Last Will and Testament in Thailand: A Practical Guide for Foreigners

Why a Thai Will is Essential for Foreigners

Planning your estate is a critical act of foresight that can save your loved ones significant time, stress, and uncertainty. If you own property in Thailand—such as real estate, bank accounts, shares, or vehicles—having a Thai will ensures your assets are distributed according to your wishes, not by the rigid and often unsuitable formulas of statutory law. This guide explains the key aspects of inheritance law, the will-drafting process, and how to avoid common pitfalls that could jeopardize your legacy.

Key Highlights

• Foreigners with assets in Thailand should prepare a separate Thai will to simplify inheritance and avoid costly complications.
• Thai law distinguishes between movable and immovable property, with different inheritance rules for each.
• Without a will, a rigid statutory hierarchy determines asset distribution, which may not align with your wishes.
• The probate court process is mandatory for all estates, even with a valid will.
• Inheritance tax applies to estates over 100 million THB per beneficiary.
• Consulting a lawyer is essential for complex or multi-jurisdictional estates.

Do You Need a Will in Thailand? The Problem with Relying on a Foreign Will

If you own property in Thailand, a local Thai will is strongly recommended. While a foreign will is, in principle, legally recognized, relying on it creates a burdensome, expensive, and time-consuming ordeal for your heirs.

This is due to what can be called the “Two-Court Problem.” To enforce a foreign will in Thailand, your heirs must navigate a complex, multi-stage process:

1. Home Country Validation: The will must first be officially validated by a court or other competent authority (such as a public notary in many civil law jurisdictions) in its country of origin. This process results in an official document—like a Grant of Probate or a Certificate of Inheritance—that legally confirms the will’s legitimacy.
2. Legalization and Translation: This official document, along with the will and the death certificate, must all be officially translated into Thai. These documents must then be notarized and undergo consular legalization by the Thai Embassy in the home country or the Ministry of Foreign Affairs in Thailand.
3. Thai Court Proceedings: This entire package of documents is then submitted to a Thai court. Crucially, a Thai court does not simply approve the foreign order; foreign judgments are treated as evidence only. Your heirs must initiate a new, separate probate case in Thailand to have an estate administrator appointed by the court,.

This duplication of official proceedings in two different countries is a significant drain on the estate’s time and resources, often taking many months or even years to resolve. A Thai-specific will, with its jurisdiction explicitly limited to your assets in Thailand, bypasses this entire convoluted process, ensuring a smoother inheritance and preventing unnecessary stress for your heirs.

Inheritance Rules Without a Will (Intestate Succession)

When a person dies without a valid will, their assets are distributed according to the strict statutory hierarchy of intestate succession under the Civil and Commercial Code. This system prioritizes blood relatives and makes no provision for unmarried partners or unadopted step-children, which can lead to unintended outcomes for many foreigners.

Under Section 1629 of the Civil and Commercial Code, there are six classes of statutory heirs who inherit in a fixed order of priority.

Heir Classes (Order of Priority)

1. Descendants (children, grandchildren, etc.)
2. Parents
3. Full-blood siblings
4. Half-blood siblings
5. Grandparents
6. Aunts and uncles

The rule of priority is absolute: if a living heir exists in a higher class, all lower classes are excluded. The sole exception involves parents (Class 2), who inherit equally alongside descendants (Class 1) if both classes survive the deceased. If no living relatives can be found in any of the six classes, the entire estate devolves to the State of Thailand.   

Rights of the Surviving Spouse

A legally married spouse holds a special position as a statutory heir. The distribution process involves two distinct steps:

Step 1: Division of Marital Property (Sin Somros) Before any inheritance is calculated, the common property acquired during the marriage (Sin Somros) must be divided. The surviving spouse is automatically entitled to one-half (50%) of this marital property. The deceased’s remaining half, along with any of their separate personal property, then forms the estate to be distributed among the heirs.   

