Power of attorney in Thailand and cross-border mandates — 85 FAQs

A general mandate lets the attorney-in-fact act across a broad range of matters; a specific mandate names one transaction or a narrow set, such as selling one plot identified by title deed number. In practice almost every Thai and foreign authority wants the specific form because the scope is auditable and disputes are fewer. Agency law sits in the Thai Civil and Commercial Code from section 797 onwards.

At minimum: full names and ID or passport numbers of principal and attorney-in-fact spelled exactly as in their identity documents, the authorised act described specifically, the asset or document number involved, an end date or terminating condition, the place and date of signing, the principal's signature, and witness signatures where the receiving authority requires them.

Yes. A power of attorney is a dutiable instrument under instrument 7 of the stamp duty schedule to the Revenue Code, with different rates depending on whether one person is authorised for a single act, for more than one act, or several persons act separately. Check the current rate at rd.go.th before affixing stamps: an under-stamped instrument cannot be used as evidence in civil proceedings until the duty and surcharge are paid.

Follow the receiving authority. For a Thai land office, district office or court, draft in Thai. For use abroad, draft in the destination language or produce a bilingual document. In a bilingual document, state which language version prevails if the two conflict, so nothing turns on translation choices later.

Someone of legal age and capacity with no conflicting interest in the matter — the buyer should not act for the seller in the same sale. Most authorities also ask for a copy of the attorney-in-fact's ID card or passport signed as a true copy, attached to the mandate.

Yes. Land offices generally require the Department of Lands mandate form (T.D.21 for land, the condominium equivalent for units), fully completed: type of juristic act, title deed or unit number, area, and agreed price, with ID cards and house registrations of both parties attached. Check the current form on dol.go.th before completing it.

Usually you sign the Department of Lands mandate before an officer of the Royal Thai Embassy or Consulate-General where you live, so your signature is certified, then courier the original to your attorney-in-fact to file at the land office. If you sign before a local notary instead, the document must be legalised in the chain used by that country, translated into Thai, and the translation certified by the Department of Consular Affairs. Ask the specific land office in advance — practice varies.

The Department of Lands warns against signing an incomplete mandate and instructs applicants to strike through unused spaces. Blanks can be filled in afterwards, and that is behind a large share of land-transfer disputes. Any correction must be initialled by the principal at every amended point.

Yes, but the juristic act must be named exactly — mortgage, discharge of mortgage, sale with right of redemption, or receipt of inherited property — with the key figures or conditions stated. The land office will not go beyond what is written. For several acts, list them as separate numbered items rather than writing something broad like "deal with everything concerning the land".

Yes. A lease of immovable property longer than three years must be registered with the competent official to be enforceable for its full term, so the mandate should grant both the power to sign the lease and the power to register it at the land office, stating the term and the agreed rent.

Mostly no. Banks keep their own mandate forms and usually require signing in front of branch staff, or signature certification by a Royal Thai Embassy if you are abroad. Call the branch that holds the account first and ask which form, how many witnesses, and which certification routes they accept before preparing anything.

Yes. The Revenue Department accepts an agent acting under a properly stamped mandate with certified copies of both parties' identity documents. If the refund is paid by cheque or transfer, state the account name and number in the mandate so payment cannot be misdirected.

Yes. The Social Security Office and fund administrators use their own claim forms with a mandate attached. Name the benefit precisely — old-age benefit, contribution history certificate, fund withdrawal — and attach proof of relationship if the agent is a relative.

Petitions are filed by a lawyer. An heir abroad can sign the power of attorney to the lawyer and the heirs' letter of consent before a Royal Thai Embassy or Consulate officer and courier the originals for filing. Some courts still want the heir to testify in person or by video conference, so plan for that possibility.

A consent letter records that an heir does not object to a named person becoming administrator; a power of attorney lets someone act in your place. They are not interchangeable, and estate cases usually need both, together with the death certificate, the house registration showing the deceased struck off, and proof of heirship.

Yes. Once the court has appointed an administrator, the administrator may authorise someone else to register the inheritance transfer using the Department of Lands mandate, attaching the court order and the certificate that the case is final. The land office checks that the stated scope actually covers that registration type.

