On a quiet January morning, a shift occurred in Thailand’s legal landscape that quietly but powerfully changed the inheritance rights for millions of Thai citizens. The law didn’t cause immediate headlines or protest, but its implications are vast, cutting deep into family ties, succession planning, and financial decisions for generations to come. For anyone with children, siblings, or aging parents with assets, this change is not just relevant — it’s urgent knowledge.
Until recently, inheritance in Thailand was governed by a rather rigid legal framework favoring wills and specific order of succession secured by Civil and Commercial Code. However, with modernization efforts and increasing cases of inheritance disputes piling up in Thailand’s judicial system, the government has taken what many see as a “long overdue reform” in inheritance law. This new legislation, fully enacted in January 2024, redefines how wealth, property, and titles pass from one generation to another — and who gets what.
This reform clearly lays out new entitlements and even challenges some traditional assumptions about family hierarchy and wealth rights. Whether you’re a parent planning to hand down assets, or a descendant hoping to receive a rightful share, the impact is unavoidable. And with legal experts calling this “one of the most significant family law reforms in decades,” families are advised to pay close attention — and potentially revisit earlier inheritance planning.
What changed this year
| Change Area | Old Law | New Law (2024) |
|---|---|---|
| Spousal Priority | Spouse shares equally with children or parents | Spouse receives fixed portion before any division |
| Children With No Will | All children receive equal share | Firstborn child eligible for preference in asset administration |
| Extended Family Rights | Siblings only inherit in absence of direct heirs | Certain categories of siblings may now contest |
| Will Recognition | Informal wills often challenged or rejected | New rules clarify formats for valid wills |
| Property Abroad | Limited recognition | Foreign assets potentially considered depending on status |
Why this reform was introduced now
The Thai legal system has long struggled with the question of fair inheritance, made even more complex by modern blended families, long-term partners outside marriage, and increasing asset mobility such as overseas property. Legal loopholes and ambiguous clauses in the former Civil and Commercial Code made it especially easy for wealthier family members to disinherit weaker or less informed relatives. This led to a rise in contested wills and legal battles lasting years.
Minister of Justice Sorawat Athisorn noted during the parliamentary debate that “clear, accessible, and enforceable inheritance laws” were necessary not just to cut legal case backlog, but also to ensure a “more harmonious transition of wealth within family systems.” The goal, in part, was to protect everyday Thai families from unfair surprise or manipulation, and to promote smooth transitions in the event of a family member’s death.
Who qualifies and why it matters
Perhaps the most talked-about change is in the recognition of the **firstborn child** in asset administration. While all legal heirs—spouse, children, parents—retain their status under the law, the firstborn now has presumptive preference in acting as the estate executor, unless another is assigned via will. For traditional Thai families where elder siblings often carry responsibility, this aligns with common practice.
Another key change revolves around **non-blood family ties**. Long-time partners who were not legally married but cohabitated and raised families together may now qualify to contest for a share under certain new protective clauses. This is particularly important in situations where the deceased left no valid will, a common scenario in rural Thailand.
Moreover, extended family members like siblings (both full and half) can now, under stricter conditions, raise concerns or contests if they are materially dependent on the deceased or had significant involvement in asset creation, such as helping to build a family business. While they do not gain automatic inheritance rights, this clause opens the door to more equitable case reviews by courts.
How to apply step-by-step
Applying for inheritance rights under the new law follows a **structured legal process**, which has now been simplified in several ways:
- Step 1: Obtain official death certificate of the deceased
- Step 2: Check for registered will or testament
- Step 3: Register a petition with the local district court requesting estate administration rights
- Step 4: Notify other legal heirs (spouse, children, parents, etc.) within 30 days
- Step 5: Court hearing and asset distribution
If no formal will exists, the **order of inheritance now prioritizes** as follows: spouse (fixed portion), children (equal share among them), parents, siblings, and then others. In the absence of all heirs, the assets revert to the state.
Biggest winners and losers of the 2024 inheritance law
| Group | Status | Impact |
|---|---|---|
| Legal Spouses | Married to deceased | Gain – Now guaranteed base share before distribution begins |
| Firstborn Children | Eldest biological or adopted child | Gain – Automatic preference for estate control if no objection |
| Unmarried Partners | Lived together but not legally wedded | Partial gain – Can contest in some cases but no automatic rights |
| Estranged Siblings | No close relationship with deceased | Lose – Harder to qualify without proof of contribution |
| Government Institutions | N/A | Lose – Asset claims now more rigorously defended by family |
Expert insights on the long-term implications
This law brings fairness while respecting Thai family traditions. The use of clear roles, including prioritizing the spouse and firstborn, reduces disputes.
— Chanoknan P., Family Law Attorney
We expect a rise in formal will registrations now that people fear unintended outcomes. That’s a good thing for legal clarity.
— Dr. Arthit R., Legal Scholar, Thammasat University
This isn’t just about money—it’s about respecting roles that Thai society already informally recognizes.
— Saowalak T., Sociologist
Frequently asked questions about the inheritance law change
Can an adopted child inherit under the new law?
Yes. Adopted children are now officially recognized as equal heirs under the current law, with the same rights as biological children in terms of inheritance.
What happens if someone dies without a will?
If no valid will exists, the estate is divided among legal heirs according to a new priority list: spouse (gets a fixed base portion), then children equally, followed by parents, and finally siblings if necessary.
Does the firstborn child get more inheritance?
No. However, the firstborn now receives legal preference in acting as the estate administrator if there is no appointed executor in a valid will.
Can foreign spouses claim inheritance?
Yes, but they must be legally married and prove the marriage was duly registered. Local laws regarding foreign ownership of land and assets still apply.
Can I disinherit a child under this law?
Yes, but disinheritance must be explicitly and formally done in a will or notarized statement. Otherwise, children retain the right to contest the omission.
What are the safest ways to ensure my inheritance is handled properly?
Consulting a legal expert to create a formal will that complies with updated requirements is now the most secure route. Informal or verbal agreements may no longer be honored under the new law.
Can a cohabiting partner inherit if we never married?
Potentially, under certain circumstances where dependency and shared assets can be proven. But it’s much riskier than legal marriage in inheritance terms.
Is land overseas included in Thai inheritance?
Previously excluded or deemed difficult to enforce, foreign assets may now be included if ownership and citizenship/visa status align with new legal interpretations.