Step 2: Inheritance from the Estate After the marital property is divided, the surviving spouse also inherits a share of the deceased’s estate alongside the other statutory heirs, as stipulated by Section 1635:

• With Children (First-Class Heirs): The spouse inherits a share equal to that of a child.
• With Parents or Full-Blood Siblings (Class 2 or 3): The spouse receives half of the estate.
• With Half-Blood Siblings, Grandparents, or Aunts/Uncles (Class 4, 5, or 6): The spouse inherits two-thirds of the estate.
• No Other Heirs: The spouse inherits the entire estate.

This two-step process ensures the spouse’s rights to marital property are secured before the inheritance distribution takes place.

Jurisdiction Over Assets: Movable vs. Immovable Property

Thai law, specifically the Conflict of Laws Act, determines which country’s legal framework governs the inheritance of different asset types. This distinction is crucial for effective estate planning.

• Immovable Property (Real Estate): This category includes land, condominiums, and structures. Under Section 37 of the Act, the succession of immovable property is governed exclusively by the law of the location where the property is situated (lex situs). For any real estate in Thailand, Thai inheritance law is absolute. This rule cannot be overridden by a foreign will’s choice-of-law clause, as Thailand is not a party to international succession treaties like the Hague Convention on Succession.
     
• Movable Property (Personal Assets): This category includes bank accounts, company shares, vehicles, and other personal valuables. Under Section 38 of the Act, the inheritance of movable property is governed by the law of the deceased’s domicile at the time of death (lex domicilii). This means if a foreigner is legally domiciled in Thailand, Thai law will govern their movable assets. If their domicile remains in their home country, the laws of that country will apply to their movable assets, even those located in Thailand.   

This legal distinction underscores the need for a carefully structured will. A Thai will is the most direct and effective instrument for disposing of immovable property in accordance with Thai law, while also providing clear instructions for movable assets to prevent potential jurisdictional conflicts.

Inheriting Assets in Thailand: A Detailed Guide for Foreigners

A foreigner can legally inherit assets in Thailand, but their right to own them long-term is subject to strict, asset-specific rules. Understanding these distinctions is critical for effective estate planning.

Freehold Land: Inheritance Without Ownership Rights

A foreigner may inherit land as a statutory heir but, under Section 93 of the Land Code, cannot register ownership without permission from the Minister of Interior. Since this permission is rarely granted, the foreign heir is legally obligated to sell the land within one year from the date of acquisition. If the heir fails to do so, the Director-General of the Land Department is empowered to forcibly auction the property and remit the proceeds (minus fees) to the heir.

Planning Tip: To avoid a forced sale, consider alternative structures like a 30-year leasehold combined with a right of superficies (an inheritable right to own a building on the land).

Condominium Units: Conditional Foreign Ownership

The rules for condominiums are more liberal but conditional. Under the Condominium Act B.E. 2522 (1979), a foreigner can inherit and register ownership of a unit in their own name, provided they meet the legal requirements.

• 49% Foreign Ownership Quota: The acquisition must not cause total foreign ownership in the building to exceed 49% of the total unit floor area. If the quota is already full, the foreign heir cannot register ownership.
• Mandatory Sale if Ineligible: If the heir does not qualify or the quota is exceeded, they must sell the unit within one year of acquisition.
• 60-Day Notification Requirement: A foreign heir must provide written notice to the competent official at the Land Office within 60 days of acquiring the unit through inheritance.
• Proof of Foreign Exchange: Eligibility hinges on the heir meeting a qualifying ground under Section 19 of the Condominium Act (e.g., foreign funds remitted, permanent residence, BOI/Amity status). Evidence of remittance is typically relevant to purchases; for inheritances, practice varies by Land Office—confirm locally.

Read more here:

How Foreigners Can Inherit Condominium Units in Thailand

Leasehold: Only Inheritable with Explicit Succession Clauses

A lease is a personal contract right, not a tangible asset. Under Thai law, a standard lease agreement terminates automatically upon the death of the lessee and is not inheritable by default.

• The Exception: The only way for a leasehold right to pass to an heir is if the original lease agreement contains a specific, clearly worded, and legally enforceable succession clause.
• Supreme Court Guidance (Judgment 11058/2559): The Supreme Court has affirmed that a lease can be inherited if the contract explicitly permits transfer or subleasing, as this indicates the right is not strictly personal to the lessee.

