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Thai Notary Law

& Service Co., Ltd.

Thai Notary Law & Service Co., Ltd. corporate seal logo

Thai Notary Law & Service Co., Ltd.

Reg. No. 0405565001923

Established 2022 · Licensed by Lawyers Council of Thailand

Legal advisory

Thai prenuptial agreements for mixed-nationality couples

In Thailand the agreement is registered at the same moment as the marriage. There is no way to add it the following week — the timing is the whole point.

Call 094-8958999Line: @thainotaryView pricing →
6
Notary Attorneys
77
Provinces
40+
Languages

Our Team

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Thai notary attorney affixing a gold notarial seal on a certified document — Bangkok law office at golden hour

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Every notarial seal, every certified translation, every embassy legalization — handled with the precision of a Bangkok law firm licensed since 2022.

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Established

2022

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Coverage

180+ countries

6 In-house Notary Public Attorneys

Click any license to view the full image. All 6 attorneys are registered Notarial Services Attorneys under the Lawyers Council of Thailand.

Under Civil and Commercial Code s.1466, a prenuptial agreement is void unless it is entered in the marriage register at the time of marriage registration, or made in writing signed by both spouses and at least two witnesses and referred to in the register. Terms contrary to public order or good morals, and terms subjecting marital property relations to foreign law, are void under s.1465.

Governing authority / legal basis
Civil and Commercial Code s.1465–1469 (prenuptial agreements and agreements between spouses), s.1470–1474 (personal and marital property), s.1448 and s.1457 (marriage and registration); Bureau of Registration Administration district-office registration procedure
Turnaround
Drafting and review 5–10 working days · must be completed before the marriage registration appointment, which we book around the finished draft
Fees
Quoted per matter once we see the documents, the parties and the deadline. Court, land office and government fees are charged at the authority's own rate and are separate. Confirm scope and fees with our staff by phone, Line or Email before any drafting or filing begins.

What we handle

Timing control

We work backwards from the registration date, because an agreement signed after the marriage is not a prenuptial agreement and can be avoided under s.1469.

Property classification

Sin Suan Tua (personal property) and Sin Somros (marital property) are defined by the Code. The agreement records which assets each party brings in, so the classification is documented rather than reconstructed years later.

Bilingual drafting

Thai text for the registrar and the court, English so the foreign party understands what is being registered, drafted together rather than translated at the end.

District office coordination

We confirm the office's requirements in advance — witness identity documents, the affirmation of freedom to marry, and translation and legalisation of foreign documents — so the entry is made on the day.

Attendance and interpreting

We attend the registration with the couple and interpret, so the foreign party is not signing a Thai register entry they have not read.

Documents required

DocumentIssued / prepared byWatch out for
Passports / Thai ID of both partiesBoth partiesNames must match every supporting document exactly, including middle names.
Affirmation of freedom to marry from the foreign party's embassyEmbassy of the foreign partyThen translated and legalised by the Department of Consular Affairs before the district office accepts it.
Evidence of the end of any previous marriageForeign registrar / Thai district officeDivorce decree or death certificate, translated and legalised where issued abroad.
Asset schedule for each partyBoth partiesProperty, accounts, shares and debts brought into the marriage, described precisely enough to identify.
Two witnesses at the district officeArranged for the dayThey must attend and sign; a witness added afterwards does not cure the entry.

Document lists, official fees and acceptance conditions vary between offices, branches and provinces, and change by notification. Confirm with the receiving authority before you act on this page.

How the process runs

  1. 1

    Both-party briefing

    Each party is told plainly what the Code makes marital property by default, so the agreement is a considered variation rather than a surprise.

    Step 1: Both-party briefing
  2. 2

    Asset disclosure

    A schedule from each side. Non-disclosure is the most common ground on which an agreement is later attacked.

    Step 2: Asset disclosure
  3. 3

    Bilingual draft and revisions

    Thai and English drafted in parallel, with independent review encouraged for the other party.

    Step 3: Bilingual draft and revisions
  4. 4

    Registration appointment

    Booked at the district office with the agreement ready to be entered in the register at the moment of registration.

    Step 4: Registration appointment
  5. 5

    Attendance

    We attend, interpret, check the register entry and keep a certified copy for both parties.

    Step 5: Attendance

Why files get rejected

  • An agreement signed before the wedding but not entered in the marriage register is void under s.1466 — the signature is not the operative step, the registration is.
  • A term that purports to govern marital property by a foreign law is void under s.1465; a foreign prenuptial agreement therefore cannot simply be adopted wholesale in Thailand.
  • Child custody and maintenance cannot be fixed in advance to bind a court — the child's welfare governs, whatever the parents agreed.
  • A term that would leave one spouse destitute, or is contrary to public order or good morals, is void.
  • A marriage registered abroad and later recorded in Thailand does not create an opportunity to add a prenuptial agreement afterwards.

Frequently asked questions

คำถามที่พบบ่อย (FAQ)

When must the agreement be signed?+

Before the marriage, and it must be entered in the marriage register at the time the marriage is registered. After registration it is no longer a prenuptial agreement.

Is my foreign prenup valid in Thailand?+

Not by itself. Section 1465 voids a term subjecting marital property relations to foreign law, and s.1466 requires registration with the Thai marriage. Couples marrying in Thailand normally need a Thai-form agreement as well.

What can the agreement cover?+

Classification and management of property brought into the marriage and acquired during it, debts, and how property is divided. It cannot bind a court on child custody or maintenance.

Do both of us need our own lawyer?+

Independent advice for the other party is not compulsory, but it makes the agreement much harder to attack later on grounds of pressure or misunderstanding. We recommend it in every mixed-nationality matter.

