Wills and Inheritance in Thailand: What Foreigners Need to Know

A separate Thai will is often useful, but it is not a universal requirement for every foreign owner. The practical test is simpler: if your family had to deal with your Thai condo, bank account and car next week, would the document they already have clearly identify those assets and give them a workable route through the Thai process?

Thailand's conflict-of-laws rules do not make a foreign will automatically worthless. The form of a will may follow the law of the testator's nationality or the law of the country where it was made. At the same time, succession to immovable property in Thailand is governed by Thai law. A home-country will can therefore be relevant while still leaving Thai-law questions about a condo, land interest or other locally registered property.

The attraction of a Thailand-specific will is usually administrative clarity. It can define the Thai asset pool, identify beneficiaries and name the person expected to deal with the estate without forcing a Thai court or registry to interpret a broad worldwide document first. Foreign death certificates, probate papers or wills may also need translation and authentication before a Thai authority will rely on them; the exact route depends on the issuing country and the authority receiving the papers.

Multiple wills need coordination, not duplication. A broad revocation clause in a later document can create an avoidable dispute over whether an earlier will was cancelled, while overlapping descriptions can leave two documents apparently covering the same asset. Cross-border estate planning is therefore a drafting exercise as much as a succession-law exercise: the documents should be reviewed together before either is signed.

Dying without a will does not mean the Thai state simply takes the estate. Thai law has an intestacy system. It recognises six classes of relatives, starting with descendants and parents and continuing through siblings, grandparents, and uncles and aunts; a surviving legal spouse also has statutory inheritance rights under separate provisions.

For married owners, the estate cannot always be identified by looking at the title or account balance alone. Marital-property rules may require part of jointly acquired property to be separated for the surviving spouse before the deceased's estate is divided. For that reason, a single percentage for “what the spouse gets” is unreliable without knowing how the asset was acquired and which other heirs survive.

The next distinction is where many cross-border estates become difficult: succession entitlement and registration are not the same task. An heir may be legally entitled to an asset while a bank, land registry or transport office still requires proof of authority, translated documents, a court-appointed estate administrator, or compliance with ownership restrictions before changing its records.

Intestacy can therefore produce a legally valid answer and still leave the family with more administration than expected. A will gives the owner more control over beneficiaries and estate administration, but it does not eliminate asset-specific rules. The practical question for a foreign owner is whether the family structure and the Thai asset list are simple enough to leave those choices entirely to the default statutory system.

Thai law recognises several ways to make a will, and the formalities are not interchangeable. BORA's guidance lists five forms: an ordinary written will, a wholly handwritten will, a public-document will, a secret will, and an oral will reserved for exceptional circumstances. Choosing a form changes what must happen at signing.

An ordinary written will is dated and signed by the testator in the simultaneous presence of at least two witnesses. A holographic will works differently: the testator must write the entire document by hand, date it and sign it. A public-document will involves the district authority and witnesses. These are statutory formalities, which is why “get it notarised” is an incomplete answer; notarisation is not a universal substitute for the requirements of the form actually being used.

Formal mistakes tend to surface at the worst possible time. A questionable amendment, an unsuitable witness arrangement, or uncertainty over which version is final may only be tested after the testator has died. A will written outside Thailand can add another evidential layer because the Thai court or authority may need translations and proof that the foreign document was properly executed.

Owners with more than one will should pay particular attention to scope and revocation language. It is possible to design one document around Thai assets and another around assets elsewhere, but the two instruments should not accidentally claim the same property or cancel each other through broad boilerplate. The correct wording depends on the laws that govern each document and the owner's circumstances.

For that reason, a generic form is a poor substitute for a coordinated estate plan when more than one country is involved. The useful preparation work is to identify the assets, family relationships and existing wills first; the drafting should then be checked by counsel who can account for the Thai formalities and the other jurisdiction, with neither document treated in isolation.

A condo is a useful example of why inheritance and registration have to be separated. A beneficiary may acquire an inheritance right, yet a foreign heir still has to fit the Condominium Act rules before ownership can remain registered in that person's name. The foreign-ownership framework and the building's position at the time of transfer matter. Where an alien heir falls outside the permitted categories, the Act contains notification and disposal rules; it does not promise permanent ownership.

Land is more restrictive and should not be reduced to the slogan that foreigners “cannot inherit.” Thai succession law can make a foreign person an heir, but the Land Code controls whether land can actually be registered and retained. Section 93 provides a specific permission route for a foreign statutory heir, subject to its conditions and land limits. A beneficiary named only by will should not assume that the same statutory-heir route applies. The relevant Land Office needs to determine the position for the parcel and the legal basis on which the heir claims it.

A bank account has a different problem: authority to deal with the account. A will identifies the intended beneficiary, but a bank may still require a Thai court order appointing an estate administrator together with the death certificate, identification and account records. Published procedures vary by bank and product, so a checklist from one institution should not be treated as a national rule. The safest planning assumption is that the original will alone may not be enough to release the funds.

Vehicles have their own registration path as well. Department of Land Transport rules distinguish inheritance under a will, transfer through a court-appointed estate administrator, and some intestate cases without an administrator. That difference affects the supporting documents and the way the transfer is processed. A vehicle should therefore be listed as a separate registered asset, not treated as if possession of the keys or registration book automatically changes legal ownership.

Company interests, insurance and digital assets can be even less uniform. Shares may be subject to corporate records and transfer restrictions; insurance may pay under the policy to a named beneficiary; digital assets combine succession rights with practical control of accounts, devices or keys. These are not variations of a bank deposit, and a clause that simply says “all other assets” may still leave the family with significant administrative work.

A useful estate inventory therefore records more than value. It links each Thai asset to its legal owner, title or account document, any co-owner or beneficiary, and the institution that must recognise the transfer after death. That is the level of detail that makes a will easier to administer without pretending that one document overrides every registry's rules.

After a death, the family usually faces a sequence of proof, not one single probate transaction. The death has to be documented, the original will located if one exists, the heirs identified, and the Thai asset list matched to evidence of ownership. A condo title, a bank account and a vehicle may all belong to the same estate while requiring completely different follow-up steps.

The next issue is authority. Some transactions require a court-appointed estate administrator before a bank or registry will act, while others may follow a different route depending on the documents and the asset. Foreign death certificates, probate orders and civil-status records can also require translation or authentication before a Thai court or agency accepts them. Once authority is established, administration becomes asset-specific again.

Inheritance tax is only one part of that process. Revenue Department guidance states that tax applies when an heir's net inheritance from a particular deceased person exceeds THB 100 million, with tax charged on the excess. The standard rate is 10%, reduced to 5% for parents and descendants. Inheritance received by the deceased's legal spouse is outside the scope of the Inheritance Tax Act. For a foreign heir, the statutory residence category and the location of inherited assets also affect the tax scope. Those rules, the taxable asset categories and any exemptions should be re-checked when the estate is actually administered.

Registration fees, court costs, document translation and taxes arising from a later sale are separate questions. Calling all of them “inheritance tax” hides the difference between a tax on receiving the estate and the cost of putting individual assets into the correct names. A modest estate can still involve court proceedings or several registries even when no inheritance tax is due.

There is no reliable universal timeline. Disputed heirs, missing originals, foreign documents or assets spread across several provinces can change the process substantially. General guidance can help a family prepare, but the actual combination of wills, family status, asset restrictions and Thai procedure needs case-specific legal review before anyone relies on it for a transfer.