When discussing wealth preservation and succession planning, many individuals focus on investments, insurance arrangements, or tax planning. However, one of the most important legal instruments is often overlooked: the will.

In Thailand, wills are frequently perceived as documents intended only for elderly individuals or those possessing substantial wealth. From a legal perspective, however, a will is an essential planning tool for any person who wishes to determine the future disposition of his or her assets upon death, regardless of the size of the estate.

Under the Thai Civil and Commercial Code, a will constitutes a person’s final expression of intention concerning the management and distribution of his or her property, rights, and certain obligations upon death. A properly executed will ensures that the testator’s wishes are legally recognized and enforceable.

Where an individual dies intestate, the deceased’s estate will be distributed among statutory heirs in accordance with the order and proportions prescribed by law. Such statutory distribution may not reflect the deceased’s actual intentions.

For example, an individual may wish to leave a portion of his or her estate to a child who has acted as caregiver during the latter years of life, or may intend to benefit individuals who are not statutory heirs, such as an unmarried life partner, grandchildren, distant relatives, or charitable organizations. In the absence of a valid will, such intentions may not be fulfilled.

Moreover, wills play a significant role in minimizing family disputes. In practice, inheritance disputes remain among the most common forms of litigation before Thai courts, particularly in families holding diverse assets such as land, residential properties, commercial buildings, shares, bank deposits, or family businesses. The absence of a will, or the existence of an ambiguous or improperly drafted will, may lead to prolonged disputes among heirs, sometimes lasting for years and causing irreparable damage to family relationships.

Thai law recognizes several forms of wills, including ordinary written wills, holographic wills, public wills, and special wills executed under exceptional circumstances. Regardless of the form chosen, strict compliance with statutory requirements is essential. Failure to satisfy material legal requirements—such as signatures, witnesses, or prescribed formalities—may render the will void.

Another frequently overlooked aspect is the appointment of an executor. Through a will, a testator may designate a trusted individual to administer the estate following death. Selecting a competent and reliable executor can significantly facilitate the collection of assets, settlement of liabilities, and distribution of the estate to beneficiaries.

For business owners and shareholders, the preparation of a will is particularly important. Shares in a company form part of a deceased person’s estate. Without proper succession planning, issues may arise concerning management succession, control of the business, and disputes between heirs and existing shareholders, all of which may directly affect business continuity.

Globally, the concept of estate planning has gained increasing prominence as individuals recognize that succession planning is not merely about preparing for death, but rather about managing risks and protecting loved ones in circumstances where one can no longer make decisions personally.

Accordingly, a will is far more than a legal document. It is a reflection of responsibility and concern for one’s family and the assets accumulated throughout a lifetime. A properly prepared will can reduce uncertainty, prevent disputes, and ensure that assets are transferred to the intended beneficiaries in accordance with the testator’s wishes.

How Many Types of Wills Are Recognized Under Thai Law?

Although many people understand that a will is a legal instrument used to determine the distribution of assets upon death, fewer are aware that Thai law recognizes several different forms of wills, each subject to specific legal requirements. Failure to comply with those requirements may render the will invalid and unenforceable.

Under the Thai Civil and Commercial Code, five principal forms of wills are recognized.

1. Ordinary Written Will

This is the most commonly used form of will in Thailand.

The testator must prepare a written document, specify the date of execution, and sign the document in the presence of at least two witnesses simultaneously. The witnesses must then sign the will to certify the testator’s signature.

While this form is relatively simple and cost-effective, strict compliance with legal formalities is required. Even minor defects may invalidate the entire will.

2. Holographic Will

A holographic will must be entirely handwritten by the testator and must include the date and the testator’s signature.

The principal advantage of this form is that witnesses are not required at the time of execution. However, because there are no witnesses, disputes often arise concerning the authenticity of the handwriting or the mental capacity of the testator at the time the will was prepared.

3. Public Will

A public will is executed before a district officer or other authorized government official.

The testator declares his or her intentions to the official, who records the contents and reads them aloud in the presence of at least two witnesses. Thereafter, all parties sign the document.

This form of will is generally regarded as highly reliable and is less susceptible to challenges because the execution process is supervised by a public authority.

4. Secret Will

A secret will may be prepared either personally by the testator or by another person on the testator’s behalf.

