Thai Prenuptial Agreements: Recognition and Enforcement

TL;DR

Thai law allows prenuptial agreements (สัญญาก่อนสมรส) under Civil and Commercial Code §1465-1469. The agreement must be in writing, signed by both parties before marriage, witnessed by two witnesses, and registered at the same time as the marriage at the District Office (Khor Ror 2). Late registration is not allowed — without registration at marriage, the prenup is void as to third parties.

What a Prenup Can Cover

• Asset segregation: Sin Suan Tua (sole property) vs Sin Som Ros (community property) allocations.
• Future-asset treatment.
• Debt allocation.
• Inheritance interaction (within bounds of CCC succession rules).

Limits

• Cannot contract against public order or good morals (§1465).
• Cannot disinherit children below statutory floor.
• Cannot vary statutory child-support obligations.
• Cannot exclude spousal-maintenance obligations during marriage.

Registration Procedure

1. Draft prenup (commonly with bilingual translation).
2. Both parties sign with 2 witnesses.
3. Bring to District Office on marriage-registration day.
4. Officer registers prenup as annexed to marriage certificate.

Foreign Element

• If marriage abroad: Thai prenup not registered with Thai marriage — third-party effect uncertain; may need fresh registration on Thai-residence recognition.
• Foreign prenup recognised based on private international law principles + form requirements.

Common Mistakes

• Drafting prenup but not registering on marriage day.
• Trying to amend prenup mid-marriage — generally void (per §1469).
• Overbroad clauses void on public-policy ground.

FAQs

1. Postnuptial agreements?

Generally void under §1469; only court-approved modifications allowed.

Related Reading

• Thai Spouse Land Declaration
• Family Law Hub