A mandate signed by the directors with signing authority as shown in the DBD company affidavit, with the company seal if the affidavit requires one; the affidavit itself dated within the period the recipient accepts (commonly one to six months); copies of the directors' and agent's identity documents; and full stamp duty.

Only if the first mandate expressly grants the power to sub-delegate. Without that wording the attorney-in-fact cannot appoint anyone else. Recipients normally want to see the whole chain at once, and in practice multiple layers of sub-delegation sharply raise the chance of rejection.

Sign before a notary public in the country of residence, then follow that country's chain — an Apostille if it is a convention party, otherwise foreign-ministry legalisation followed by Royal Thai Embassy certification — then have the document translated into Thai with the translation certified by the Department of Consular Affairs before filing in Thailand.

The non-travelling parent should state the child's name, passport number, destination, travel dates, who will accompany the child, and contact details, and sign before a Notarial Services Attorney in Thailand or a Royal Thai Embassy officer abroad. Some destinations also want the letter translated into their language and legalised.

For applicants under 20 the Department of Consular Affairs requires the persons with parental authority to attend or to provide a consent letter with a properly certified signature. If one parent is abroad, that consent is signed before a Royal Thai Embassy or Consulate officer. Check the current document list at consular.mfa.go.th before booking.

A consensual divorce registration normally requires both spouses to appear at the district registrar. The Department of Provincial Administration has procedures for cross-registrar divorces and for a spouse who is overseas, handled through a Royal Thai Embassy — not by authorising a third party to sign instead. Ask the district office where you intend to file before preparing documents.

Thailand has no common-law notary public. The equivalent function is performed by a Notarial Services Attorney registered with the Lawyers Council of Thailand. In addition, consular officers of the destination country's embassy in Thailand can certify signatures for documents to be used in their own country.

Signature certification confirms that the named person signed in the certifier's presence after showing identification. Translation certification confirms the translation matches the original. They are separate steps and usually run in sequence. The Department of Consular Affairs certifies translations and, for certain documents, signatures of authorised officials — it does not replace the Notarial Services Attorney step.

Thai law sets no general witness requirement for a mandate, but the Department of Lands form and most bank forms provide for two, and destinations such as the United Kingdom and Australia commonly require witnesses who are neither relatives nor interested parties. Prepare two witnesses with copies of their identity documents.

Usually four: signing before a Notarial Services Attorney, translation into the destination language where needed, certification by the Legalisation Division of the Department of Consular Affairs, and legalisation at the destination country's embassy in Thailand. The chain shortens for convention parties once the Apostille Convention enters into force for Thailand on 28 February 2027.

A private document needs a traceable signature first, so it normally goes through signature certification by a Notarial Services Attorney before the consular step. Check the accepted document types and appointment process at consular.mfa.go.th.

From 28 February 2027, documents for use in another convention party will end at the Apostille certificate issued by Thailand's competent authority, with no destination-embassy step. Non-party states, including some Gulf countries, keep the existing chain. Before that date the current chain still applies to everything.

Generally no. It must be legalised in the country of origin, certified by the Royal Thai Embassy there, then translated into Thai with the translation certified by the Department of Consular Affairs before a land office, bank, court or other Thai authority will accept it. Allow several weeks overall, depending on each queue.

Yes. An Apostille authenticates the origin of a signature and seal; it does not certify content and does not make the document Thai. Thai authorities still want a Thai translation certified by the Department of Consular Affairs, and the translation must cover the body, the seals, and the Apostille certificate itself.

Issue a written revocation, notify the attorney-in-fact, notify the authorities where the document might be used — the local land office and the bank in particular — and recover the original. Keep proof of notification: a third party who acted in good faith before learning of the revocation may still bind you.

As a rule agency ends when the principal dies, becomes incapacitated or is adjudged bankrupt. Using the document after that may be an offence, and authorities refuse it once a death certificate or the house-registration entry shows the death. The matter then moves into estate administration instead.

No general statutory limit — the receiving authority decides. In practice land offices, banks and many embassies want a mandate signed within the last three to six months, and older documents are usually sent back to be redone, so sign as close to the intended use as you can.

