Book 5: Family

Section 1466: Prenup, limits on what can be agreed

Gendered terms (husband/wife) replaced with gender-neutral 'spouse'; the rule applies equally to same-sex married couples.

Statutory text (Thai original)

สัญญาก่อนสมรสเป็นโมฆะ ถ้ามิได้จดแจ้งข้อตกลงกันเป็นสัญญาก่อนสมรสนั้นไว้ในทะเบียนสมรสพร้อมกับการจดทะเบียนสมรส หรือมิได้ทำเป็นหนังสือลงลายมือชื่อคู่สมรสและพยานอย่างน้อยสองคนแนบไว้ท้ายทะเบียนสมรส และได้จดไว้ในทะเบียนสมรสพร้อมกับการจดทะเบียนสมรสว่าได้มีสัญญานั้นแนบไว้

Verbatim from the Royal Gazette / Office of the Council of State

English translation

The ante-nuptial agreement is void if not entered in the Marriage Register at the time of marriage registration terms of the ante-nuptial; or if not made in writing and signed by both spouses and by at least two witnesses and entered in the Marriage Register at the time of marriage registration stating that the ante-nuptial is thereto annexed.

This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.

Firm annotation

บทบัญญัตินี้เป็นบทว่าด้วยแบบของสัญญาก่อนสมรส สัญญาก่อนสมรสเป็นโมฆะ ถ้ามิได้จดแจ้งข้อตกลงไว้ในทะเบียนสมรสพร้อมกับการจดทะเบียนสมรส หรือมิได้ทำเป็นหนังสือลงลายมือชื่อคู่สมรสและพยานอย่างน้อยสองคนแนบไว้ท้ายทะเบียนสมรส และจดไว้ในทะเบียนสมรสพร้อมกับการจดทะเบียนสมรสว่ามีสัญญานั้นแนบไว้ จึงต้องทำให้ครบในวันจดทะเบียนสมรส ทำย้อนหลังไม่ได้ ส่วนข้อจำกัดเรื่องเนื้อหาของข้อตกลงอยู่ในมาตรา 1465 วรรคสอง

Supreme Court decisions interpreting this section

  1. Supreme Court Judgment No. 6552/2538 (1995)

    Whether property is marital or separate is decided under the law in force when it was acquired, and a classification made under the former Book 5 survives the 1976 revision. Property received during the marriage by inheritance or by gift, with nothing said about its being sin doem or separate property, was sin somros under the FORMER section 1466. That it would now be separate property under section 1471(3), or marital only if a will or written gift said so under section 1474, does not change what it already is. Note on placement: this decision construes the FORMER Book 5 section 1466. The section 1466 now in force is a different provision, governing when an ante-nuptial agreement is void for want of entry in the Marriage Register or of the required writing and witnesses.

    Six items in the estate inventory had been acquired by the deceased while the former Book 5 of the Civil and Commercial Code was in force. The Supreme Court held that what class of matrimonial property they fell into had to be decided under the law in force when they were acquired. The deceased had received them during the marriage by inheritance and by gift, with nothing stating that they were sin doem or separate property, so they were sin somros between the deceased and R. under the former section 1466. The 1976 revision, which by section 1471 makes property received during marriage by inheritance or gratuitous gift separate property, and by section 1474 makes property received under a will or a written gift marital only where the instrument says so, differs from the former Book 5, but does not alter the character of property already classified under it.

    Read the full decision (deka.in.th)

Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.

Cited in 33 Supreme Court decisions (1948 to 2017)

Selected citing decisions

  • Decision 2497/2552 (2009)
  • Decision 4561/2544 (2001)
  • Decision 4477/2542 (1999)
  • Decision 5592/2540 (1997)
  • Decision 2554/2539 (1996)
  • Decision 6552/2538 (1995)
  • Decision 6711/2537 (1994) Prenuptial Agreement and Immovable Property
  • Decision 6575/2537 (1994)

This list is selected automatically, weighted towards judgments that turn on this section rather than ones that merely recite it when passing sentence. It has not yet been reviewed by the firm.

Most often cited alongside

Sections that appear in the same judgments as this one most often. The figure is the number of decisions.

Counted across the firm's corpus of 83,652 Supreme Court decisions, 1921 to 2026. The count is complete; the stated year range trims rare outliers so it describes where the citations actually sit. These figures are computed by us and are not official court statistics. How we count these, and what we measured

Related guides on ThaiLawOnline

Cite this section

  • Plain citation Civil and Commercial Code, s. 1466 (Thailand)
  • Academic citation Civil and Commercial Code (Thailand), s. 1466. ThaiLawOnline, https://www.thailawonline.com/thai-civil-code/section-1466/ (accessed 27 August 2026).
  • Thai citation ป.พ.พ. มาตรา 1466
  • Permalink https://www.thailawonline.com/thai-civil-code/section-1466/
  • Embed on your site <blockquote cite="https://www.thailawonline.com/thai-civil-code/section-1466/"><p>The ante-nuptial agreement is void if not entered in the Marriage Register at the time of marriage registration terms of the ante-nuptial; or if not made in writing and signed by both spouses and by at least two witnesses and entered in the Marriage Register…</p><footer>Civil and Commercial Code, s. 1466 (Thailand): <a href="https://www.thailawonline.com/thai-civil-code/section-1466/">ThaiLawOnline</a></footer></blockquote>

The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.

This is educational reference, not legal advice. Consult a qualified Thai lawyer before relying on any provision.

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