Planning Strategies: Ensure your lease explicitly permits inheritance by heirs. Naming your intended heir as a co-lessee is another strategy, as the lease continues for the surviving co-lessee.

Learn more about leasehold rules and inheritance here:

Leasehold in Thailand: What Foreigners Need to Know

Company Shares: Indirect Asset Ownership

Many foreigners hold assets, such as property, through a Thai limited company. In this scenario, heirs do not inherit the company’s assets directly. Instead, they inherit the deceased’s shares in that company.

To gain control, heirs must:

1. Obtain a court order through the probate process confirming their inheritance rights.
2. Formally transfer the inherited shares into their names at the Ministry of Commerce’s Department of Business Development (DBD).
3. If the deceased was the sole director, the new shareholders must convene a formal shareholder meeting to appoint a new director.

• Foreign Business Act Compliance: If the share transfer would cause the company to exceed 49% foreign ownership, the shares may need to be sold to Thai nationals, particularly if the company holds land or engages in restricted business activities.
• Nominee Shareholder Warning: If the company structure involves nominee Thai shareholders (a practice under increasing legal scrutiny), the estate distribution can face significant delays, disputes, and legal challenges.

Digital Assets: Cryptocurrency and Online Accounts

With the rise of digital wealth, it is essential to plan for assets like cryptocurrency. Unlike traditional assets, crypto can be permanently lost if heirs do not have the private keys or passwords.

• The Challenge: Standard wills often fail to address the secure transfer of digital assets. Listing passwords directly in a will exposes them during public probate proceedings.
• The Solution: Your will should include specific provisions for digital assets, referencing a secure, separate mechanism—such as a password manager with emergency access or a sealed letter held by your executor—that allows your executor to gain access without compromising security.
• Tax Treatment: Thai inheritance tax rules apply to digital assets exceeding the 100 million THB threshold.

Summary Comparison Table

Forms of Wills Under Thai Law

Thai law, under the Civil and Commercial Code, recognizes several forms of wills. While all are legally valid if executed correctly, only one is broadly practical for most foreigners.

1. Ordinary Written Will (Section 1656): This is the most common, practical, and highly recommended form for foreigners. It must be in writing, dated, and signed by the testator in the presence of at least two witnesses who are present at the same time and who also sign to certify the testator’s signature.   
2. Holograph Will (Section 1657): This form requires no witnesses but has a strict condition: the entire text of the will, including the date and signature, must be written in the testator’s own handwriting. This is risky for foreigners due to potential challenges with handwriting or language ambiguity.   
3. Public Will (Section 1658): The testator declares their wishes before a district officer (Amphoe) at the local district office, in the presence of two witnesses. The officer records and reads the statement, then the testator, both witnesses, and the officer sign. Proceedings are conducted in Thai; if the testator isn’t fluent, an approved interpreter is typically required—so this format is often impractical for many foreigners.
4. Secret Will (Section 1660): The testator signs and seals a completed will and then presents the sealed document to a district official and witnesses. Like the public will, this process involves Thai officials and is generally unsuitable for non-Thai speakers.   
5. Verbal Will (Section 1663): This is an emergency provision, permissible only under exceptional circumstances where a person is in imminent danger of death and cannot make a will in any of the other prescribed forms.   

What to Include in a Thai Will

For clarity and legal validity, include the following:

• Date and Location: When and where the will is created.
• Testator’s Details: Full name, date of birth, address, nationality, passport number.   
• Heirs’ Details: Names, birth dates, addresses, and relationships.   
• Executors: Designate a responsible individual to administer the estate.
• Witnesses’ Details: Full names and identification (ID or passport numbers). Witness eligibility check: Ensure witnesses are not beneficiaries (nor the spouse of the writer/witness) and meet CCC s.1670 capacity requirements.  
• Assets and Liabilities: List all property, bank accounts, valuables, and debts.
• Funeral Preferences: Optional but helpful for clarity.   
• Guardianship Appointments: If minor children are involved, appoint guardians.   
• Jurisdiction Clause: Clarify that the will applies only to property in Thailand.