Name spelling that does not match the passport or ID card; scope either too broad or not covering the actual act; blanks or uninitialled corrections; insufficient stamp duty; an outdated form; the wrong certification order, such as going to the consular office before the signature is certified; and translations that omit seals or the reverse side of pages.

Keep the scope as narrow as the job allows, put an expiry date in the document, expressly prohibit sub-delegation, state a minimum price where an asset is being sold, keep a copy of every mandate with a note of who holds it and since when, and notify authorities immediately when you revoke it.

The sequence Thai authorities expect is: sign before a notary public or a Thai consular officer abroad, have the competent authority of that country certify the notary's signature, then have the Thai embassy or consulate legalise it. Once in Thailand the document is translated into Thai by a translator who states their name and contact details, and the translation is certified by the Legalisation Division of the Department of Consular Affairs before it is shown to the land registrar. When the Apostille Convention enters into force for Thailand on 28 February 2027, an apostille from a member state replaces the embassy step, but the translation and translation-certification steps remain.

Yes, using Department of Lands form T.D.21 completed in full: title deed number, parcel and survey numbers, sub-district, district and province, and a scope that expressly covers signing the sale contract and receiving the price. Never leave blank spaces to be filled in later, which is the most common route to fraud; strike through blanks and initial them. Attach passport copies certified as true copies, including every page bearing an immigration stamp.

A power of attorney is instrument 7 in the stamp duty schedule of the Revenue Code, with different rates depending on whether one person is authorised for a single act, one person for repeated acts, or several people acting separately. The principal is liable and must cancel the stamp. An instrument that is not properly stamped cannot be used as evidence in a civil case until the duty and surcharge are paid. Confirm current rates with the Revenue Department before signing.

Usually not. Banks apply their own mandate forms under know-your-customer and anti-money-laundering rules. The workable path is to contact the account-holding branch in advance for its specific form, have the account holder sign it before a notary abroad, legalise it through the embassy route (or by apostille once the convention applies), and courier the original back. Some banks add a video identity check.

It ends on the stated expiry date, on completion of the authorised business, on revocation by the principal, on renunciation by the attorney-in-fact, or on the death, incapacity or bankruptcy of either party under the agency provisions of the Civil and Commercial Code. Safe revocation means a written revocation delivered to the attorney-in-fact and, more importantly, notice to the third parties who rely on it — the land office, the bank, the counterparty — because a good-faith third party without notice may still be protected.

Marriage requires both parties to declare their intention in person before the registrar; it cannot be delegated. Consensual divorce at a district office can in limited cases be handled through a specific mandate under Department of Provincial Administration practice, with full witnesses and the registrar's discretion to test genuine consent. Ask the district office where you will file before preparing papers.

Besides the mandate itself: a certificate of incorporation issued within the last six months, the list of directors, and a board resolution approving the delegation. The whole bundle is legalised abroad by the same route as the mandate, translated into Thai and the translation certified by the Department of Consular Affairs, before filing with the Department of Business Development or another receiving authority.

As a rule the excess act does not bind the principal unless it is ratified afterwards, or unless apparent-authority principles apply because the principal held the person out in a way that led a good-faith third party reasonably to believe the authority existed. The practical defence is a narrow, specific scope, an expiry date, an express ban on substitution, and a bar on receiving money where that is not needed.

Only where the original mandate expressly allows it, or where the agency rules permit it out of necessity. Thai authorities scrutinise substitution closely and generally want to see the original chain of documents together. If you do not want substitution, say so in writing in the document.

Thai authorities work from the Thai text. A single bilingual instrument helps a foreign principal understand what is being signed and reduces later disputes. Include a clause stating which language prevails if the versions conflict. A document drafted only in a foreign language still needs a certified Thai translation before filing.

A petition to appoint an estate administrator must come from an heir or an interested person, but an heir abroad can authorise a lawyer to file and conduct the proceedings, together with consent letters from the other heirs. Documents signed abroad follow the usual legalisation and translation route. Transfers after the court order are then carried out by the court-appointed administrator.

The one that matches the passport or ID card used for identification. If your signature has changed, sign in both the old and new styles with a notary's or certifying lawyer's note. Officials frequently reject documents where the spelling of a name differs from the passport by even one letter.