The document is sealed and presented to a government official in the presence of at least two witnesses, with the testator declaring that the sealed document constitutes his or her will.

Although this form remains legally recognized, it is rarely used in practice due to its procedural complexity and the potential for technical defects.

5. Special Will

Thai law permits special forms of wills in exceptional circumstances, such as wartime, military operations, maritime voyages, or other emergencies where the execution of an ordinary will is impracticable.

Such wills constitute exceptions to the general rules and are effective only under the conditions specifically prescribed by law.

While Thai law provides several options for will-making, ordinary written wills and public wills remain the most widely utilized forms in practice due to their clarity, ease of proof, and ability to reduce the risk of future disputes among heirs.

The selection of an appropriate form of will should therefore not be based solely on convenience, but should also take into account the nature of the assets involved, family circumstances, and the potential for future disputes.

Wills: Five Common Misconceptions That May Render a Person’s Final Wishes Ineffective

Despite the importance of wills as legal instruments for estate planning, many Thai individuals either neglect to prepare a will or misunderstand the legal consequences of failing to do so. Such misconceptions frequently result in inheritance disputes and court proceedings.

From our experience as legal practitioners, many inheritance disputes do not arise from a lack of assets, but rather from a lack of proper succession planning and misunderstandings of inheritance law.

Misconception No. 1: “I Have a Spouse and Children, So I Do Not Need a Will”

This is perhaps the most common misconception.

Many people assume that all of their assets will automatically pass to their spouse upon death. In reality, Thai inheritance law requires the estate to be distributed among statutory heirs according to legally prescribed proportions.

For example, where a deceased person leaves both a spouse and children, the spouse does not automatically inherit the entire estate but instead shares inheritance rights with the children.

Consequently, if an individual wishes to distribute assets differently from the statutory scheme, a will is essential.

Misconception No. 2: “A Signed Piece of Paper Is Enough”

Although a will does not necessarily need to be prepared by a lawyer, Thai law imposes strict formal requirements.

A will lacking the required witnesses, execution date, signatures, or statutory formalities may be declared void.

In practice, courts have invalidated wills despite clear evidence of the deceased’s intentions simply because certain legal formalities were not observed.

Misconception No. 3: “An Unmarried Partner Will Automatically Inherit”

Many couples live together without formally registering their marriage.

However, under Thai law, cohabitation alone does not confer inheritance rights.

Accordingly, where one partner dies, the surviving partner has no automatic right to inherit, regardless of how long the relationship may have existed.

In such circumstances, a will becomes indispensable if the deceased intends to provide for the surviving partner.

Misconception No. 4: “A Will Only Needs to Be Made Once”

Many individuals prepare a will and never revisit it.

In reality, life circumstances change over time. Marriage, divorce, childbirth, acquisitions and disposals of assets, and business developments may all affect the suitability of an existing will.

A will that accurately reflected a person’s intentions ten years ago may no longer do so today.

Periodic review and updating of a will therefore constitute an important aspect of sound estate planning.

Misconception No. 5: “Only Wealthy People Need a Will”

Many people believe that wills are relevant only to wealthy families or large business owners.

In reality, virtually all forms of property can form part of an estate, including houses, land, condominiums, bank deposits, vehicles, company shares, contractual claims, and even digital assets.

Even relatively modest estates can become the subject of costly and time-consuming disputes among heirs.

In many cases, the costs associated with inheritance litigation far exceed the cost of preparing a valid will.

Estate Planning Is Not About Death — It Is About Responsibility

From a legal perspective, a will is not merely a document associated with death. Rather, it is a risk-management tool designed to protect loved ones and preserve family harmony.

A properly prepared will reduces uncertainty, minimizes disputes, and ensures that assets accumulated over a lifetime are transferred in accordance with the testator’s wishes.

Ultimately, estate planning is not about preparing to leave. It is about ensuring that those left behind can move forward without facing avoidable legal and family conflicts.

Disclaimer

his article is prepared for general informational purposes only and does not constitute legal advice. The preparation of a will should be undertaken with the assistance of qualified legal professionals to ensure compliance with applicable laws and alignment with the specific circumstances and objectives of each individual. Copy right under Copy Right ACT B.E. 2537

By Pinprapus Chartikavanich
8 June 2026