Pro Tip: Drafting your will in both Thai and English ensures clarity for all parties during legal proceedings. The Thai text will be the authoritative version used by the courts.   

The Critical Role of the Executor: A Note on Physical Presence

Choosing an executor is a crucial logistical decision.
Thai probate courts typically require the petitioner/executor to attend in person to give evidence. Remote appearances are rare and at the court’s discretion. Appointing an executor based overseas who is unable or unwilling to travel can bring the entire process to a standstill. It is highly advisable to also name a reliable, preferably Thai-based, substitute executor in the will.

Executing a Will in Thailand

Although registration is not mandatory, follow these steps:

1. Sign and Witness Properly: The testator and two witnesses must sign the will in each other’s presence.
   • Witness rules (CCC ss. 1653, 1670). Do not use a beneficiary—or the spouse of the will writer/witness—as a witness. Under CCC s.1653, any legacy to a person who writes or witnesses the will (or their spouse) is void. Separately, CCC s.1670 disqualifies minors, persons of unsound mind/quasi-incompetent, and those who are deaf, dumb, or blind from acting as witnesses.  
2. Secure Storage and Notification: Keep the original signed will in a secure location, such as a safe deposit box or with your lawyer. Crucially, inform your executor of the will’s location so it can be accessed when needed.   

The Mandatory Probate Process in Thailand

Heirs must apply to a Thai court to distribute assets, even if a will exists. A will alone is not sufficient to transfer assets; the court must first issue an order appointing an executor.   

Key Steps in the Probate Process:

1. File a Petition: An heir or executor files a petition with the competent Thai Civil Court.   
2. Submit Documents: The petition must be accompanied by required documents, including the original will, death certificate, and identification for all parties. Documents issued abroad must be translated, legalized, and notarized for Thai court acceptance.
3. Court Hearing: The court schedules a hearing. The proposed executor must attend in person.
4. Appeal Window and Final Order: After the court appoints the executor, there is a mandatory 30-day appeal window. Once this period passes without objection, the court issues a Certificate of No Appeal or Order of Final Judgment. This is the final document required by banks and the Land Department to transfer assets.

A straightforward, uncontested probate case typically takes 4–8 months to complete.   

Thai Inheritance Tax

Applies to estates exceeding 100 million THB per beneficiary:

• 5% for direct descendants/ascendants.
• 10% for others.
• Surviving spouses are exempt.

Common Pitfalls to Avoid

• Using a foreign will without considering the costly and lengthy Thai court process.   
• Failing to properly legalize and translate foreign documents.   
• Not updating the will after major life changes.   
• Using an ineligible witness (e.g., a beneficiary or the spouse of the writer/witness), which voids that gift under CCC s.1653 and may complicate probate.
• Assuming a leasehold is automatically inheritable without a succession clause.   
• Not appointing an executor who is able to physically attend court in Thailand.

Frequently Asked Questions (FAQs)

1. Can I write my Thai will in English? Yes, but a Thai translation is required for legal proceedings. A bilingual will is the best practice.
2. Do I need a separate will for my Thai assets? Yes, having a separate Thai will avoids the significant delays and legal costs associated with validating a foreign will.   
3. Can I disinherit someone in my Thai will? Yes, Thailand does not enforce forced heirship laws.   
4. How often should I update my Thai will? Update your will after major life events or every few years.   
5. Can I appoint a foreign executor? Yes, but they must be able to travel to Thailand to attend court hearings in person. It is crucial to confirm their ability to do so and to name a local substitute as a backup.

Secure Your Legacy with a Legally Sound Thai Will

The complexities of Thai inheritance law mean that errors in drafting or executing a will can have serious consequences, potentially invalidating your final wishes and creating significant burdens for your heirs.   

Professional legal guidance is the most effective way to ensure your will is fully compliant with Thai law, protecting your assets and providing security for your family.   

Contact us for a consultation.

Disclaimer: This article was reviewed by our attorneys licensed in Thailand. It is provided for general informationonly and does not constitute legal advice or create an attorney–client relationship. Binding advice is available only as part of an individual engagement. While prepared with care, no warranty is made as to timeliness, completeness, or accuracy.