No statutory expiry exists, but receiving bodies set internal limits. Land offices and many banks want an instrument signed within the last three to six months. The safe approach is to state an expiry date in the document itself and confirm the receiving body's rule before sending papers across borders, because re-executing abroad takes weeks.

Yes. The Revenue Department has its own mandate form for filing, correspondence and collecting refunds. Stamp duty applies as for any power of attorney, and certified copies of both parties' ID or passport are attached. Where a refund cheque names the taxpayer, the bank may require further documents before crediting the representative's account.

From 28 February 2027 public documents issued in a member state will carry a single apostille instead of chained legalisation at a Thai mission, which shortens the timeline considerably. Three things do not change: the notarial certification of the signature comes first, a certified Thai translation is still needed, and the content must still match what the receiving authority requires. Until then, use the embassy route.

Check five points in order: names and identity numbers exactly as in the passport; a scope tied to a named transaction and identifiable asset; place and date of signing present; no blanks that could be completed later; and a certification format matching what the receiving authority publishes. Ask the receiving authority to approve the draft before it is signed before a notary, because any change after certification restarts the whole chain.

A minor needs the consent of the legal representative for significant transactions, and disposing of a minor's immovable property requires court permission. A person adjudged incompetent cannot give a mandate; the guardian acts within the limits set by law and, in some cases, with court approval. The land registrar will ask to see the court order.

Use the mandate form attached to the department's registration application and list the exact filings delegated — changing directors, increasing capital, moving the registered office. The principal must be a director with binding authority per the company affidavit, stamp duty must be paid, and certified copies of ID or passport attached.

The Electronic Transactions Act recognises reliable electronic signatures, but in practice land offices, district offices and many embassies still ask for the paper original with a wet signature and certification seals. Ask the receiving body first; where only paper is accepted, allow time for international courier.

Ask the officer to state the reason in writing or point to the exact defect, keep a copy of everything filed, and fix only that point so the certification chain does not have to be repeated in full. Where the wording of an already-certified mandate must change, execute and certify a fresh original; never erase or amend by pen, which invalidates the document.

Not immediately in most cases. The signature is normally certified by a notary public or a Thai consular officer abroad, then the document is translated into Thai and legalized by the Legalization Division of the Department of Consular Affairs before it is presented to the Land Office. For sale or mortgage transactions officers usually expect wording that matches the official Tor Dor 21 form and an exact title deed number. Confirm the document list with the specific district Land Office before shipping papers internationally, because local practice varies.

The Apostille Convention enters into force for Thailand on 28 February 2027. After that date documents issued in member states carry a single Apostille certificate instead of multiple embassy legalization layers, which shortens the chain and makes timing more predictable. Thai translation and wording review remain necessary because the receiving authority still reads the Thai text. For documents prepared before that date, ask the receiving office whether the earlier format is still accepted.

As specific as possible. Broad wording such as to do anything on my behalf is often rejected and creates real risk of misuse. Name the exact transaction, the title deed or vehicle registration number, the counterparty, any maximum amount, and an end date. Acts beyond the stated scope generally do not bind the principal unless later ratified, so a narrow scope protects both sides and speeds up counter checks.

Yes. Instrument 7 of the Stamp Duty Schedule administered by the Revenue Department applies to powers of attorney, with different small fixed amounts depending on whether one person is appointed for a single act, one person for repeated acts, or several persons. Check the current rate before filing, because insufficient stamping can force on-the-spot payment plus a surcharge and delay a scheduled transfer appointment.

Only if the original document expressly permits sub-delegation. Without that clause the appointed person cannot appoint a substitute and the substitute's acts may not bind you. Where sub-delegation is allowed, the original instrument must be produced together with the sub-power, and the sub-power cannot be wider in scope than the original. Thai authorities examine this point carefully because it is a common route for misuse.

Prepare a written revocation, deliver it to the attorney-in-fact by a method that proves receipt such as registered mail, and keep the evidence. Then notify every organization that might rely on the old document, for example the Land Office, your bank, or the Department of Business Development, so a third party acting in good faith does not continue to treat the appointment as valid. If you suspect misuse, consult a Thai lawyer about filing a police report as a record.

