This article was updated in April 2026
If you are an expat in Thailand, understanding who inherits under Thai law is an important part of planning ahead.
Where there is no valid will, Thai statutory heir rules decide who inherits the estate. These rules follow a fixed legal order and may not reflect what the family expects or what the deceased would have wanted.
This can be especially important for expats with mixed families, children from earlier relationships or assets in more than one country. In these situations, the default legal outcome may be less straightforward than it first appears.
This article explains how Thai statutory heir rules work, when they apply and why they matter for expat families in Thailand.
Why Thai Statutory Heirs Matter for Expats
Thailand has a fixed order of statutory heirs. If you die without a valid will, the law decides who inherits and in what order.
That may not match what you want, especially in mixed families, where there are children from earlier relationships or where family members live overseas.
Thai statutory heir rules provide a default legal framework, but they do not take personal intentions, family dynamics or cross-border circumstances into account. This can create particular problems for expats in situations such as these:
- Stepchildren do not inherit unless they have been legally adopted
- A child born outside marriage must be legally recognised by the father in order to inherit from him
- Marital property is generally divided first, which can affect what actually passes through the estate
- People you intended to provide for may receive little or nothing
- Disputes can arise between a new spouse and children from a previous relationship
- Assets in different countries may be governed by different legal systems, creating gaps or conflicting outcomes
That is why understanding how these rules work is an important part of planning ahead.
When Thai Intestacy Rules Apply
Thai intestacy rules apply when a person dies without a valid will covering the assets in question.
In the simplest case, that means there is no will at all. But the rules may also apply where a will is invalid, unclear or does not deal with all relevant Thai assets.
This is important for expats because people sometimes assume that an overseas will automatically covers everything. In practice, that may not always be the case. If Thai assets are not clearly dealt with under a valid will, the statutory heir rules may still determine who inherits them.
That is why it is important to look not just at whether a will exists, but at whether it properly covers the assets and family circumstances involved.
The Order of Statutory Heirs
Thai law sets out fixed classes of statutory heirs. The order matters.
You begin with the first class and only move to the next if there are no surviving heirs in the higher class or no descendants representing them.
The classes are:
- Children and their descendants
- Parents
- Full-blood siblings
- Half-blood siblings
- Grandparents
- Uncles and aunts
This means that closer classes take priority over more distant relatives. For example, parents inherit only where there are no surviving children or descendants.
How a Surviving Spouse is Treated
A surviving spouse is treated separately from the six classes of statutory heirs. In practice, the spouse inherits alongside the highest class that qualifies.
The spouse’s entitlement depends on who else survives. It is also worked out only after identifying what actually forms part of the estate.
Step 1: Identify the Estate First
Before inheritance is calculated, it is necessary to distinguish between marital property and personal property.
In broad terms:
- Marital property is generally divided first between the spouses
- The surviving spouse keeps their own share of that marital property
- The estate then consists of the deceased’s share of any marital property together with their personal property
This is important because not everything the family thinks of as ‘the estate’ will necessarily be inherited under the statutory heir rules.
Step 2: Calculate the Spouse’s Share of the Estate
Once the estate has been identified, the surviving spouse inherits alongside the highest class of statutory heirs that qualifies.
As the table above shows:
- If there are children, the spouse receives a share equal to that of one child
- If there are parents, the spouse receives twice the share of each parent
- If there are full-blood or half-blood siblings, the spouse receives 50% of the estate
- If there are only grandparents, or only aunts and uncles, the spouse may receive the whole estate
Quick Examples
Spouse and two children
Estate after marital split: THB 6,000,000
Heirs: spouse and two children
Result: the estate is divided into three equal shares, so each receives THB 2,000,000
Spouse and parents, with no children
Estate after marital split: THB 4,000,000
Result: the spouse receives THB 2,000,000 and each parent receives THB 1,000,000
Spouse and half-blood brother only
Estate after marital split: THB 3,000,000
Result: the spouse receives THB 2,000,000 and the half-blood brother receives THB 1,000,000
Key Points to Remember
- The spouse’s statutory share is separate from their own share of any marital property
- Representation does not change the spouse’s share. It only allows a deceased child’s descendants to inherit in that child’s place
- A person must be legally married at the time of death to qualify as a spouse. Separation does not end the marriage, but divorce does
- Same-sex marriages are treated in the same way as opposite-sex marriages under Thai law
Marital Property and Personal Property
Thai law draws an important distinction between marital property and personal property. This affects what actually forms part of the estate.
