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Oath & Affirmation — Notarial Services Attorney · Lawyers Council Reg. B.E. 2546 §§ 17–22 · HCCH Apostille (มีผล 28 ก.พ. 2570)

Oath & Affirmation Service for Foreigners and Thai Nationals (Oath, Affirmation, Solemn Declaration) — Reg. 2546 §§ 17–22 · Oath of Office Act B.E. 2542 · HCCH Apostille (มีผล 28 ก.พ. 2570)

Notarial oath (religious) and affirmation (secular) service delivered by Lawyers-Council-registered Notarial Services Attorneys — used for Affidavits, Statutory Declarations, cross-border Powers of Attorney, court witness statements, USCIS / UKVI / Australian DHA supporting declarations, BMD registries, university transcripts and financial institutions. End-to-end: wording review → in-person oath → Jurat → MFA Apostille (HCCH (in force for Thailand 28 February 2027)) or Embassy Legalization for non-contracting states. Fixed-fee, no contingency, always in person — no Zoom oaths, no backdating (Reg. 2546 § 19).

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ขึ้นทะเบียนกับสภาทนายความในพระบรมราชูปถัมภ์
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6
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4
สาขาทั่วประเทศ
50+77
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60+
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Oaths and affirmations are the operational core of every Notary Public system worldwide — any document where a declarant must 'verify the truth on pain of criminal penalty' passes through this step before the Notarial Services Attorney can issue a Jurat (the certification that the oath was administered in their presence). In Thailand the authority lives in **Lawyers Council Notarial Services Regulation B.E. 2546 §§ 17–22** together with the **Oath of Office Act B.E. 2542** — unlike common-law Notaries Public who derive authority from royal commission, Thai Notarial Attorneys are licensed lawyers who have completed a registered training course and are listed on the Lawyers Council register.

Common mistakes: (a) assuming a Zoom oath is valid — Reg. 2546 § 19 requires 'in the presence of' the Notarial Attorney in physical attendance (Remote Online Notarization is not recognised in Thailand as of June 2026); (b) sending a proxy to sign — Penal §§ 264 + 268 forgery, up to 3 years each; (c) underestimating penalties for false swearing — Penal § 177 up to 7 years; (d) lifting Affirmation wording from another jurisdiction without adapting it to Thai requirements — the MFA may refuse to authenticate; (e) forgetting Apostille or Embassy Legalization for overseas use.

Our team are Notarial Services Attorneys on the Lawyers Council register (verify at /trust/credentials). Scope: wording review → appointment → ID + AMLA CDD → in-person oath/affirmation → signature and seal → Jurat → MFA Apostille / Legalization → return to client by domestic or international courier. Lawyer-client privilege from your first message, PDPA §§ 24 + 26 (sensitive personal data), ISO/IEC 27001 servers in Thailand, **no contingency fees** under Lawyers Council Code of Ethics 1986 § 11.

HCCH Apostille (entering into force in Thailand on 28 February 2027): for the 130 contracting states a single Apostille replaces embassy legalization, dropping turnaround from 7–14 days to 1–3 business days and costs by 60–75%. We verify destination-country status on every quote — no surprise costs.

Notary attorneys

Notarial oath (religious) and affirmation (secular) service delivered by Lawyers-Council-registered Notarial S

6Notary attorneys

Provinces

Provinces · 50+77

77Provinces

Clients served

16,168+ clients · 60+ nationalities

16,168+Clients served

Turnaround

Send your draft document and destination country via LINE — receive an Oath Roadmap + fixed-fee quote within o