Each bank sets its own form and conditions, and many accept only their own document signed in front of staff. When the principal is abroad, the usual route is to sign before a Thai consular officer or a notary public, then have the document translated into Thai and legalized at the Department of Consular Affairs before filing. Prepare identification for both parties, the account details and a power of attorney with a clearly limited scope. Overly broad authority is frequently refused, so ask the branch that holds the account before drafting.

Yes. State clearly which return, which tax year, and whether the attorney may also receive a refund. You will normally need the power of attorney with stamp duty affixed under the Revenue Code stamp duty schedule, certified copies of both parties' identification, and the supporting filing documents. If the authority to collect a refund is omitted, officials will not release it to the attorney, and insufficient stamp duty weakens the document's evidential value.

Evidence that the signatory can bind the company: a recent certificate of incorporation or company extract, the board resolution or minutes approving the appointment, and specimen signatures. The signature is notarized in the issuing country, authenticated by the local authority and the Royal Thai Embassy, then translated into Thai and legalized in Bangkok. Ensure the company name and registration number match on every document, and that the resolution is dated no later than the power of attorney itself.

Revoke in writing, identifying the document and date, notify the attorney, and also notify third parties such as the Land Office, banks or counterparties, because acts done with a good-faith third party may still bind the principal under the agency rules of the Civil and Commercial Code. Send the notice with proof of receipt, keep the acknowledgement, and ask for the original document back. Verbal revocation is very hard to prove if a dispute follows.

According to HCCH, the 1961 Apostille Convention enters into force for Thailand on 28 February 2027, which will let documents moving between member states rely on a single apostille certificate instead of a multi-layer chain in many cases. Until then the existing route applies: certification at source, embassy authentication, then legalization in Thailand. Non-member countries will keep the old chain, and Thai receiving offices will still normally require a certified Thai translation. Confirm current practice with the Department of Consular Affairs before you start.

Yes, and that review is where most delays are avoided. We compare your actual objective with the form the receiving office uses, calibrate the scope so it is neither dangerously broad nor unusable, check stamp duty, the number of originals, witnesses and translation requirements, then sequence the cross-border certification so it completes in one round. Our team has more than 15 years of experience with land, corporate, litigation and consular files. Send us the draft or simply describe your goal and we will map the steps before you sign.

Land Office registrations use the Department of Lands' own power of attorney form, not a general POA. Prepare the completed form with no blank spaces, the original title deed, ID or passport and house registration of both principal and attorney, with certified copies. State exactly what is delegated — sale, mortgage or transfer of a specific plot — sign before two witnesses, and if signed abroad, have it notarised, legalised by the Thai embassy and certified by the Department of Consular Affairs. The most common causes of rejection are blank spaces left in the form, a wrong title deed number, or a name spelt differently from the deed. We check the form and the certification chain before filing.

Yes. Under the Revenue Code's stamp duty schedule, a power of attorney is a dutiable instrument, with a lower rate for appointing one or more attorneys to act on a single occasion and a higher charge where the attorney may act repeatedly or where several attorneys act separately. Confirm the current rate with the Revenue Department or the receiving office before affixing stamps. Missing or insufficient stamps do not automatically void the instrument in civil terms, but they affect admissibility in court and can attract a surcharge, so affix and cancel the stamps correctly from the start.

Yes — filing, claiming refunds, receiving correspondence and giving statements can all be delegated, but list the scope item by item: which tax year, whether the attorney may receive refund cheques, and how far they may give statements on your behalf. You will need the stamped power of attorney, certified copies of both parties' ID or passport, and the return's supporting documents. If a refund is involved, the authority to receive funds must be stated expressly or the officer will not release it. Keep the authority narrow and add an expiry date.

No. Under the Civil and Commercial Code, agency terminates on the principal's death, incapacity or bankruptcy, so the document cannot be used afterwards and registries will refuse it once they know. The correct route is succession: apply to the court for an estate administrator, who then acts for the estate. You will need the death certificate, the deceased's house registration, evidence of the assets and a family tree. Continuing to use the old power of attorney can amount to a criminal offence. We help sequence cross-border estate paperwork.

Only where the original document expressly grants the power to delegate; otherwise the attorney may not appoint a substitute except in the limited situations the law allows. Draft it with wording that permits appointing a substitute for the listed acts, and cap both scope and duration. When filing, submit the original or a certified copy of the first document, the substitute document, and identification for everyone involved. Land Offices and banks apply strict practice here, so confirm with the receiving office before signing.