In broad terms:
- Marital property generally includes assets acquired during the marriage
- Personal property generally includes assets owned before marriage, as well as gifts or inheritances received by one spouse alone
When a person dies, marital property is usually divided first. The estate then consists of the deceased’s share of any marital property together with their personal property.
For example, a condominium bought during the marriage may form part of the marital property. By contrast, money inherited by one spouse alone is usually treated as personal property unless it has clearly been converted into marital property.
Marital and Personal Property
Thai law draws an important distinction between marital property and personal property. This affects what actually forms part of the estate.
In broad terms:
- Marital property generally includes assets acquired during the marriage
- Personal property generally includes assets owned before marriage, as well as gifts or inheritances received by one spouse alone
When a person dies, marital property is usually divided first. The estate then consists of the deceased’s share of any marital property together with their personal property.
For example, a condominium bought during the marriage may form part of the marital property. By contrast, money inherited by one spouse alone is usually treated as personal property unless it has clearly been converted into marital property.
The Status of Children Under Thai Law
The legal status of a child can affect whether they inherit under Thai statutory heir rules.
In general:
- Adopted children inherit in the same way as biological children
- Stepchildren do not inherit as statutory heirs unless they have been legally adopted
- A child born outside marriage inherits from the father only if the child has been legally recognised or legitimated
These points can be especially important for mixed families, second marriages and families whose relationships have not been formalised in the same way across different countries.
Why the Default Rules May Not Match Your Wishes
Thai statutory heir rules provide a legal default, but they do not always produce the outcome a family expects.
This can be especially important for expats with mixed families, overseas connections or assets held in different forms. Even where the rules are clear, the result may still be misaligned with the deceased’s intentions.
Examples include:
- Stepchildren being excluded unless they have been legally adopted
- Uncertainty about spouse status where there has been separation, an invalid later marriage or incomplete divorce formalities
- Assets in different countries being governed by different legal systems
- Foreign heirs inheriting Thai land subject to legal restrictions on long-term ownership
- Wills in different countries conflicting with one another or creating gaps
That is why understanding the statutory heir rules is only the first step. The next question is whether the legal default actually reflects what you want to happen.
How a Valid Will Changes the Position
A valid Thai will allows you to move away from the default statutory heir rules and set out clear instructions for your Thai assets.
This can help by:
- Naming the people who should inherit
- Reducing the risk of unintended outcomes
- Making it easier for your family to understand your wishes
- Bringing greater clarity where the family structure is more complex
For some expats, a properly drafted Thai will may be enough to deal with their Thai assets clearly.
When a Will May Still Not Be Enough
For others, a document-only approach may be too limited.
This is more likely where there are:
- Assets in more than one country
- An existing foreign will
- Homes built on land with foreign ownership restrictions
- Business interests
- Digital assets
- Children from different relationships or family members in different jurisdictions
In those situations, the real question is not simply whether a will exists. It is whether the overall succession position has been properly thought through.
Practical Next Steps
- Decide who you would want to inherit your Thai assets
- Check whether your family structure creates any gaps under the default rules
- Confirm the legal status of children where relevant
- Make sure any Thai will and foreign will work together properly
- Keep an up-to-date list of key assets and documents
- Review your arrangements after major life changes
Further Reading
If you would like to explore related succession issues in more detail, these articles may help:
What Happens if There Is No Will in Thailand?
Making a Will in Thailand
Why a Will Alone May Not Be Enough in Thailand
Can Foreigners Inherit Land in Thailand?
Succession Planning & Inheritance Guide for Expats in Thailand
Take the Next Step
Understanding the statutory heir rules is only one part of the picture. The real question is whether your current arrangements reflect your wishes and give your family the clarity they may need.
If you would like to understand how these rules may apply to your situation and what level of planning may be appropriate, we are here to help.