≤24hTurnaround

What you need to know

Document types that require Oath / Affirmation

  • Affidavit — court / immigration / banking
  • Statutory Declaration — single status, identity, lost document
  • Power of Attorney with Oath — where the destination jurisdiction requires sworn POA
  • Court Witness Statement (cross-border) — under Letters Rogatory or foreign court order
  • USCIS / DS-160 Supporting Affidavit — US visa support
  • UKVI / Home Office Sponsor Declaration — UK visa support
  • Australian DHA Statutory Declaration — Form 888 + Form 1229
  • Verification Affidavit for degree / transcript / professional licence
  • Insurance Claim Affidavit — property / life / marine
  • AMLA / FATCA / CRS Self-Certification under Oath

5-step workflow — draft to Apostille

  • Step 1 (D-3): send your draft + destination country + purpose → our team reviews wording for both Thai law and destination requirements
  • Step 2 (D-2): book Bangkok office, provincial office, or on-site visit (extra fee)
  • Step 3 (D-Day): AMLA CDD (passport + visa + source of document) → in-person oath / affirmation → signature → seal → Jurat (20–45 minutes)
  • Step 4 (D+1 to D+3): MFA — Apostille 2 business days (HCCH (in force for Thailand 28 February 2027)) or Authentication 1 day express / 3 days standard
  • Step 5 (D+3 to D+5): for non-HCCH destinations → Embassy Legalization per the embassy's queue (typically 5–14 days)

Fixed-fee pricing

  • Standard Oath/Affirmation (1 document EN/TH, BKK office) — THB 1,500–3,500 · same-day
  • Multi-page bundle — quote on request (phone / LINE / email)/extra page, capped quoted on request
  • Provincial / on-site (hospital / hotel / home) — +THB 2,500–5,000 + actual travel cost
  • Languages other than EN/TH (JP/KR/CN/AR/DE/FR) — quote on request (phone / LINE / email) (MFA-certified translator required)
  • MFA Apostille — quote on request (phone / LINE / email) courier (BKK same-day)
  • MFA Authentication — Standard THB 800 (3 days) / Express THB 2,500 (1 day)
  • Embassy Legalization (non-HCCH) — embassy fee + quote on request (phone / LINE / email) coordination
  • No hidden fees — written fixed-fee quote with scope lock + 100% refund if a document we produced is rejected due to our error

Risk Shields — what we will never do

  • ❌ Never administer oath by Zoom / video / phone (Reg. 2546 § 19 requires physical presence)
  • ❌ Never backdate the oath (Penal § 264 + Notarial licence revocation)
  • ❌ Never administer oath on content we know to be false (Code of Ethics § 11 + Penal § 177)
  • ❌ Never allow proxy signing (Penal §§ 264 + 268, up to 5 years)
  • ❌ Never accept contingency or asset-share fees (Code of Ethics § 11)
  • ❌ Never use machine translation for official documents (ISO 17100 TEP only)
  • ❌ Never issue Apostille outside the MFA channel (only the Department of Consular Affairs is competent)
  • ❌ Never share client documents without written consent (PDPA § 26)

Attorney credential verification

  • Notarial Services Attorney licence number verifiable on the Lawyers Council website
  • Notarial Services Course completion certificate (60 hours + biennial CLE)
  • Signature and notarial seal registered with the MFA Department of Consular Affairs (used for Apostille verification)
  • Team of ≥ 5 Notarial Attorneys to manage conflicts of interest / recusal
  • Professional Indemnity Insurance ≥ THB 10 million

Attorney credential verification

Frequently asked questions

I have no religion — can I use Affirmation instead of Oath?

Yes, with identical legal effect under Lawyers Council Reg. 2546 § 18. The wording becomes 'I solemnly, sincerely and truly affirm…' instead of 'I swear by Almighty God…'. US/UK/AU/EU destinations accept Affirmation universally.

Can I swear via Zoom or video call?

No. Reg. 2546 § 19 requires the oath to be administered in the physical presence of the Notarial Attorney. Remote Online Notarization (RON) has no legal effect in Thailand as of June 2026. If the declarant is overseas, either travel to Thailand or use a Notary Public in your country + Apostille + Thai translation.

What are the penalties for false swearing?

