Legal Guardianship in Thailand

Three different appointments that English calls guardianship

Thai law separates what English collapses into one word. A guardian under sections 1585 and following of the Civil and Commercial Code is appointed for a minor who has no parents or whose parents have been deprived of parental power. A guardian of an incompetent person is appointed where the court has adjudged an adult incompetent by reason of unsoundness of mind. A curator is appointed for a quasi-incompetent person, an adult whose capacity is impaired but not absent, and the curator's role is to consent to specified acts rather than to act in place of the person.

Choosing the wrong application is not a technicality. The court's order defines what the appointee may do, and a bank or land office will read the order literally. A curator's consent does not authorise a sale that requires a guardian's authority with the court's approval, and an order drafted for a minor's guardianship will not help a family managing a parent's dementia.

Only the court appoints. There is no administrative registration of guardianship at a district office, and a family agreement recording who will look after a child or an elderly relative has no effect against third parties, however sincerely it was made.

What a guardian may and may not do alone

• The guardian manages the ward's property with the care of a person of ordinary prudence and must keep accounts, which the court may call for.
• Significant dealings with the ward's property — sale, mortgage, exchange or long lease of immovable property, and other acts listed in the Code — require prior approval of the court, not merely the guardian's judgement.
• The guardian may not, in general, make gifts of the ward's property or enter transactions in which the guardian's own interest conflicts with the ward's.
• An inventory of the ward's property must be prepared shortly after appointment; failure to do so is one of the grounds on which an appointment is later challenged.
• The appointment ends on the ward's majority, on the ward's death, on revocation of the incompetency order, or on removal by the court for cause.

The application, step by step

1. Establish standing and jurisdiction: Applications are made to the court with jurisdiction over the ward's domicile. Relatives within the degrees recognised by the Code, and the public prosecutor, may apply.
2. Evidence the condition or the vacancy in parental power: For an incompetency application, medical evidence from a qualified physician is central. For a minor, evidence that both parents are deceased or deprived of parental power.
3. Identify and evidence the ward's property: Land title documents, bank accounts, shareholdings and liabilities. The court will not appoint into an undefined estate without asking questions.
4. Propose the appointee and address conflicts: The proposed guardian's suitability, and full disclosure of any competing interest, particularly where the appointee is also an expected heir.
5. Obtain the order and register where required: Certified copies of the order are then presented to banks, the land office and any other institution that must recognise the authority.

Foreign families and cross-border wards

A foreign national may be appointed, but the court considers practicality, and an appointee who does not reside in Thailand faces obvious questions about supervision of the ward and management of Thai-situs property. Where the family is spread across countries, a workable answer is often a Thailand-resident guardian for day-to-day management with the court's approval mechanism providing the control that the distant family would otherwise want to exercise directly.

A guardianship or power of attorney created abroad does not operate automatically in Thailand. A foreign power of attorney can be used for defined transactions if it is properly executed, legalised in the country of origin and translated with certification, but it does not substitute for a Thai guardianship order where the person lacks capacity, precisely because capacity is what the foreign document assumes. Until 28 February 2027, legalisation for Thai use runs through the Thai embassy or consulate abroad rather than by apostille.

Where a Thai order will be relied on abroad — to deal with the ward's assets in another country — the order and its certified translation are legalised outward through the Department of Consular Affairs and the destination embassy in Bangkok. We prepare the outbound set at the same time as the inbound one because reopening a file months later to obtain certified copies is slower than doing both at once.

Common mistakes and how we avoid them

More questions we are asked

How long does an appointment take?

It depends on whether the application is opposed and on the court's list. Medical evidence and a clear property schedule prepared before filing are what shorten it most.

Can two people be appointed jointly?

The court can shape the appointment, including joint arrangements, but joint appointments create deadlock risk. Where family relations are strained we usually propose a single appointee with defined reporting.

Does the guardian get paid?

Remuneration is a matter for the court on the facts, including the size of the estate and the work involved. It should be raised in the application rather than assumed.

Will a Thai bank accept the order?

Banks accept certified copies of the order but each has its own internal verification. We provide the certified copies and the translation set that institutions ask for.

Can a guardianship be changed later?

Yes. The court may remove or replace a guardian for cause, and an interested relative or the public prosecutor may apply.