Estate, heirs and administrator mandates

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, 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".

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 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.