Estate Planning for Expats in Thailand: Wills and Cross-Border Assets

TL;DR

Estate planning for foreign nationals in Thailand requires coordinating Thai succession law (Civil and Commercial Code B.E. 2468 (1925) Book V) with home-country probate. Key points: Thai wills (under CCC §1656 — 5 statutory forms) govern Thai-situs assets; foreign wills may be admitted with translation and procedural steps; intestate succession under CCC §1629 applies absent valid will; Thailand has no general onshore trust regime so common-law trust structures don't translate directly; Inheritance Tax Act B.E. 2558 (2015) applies above the THB 100m threshold; cross-border probate adds significant time.

Thai Will Forms (CCC §1655-§1672)

Intestate Succession (CCC §1629)

Six classes of heirs in order: descendants → parents → siblings of full blood → siblings of half blood → grandparents → uncles/aunts. Surviving spouse takes a share alongside the highest existing class. Foreign-national descendants inherit on the same footing as Thai descendants.

Foreign Wills

• Translation into Thai by certified translator.
• Notarisation and legalisation in the country of execution.
• Probate process in Thailand to appoint Thai estate administrator.
• Conflicts of law analysis where Thai and foreign succession rules differ.

Cross-Border Considerations

Property-Specific Notes

• Condo units (Condominium Act B.E. 2522 (1979)): pass via inheritance; foreign quota constraints apply for resale.
• Land via long-term lease: lease is transferable to heirs subject to lease terms.
• Vehicles, bank accounts: standard probate.
• Business interests: shareholder agreements may dictate succession.

Common Mistakes

Avoid these traps:

• Assuming a foreign will covers Thai-situs assets without Thai-side probate.
• Treating common-law trust structures as enforceable in Thailand for Thai-situs assets.
• Joint-account assumptions — Thai bank rules on joint accounts differ from home country.
• Underestimating cross-border probate time (1-3 years common).
• Missing the Inheritance Tax threshold and filing requirement.

FAQs

1. Should I have one will or two?Two wills (Thai for Thai-situs, home for home-situs) is often cleaner. The two must be consistent and refer to each other to avoid revocation by the later instrument.

2. Can I leave Thai property to a foreign heir?Yes for condos (subject to quota constraints), bank accounts, vehicles. Land inheritance by foreigner heir typically requires sale and proceeds-transfer rather than transfer of title.

3. What is the inheritance tax rate?5% on the portion above THB 100m for lineal descendants/ascendants/spouse; 10% for others. Below THB 100m: no inheritance tax. Annual gifts also have separate thresholds.

4. How do I ensure my Thai will and home-country will work together?

Clearly delineate jurisdictional scope in each will (Thai-situs versus home-country assets), reference each other, and use the same overall family plan. Best practice is to engage counsel in both jurisdictions.

5. What about digital assets in the estate?

Digital assets (cryptocurrencies, online accounts, IP rights) need explicit treatment — access credentials, succession authority, and platform-specific procedures must be documented separately.

Related Reading

• Inheritance and Succession Law Hub
• Death of a Foreigner in Thailand