The standard sequence is: draft to the receiving country's requirements, sign before a Notarial Services Attorney registered with the Lawyers Council of Thailand, obtain legalisation from the Department of Consular Affairs (Legalisation Division), then, if still required, certification by that country's embassy in Thailand. Countries in the Apostille Convention accept an apostille instead of embassy legalisation only when the issuing country is also a party; Thailand's accession is still in progress, so the two-step legalisation route remains the norm. Ask the receiving party for their requirements in writing before you start so nothing has to be redone.

It can be drafted that way, but receiving authorities usually prefer a document limited to one purpose. The Thai Land Department uses its own forms for transfers, banks use their internal templates, and courts expect wording that names the case and the court. Powers drafted too broadly are often rejected as unclear. The safer approach is a separate instrument per authority, or a master document listing each power as a numbered clause with scope, start date, end date, and whether delegation is allowed.

Only if the instrument expressly allows sub-delegation. Without that clause most authorities refuse the substitute and the acts may not bind the grantor. If the appointed person may become unavailable, include a sub-delegation clause naming the permitted substitute or their qualifications, and require written notice to the grantor each time it is used.

Prepare a written revocation identifying the original document by date or reference, the parties, and the effective date. Have it certified by a Notarial Services Attorney, then processed by the Department of Consular Affairs and the destination channel used for the original. Critically, notify every party holding the original, such as the bank, the foreign lawyer, or the land registry, because revocation affects third parties from the time they receive notice.

Sign before a notary public or a Thai embassy officer in that country. If the country is a Hague Apostille party, obtain an apostille from its competent authority; if not, obtain foreign ministry certification followed by Thai embassy legalization. Once in Thailand the document is translated into Thai and the translation certified by the Department of Consular Affairs before submission. Total time depends on each authority's queue.

The Land Department issues dedicated forms: T.D.21 for land and O.Ch.21 for condominium units. Complete every field without blanks, state the title deed or unit number, area, and the exact type of juristic act as recorded in the register, and attach certified copies of both parties' identity documents. A foreign grantor signing abroad must first complete international certification and Thai translation.

Evidence that the signatory can bind the company: a certificate of incorporation recent enough for the receiving authority, board minutes approving the appointment, and specimen signatures of the directors. The whole set must be certified in the country of origin and translated into Thai. The most common rejection is a company name transliterated differently from the spelling already registered with Thai authorities.

Thai law sets no fixed expiry when the document itself is silent, but receiving authorities apply their own limits, commonly three to six months from certification. Banks and foreign land registries are typically stricter. Confirm the accepted age before starting, and plan the chain so the document reaches its destination well inside that window.

Thai signature certification requires the signatory to appear in person before the certifying attorney. Video calls are useful for reviewing drafts and checking supporting papers in advance, but the signing step remains in person. Some destination countries operate their own remote online notarization systems; those are a separate regime, and the receiving authority must confirm it accepts that route before you rely on it.

Yes, and it usually reduces friction. Present the text in parallel columns or sections and state which language prevails in case of conflict. Every name, figure, and grant of authority must match exactly across both versions. Where the destination requires a translator sworn before its own courts, as several European jurisdictions do, that country's sworn translator must produce the text, and we say so plainly when it falls outside what we can certify.

As a rule the mandate ends on the grantor's death or incapacity, and continued use may have no binding effect and carries legal risk. For estate matters the route changes to court appointment of an estate administrator. Some jurisdictions offer separate instruments that survive incapacity, and those must be drafted under that country's own law.

Land Department forms require two witnesses. For documents used abroad the requirement follows the destination's law: some demand two disinterested witnesses with stated addresses, others accept notarial certification alone. The low-risk practice is to arrange two witnesses with identification available, because witnesses cannot be added later without re-executing the whole document.

Five recurring causes: name spelling that differs from the passport by even one character; authority so broad the receiving officer cannot interpret its limits; missing proof of the corporate signatory's authority; certification steps performed out of order, such as translating before the original is certified; and documents older than the accepted window. Reviewing the draft and the certification sequence before signing removes most of this risk.