power of attorney requires a stamp duty, generally reported at 10 to 30 baht depending on the type of authorization, plus any legal fees if you engage a lawyer to draft or review the document. The exact stamp duty schedule should be confirmed with current Revenue Department guidance before relying on it.

Can a power of attorney be signed outside Thailand?

Yes. It generally needs to be notarized in the country where it's signed, then legalized by a Thai embassy or consulate before it can be used in Thailand. Depending on the receiving authority, further legalization by Thailand's Ministry of Foreign Affairs may also be required after the document arrives in the country.

How long is a power of attorney valid in Thailand?

It depends on what the document itself states. There is no single universal validity period that applies to every power of attorney in Thailand, and some receiving authorities may also apply their own expiration terms. Confirm the applicable duration with your legal counsel or the receiving authority before relying on an older document.

Conclusion

The form you need always depends on who is receiving it, not on a single template that works everywhere. Property transactions go through the Land Department's own Tor Dor 21 or Or Chor 21 form. Banks, the DBD, courts, and Thai Immigration each require their own paperwork. None of these can currently be completed with an e-signature.

General business and internal authorizations sit in a different category. Those can be created and signed electronically today, with an audit trail that strengthens evidentiary weight without guaranteeing acceptance by any particular party. That's the honest boundary of what a platform like Jabmue covers: general business POAs, not Land Office, DBD, court, or immigration filings.

If your use case is a general business power of attorney, you can start free and create one in a few minutes. For anything involving property, court proceedings, or corporate filings, start with the official form your receiving authority requires, and bring in legal counsel for the parts of the process that carry the most risk.

This content is general information, not legal advice for your specific situation. Consult your legal counsel before executing a power of attorney, especially for property, court, or corporate matters.