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Bilingual Thai-English will: how many days it takes

A will covering Thai assets removes the guesswork about who inherits and who administers. Thai law recognises several forms, each with its own execution requirements, and a will that fails the formalities of its chosen form can be challenged after death, when it can no longer be corrected.

How this case runs end to end

Decide the scope, choose the form of will, prepare the text with the asset schedule and the administrator named, execute it with the witnesses the form requires, store the original safely and review it whenever assets or family circumstances change.

Stage-by-stage timeline

StageWorkOwnerWindow
CompletionCollect the order or the registered title and distribute to the heirsIVCAfter the order or registration
ScopingMap the heirs, the Thai assets and the receiving offices involvedIVCOn enquiry
Document collectionCivil-status records, title deeds, bank and share evidenceClient1–3 weeks
LegalisationApostille or embassy certification abroad, then certified Thai translationIVC and clientDepends on country
FilingCourt petition, or the land office / Revenue filing as the matter requiresIVCPer court or office calendar
Hearing or registrationAttend the hearing or the Land Department appointmentClient and IVCAs scheduled

What to prepare

  • The deceased's death certificate, house registration and identity documents
  • Evidence of the family relationship: marriage, birth or family registration records
  • The will, if one exists, in the form it was executed
  • A schedule of Thai assets: title deeds, condominium unit details, bank accounts, shares and vehicles
  • Identity documents and current addresses of every statutory heir
  • Certified translations, plus apostille or embassy certification for anything issued abroad
  • A power of attorney where an heir cannot attend in person

What "Bilingual Thai-English will: how many days it takes" actually involves

This question sits within wills and estate planning in Thailand. The authority or standard that governs it directly is the Civil and Commercial Code, and the district office for the official forms of will, and every case is assessed against the rules in force on the day of submission. IVC prepares the file, checks internal consistency and coordinates with the receiving office; we are not a government body and we never guarantee how an authority will decide.

Assets that pass outside the estate, and property held through a lease or usufruct, must be treated separately.

A later will revokes an earlier one only to the extent stated, so revocation clauses must be explicit.

Each form has its own execution rules; witnesses who are beneficiaries can invalidate the disposition made to them.

Rules and requirements to settle before you start

A will that covers Thai assets should not silently revoke a foreign will, and vice versa — scope both explicitly.

Naming the administrator in the will shortens the later court process because the appointment is uncontested.

A bilingual will needs a controlling-language clause, otherwise a translation dispute becomes an inheritance dispute.

Jurisdiction follows the deceased's domicile in Thailand, or the location of the assets when there was no Thai domicile.

An heir who objects can be heard at the hearing, which is why the heir list must be complete and accurate from the start.

The mistakes that cost the most time

The most costly pattern is starting with the asset instead of the authority. Heirs contact the bank or the land office first, are told to come back with a court order, and only then begin assembling civil-status evidence from another country — with legalisation, translation and postage added to a timeline that was already tight.

The second is inconsistency across documents. The passport, the title deed, the marriage record and the death certificate are read side by side, and a single spelling or date difference stops the file until an affidavit of one and the same person is produced and legalised in turn.

Why files are delayed or returned

  • Witnesses who are also beneficiaries
  • A will that does not meet the formalities of its chosen form
  • Conflicting revocation clauses between a Thai and a foreign will
  • An asset schedule that no longer matches reality
  • A power of attorney that does not cover the specific act
  • An asset schedule that does not match the registries

Key terms in wills and estate planning in Thailand

FET
The bank evidence that funds were remitted into Thailand in foreign currency.
Statutory heir
A person entitled to inherit by law in the absence of, or alongside, a will.
Inheritance tax threshold
The value each individual heir may receive before inheritance tax applies.
Apostille
A single certificate that replaces embassy legalisation between Hague Convention member states.
Usufruct
A registered right to use and take the fruits of land owned by someone else.
Foreign quota
The share of a condominium building's total unit area that may be foreign-owned.
Estate administrator
The person appointed by court order, or named in a will, to collect and distribute the estate.

Official sources

Scope and limitations

IVC is a private consulting firm providing document preparation, translation, legalisation and coordination for inheritance and property matters, working with licensed Thai counsel where court representation is required. This page is general information, not legal advice on your case, and it is not issued by any Thai authority. Rules and thresholds change — confirm the current position before acting. Scope and fees are discussed after a review; please contact our staff by phone, LINE or email.

Information as of August 2026

Need an answer for your own case? Talk to our staff by phone, LINE or email.