Can we change it after we marry?+

Agreements made between spouses during the marriage may be avoided by either spouse during the marriage or within one year of dissolution under s.1469, so post-marriage variations are far weaker than a registered prenuptial agreement.

Authoritative Sources

References & Citations

Official government, legal, and international sources cited throughout this page.

  1. 1

    Office of the Council of State· แหล่งทางการ

    Office of the Council of State — Civil and Commercial Code ↗

    www.krisdika.go.th

  2. 2

    Bureau of Registration Administration· แหล่งทางการ

    Bureau of Registration Administration (BORA), Ministry of Interior ↗

    www.bora.dopa.go.th

  3. 3

    Department of Consular Affairs· แหล่งทางการ

    Department of Consular Affairs — legalisation & translation ↗

    consular.mfa.go.th

  4. 4

    Ministry of Foreign Affairs· แหล่งทางการ

    Ministry of Foreign Affairs of Thailand ↗

    www.mfa.go.th

  5. 5

    Office of the Judiciary of Thailand· แหล่งทางการ

    Office of the Judiciary of Thailand ↗

    www.coj.go.th

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General information, not legal advice on your specific matter. We are not a bank, not an insurance broker and not an agent of any state authority, and we do not guarantee any authority's decision.

Talk to us before you file — reply within 24 hours

Tell us your nationality, visa category and the deadline. Our staff confirms the scope and the fee by phone, Line or Email before any work begins.

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Disputes & cross-border claims

Company & compliance

A lawyer pressing a notarial seal onto original signed documents at an office desk
Signatures must be executed in front of a Notarial Services Attorney registered with the Lawyers Council of Thailand.

Deep Context and Service Standards

Sourced from the Lawyer Act B.E. 2528 (1985), the Lawyers Council Regulation on Notarial Services Attorneys B.E. 2546 (2003), the Personal Data Protection Act B.E. 2562 (2019), the Hague Apostille Convention of 1961, and official publications of the Department of Consular Affairs (MFA).

Firm Overview and Practice Framework

Thai Notary Service is a full-service Thai law office providing document notarization, certified translation, legalization chain management, and international document consultancy. Our team includes Notarial Services Attorneys licensed by the Lawyers Council of Thailand under the Royal Patronage, and we operate offices in Bangkok, Greater Bangkok, and a partner network in every province across Thailand. We serve individuals, expatriates, cross-border couples, students, corporates, multinationals, and government agencies requiring documents with legal effect both inside Thailand and abroad.

All notarial acts follow the Lawyer Act B.E. 2528 (1985) Section 27 read with the Lawyers Council Regulation on Notarial Services Attorneys B.E. 2546 (2003), the sole legal basis authorizing Thai attorneys to certify documents comparable to a foreign Notary Public. Every attorney on our team has completed the accredited training and examination administered by the Lawyers Council and holds a verifiable registration number searchable on the Lawyers Council public registry.

By choosing a firm that houses Notarial Services Attorneys in-house, clients consolidate a multi-stage legalization chain under one accountable roof: attorney notarization, followed by Ministry of Foreign Affairs (MFA) legalization at the Department of Consular Affairs, followed by embassy or consular legalization for the destination country. Since 21 November 2024 the Kingdom of Thailand has become a party to the Hague Apostille Convention (Convention of 5 October 1961 Abolishing the Requirement of Legalisation for Foreign Public Documents). Documents apostilled in Thailand are now accepted in more than 125 member states without embassy re-legalization, materially reducing turnaround time and cost.

General Information and Firm Framework — Deep Context

The firm operates under an ISO 9001:2015 quality-management framework and enforces data protection consistent with the Personal Data Protection Act B.E. 2562 (2019). All client documents are stored with AES-256 encryption at rest and in transit and are retained for ten years in accordance with lawyer-record obligations under the Lawyer Act.

Our team combines Notarial Services Attorneys, NAATI-certified translators, and legal specialists in intellectual property, taxation, cross-border family law, corporate law, and immigration law, together with a support team dedicated to documentation, translation, and government-agency liaison.

Fees are transparent and disclosed both on the website and in the pre-engagement quote, separating professional fees, government fees, travel disbursements (if any), and other line items. The firm issues VAT invoices and official receipts and accepts payment by bank transfer, credit card, PromptPay, and cash.

Trust Standards — PDPA, SLA, Quality Assurance

On data protection, the firm strictly follows the Personal Data Protection Act B.E. 2562 (2019), Sections 24, 26, and 27 — collecting, using, and disclosing personal data only to the extent necessary for the engagement, disclosing purposes, and obtaining consent from data subjects in advance. Clients retain the right to inspect, obtain a copy, rectify, erase, or withdraw consent at any time through the firm's Data Protection Officer (DPO). For clients in the European Union, processing follows GDPR Article 6 (lawful basis) and Article 46 (Standard Contractual Clauses).

Our Service Level Agreement targets an inquiry response within one hour during business hours (09:00–18:00, Monday to Saturday), attorney appointments within twenty-four hours, standard notarization within one business day (or two to three hours on express service), certified translation within three to five business days per ten A4 pages, MFA legalization within two business days on standard service (one business day express), and embassy legalization typically within three to fifteen business days depending on the mission's own policy.

Every deliverable passes a three-tier quality-assurance chain: (1) the responsible attorney or translator, (2) a Senior Attorney or department head reviewing substance and formatting, (3) a Quality Control desk performing the final pre-delivery check. Any firm-side error is remedied at no additional cost, and if a document is rejected by a government authority due to a firm-side error, we cover the entire re-filing fee.

Contact and Initial Consultation

Initial consultation is complimentary via Line @thainotary or by phone at 094-8958999. The team responds within one hour during business hours. Every inquiry is treated confidentially under the Lawyers Council ethics rules and the Personal Data Protection Act.