Thai Penal § 177 (false oath) up to 7 years + fine; § 137 (false statement to officer) up to 6 months; § 264 (forgery) up to 3 years; § 268 (use of forged document) up to 3 years. Destination-country penalties may add (US 18 USC § 1621 perjury up to 5 years; UK Perjury Act 1911 up to 7 years).

How long does it take end-to-end?

Oath/Affirmation + Jurat: same-day (20–45 min/document). MFA Apostille: 1–3 business days (HCCH (in force for Thailand 28 February 2027)). Embassy Legalization (non-HCCH): 5–14 days. End-to-end 1–5 days for HCCH destinations, 7–21 days for non-HCCH.

What is the all-in cost?

Fixed-fee quote covers (1) Notarial Attorney fee (2) MFA Apostille/Authentication (3) courier (4) translation if any (5) travel for on-site. Standard 1 doc quote on request (phone / LINE / email); with MFA Apostille quoted on request; with Embassy Legalization quoted on request. No surprises.

I am too ill to come to the office — can the attorney come to me?

Yes — on-site service at hospital / home / hotel. Surcharge THB 2,500–5,000 + actual travel. Declarant must have full mental capacity and two witnesses must be present. If a treating physician determines incapacity we cannot administer the oath.

Can I use this for USCIS / UKVI / Australian DHA?

Yes — Affidavit / Statutory Declaration sworn before a Thai Notarial Attorney + MFA Apostille (HCCH (in force for Thailand 28 February 2027)) is accepted by USCIS, UKVI, Australian DHA, Canadian IRCC and NZ Immigration as a Hague Apostille document (US/UK/AU/NZ/CA all HCCH contracting states).

Can you do this outside Bangkok?

Yes — Notarial Attorneys in Phuket, Pattaya, Chiang Mai, Hua Hin, Krabi, Samui. Same fee as BKK + quote on request (phone / LINE / email)/day travel. MFA Apostille handled centrally in Bangkok via EMS Express (+1 day).

How is my personal data protected?

ISO/IEC 27001 servers in Thailand, AES-256 + HSM at rest, TLS 1.3 in transit, MFA + biometric access, full audit logging, 10-year retention (notarial standard), DPO registered with the PDPC. Subject access: dpo@notary.co.th. Sensitive personal data under PDPA § 26.

Is the first consult free?

Yes — no fee, no obligation. LINE us (1) the draft document (2) destination country (3) purpose (visa/court/bank/degree) (4) timeline. Within one business day you receive an Oath Roadmap + wording suggestions + fixed-fee quote + timeline. Lawyer-client privilege from the first message.

แหล่งอ้างอิง / Authority References

16,168+ clients served

ลูกค้าจริง 60+ สัญชาติทั่วโลก ใช้บริการ Notary, แปลรับรอง, MFA และสถานทูตกับเรา

Verified clients

  • "ทีมงานช่วยจัดเตรียมหนังสือมอบอำนาจสำหรับใช้ที่ออสเตรเลียได้รวดเร็วมาก พร้อมประสานงาน NAATI ครบจบในที่เดียว"

    K. PimPOA → NAATI · 2025

  • "Very professional notary service. Document was certified, translated and ready for the UK embassy in two business days."

    Daniel R. (UK)Affidavit → UK Embassy

  • "ใช้บริการรับรอง Affidavit + รายชื่อผู้ถือหุ้นเพื่อจดทะเบียนสาขาที่สิงคโปร์ ทีมงานละเอียดและตอบกลับไว"

    บริษัทคู่ค้าCorporate Pack · 2025

Free consult: notarial oath & affirmation service

Send your draft document and destination country via LINE — receive an Oath Roadmap + fixed-fee quote within one business day

LINE chatNotary Public hub

Playbook: affidavits and statutory declarations for overseas use

Short answer: An affidavit is a statement of facts confirmed by the deponent and signed before a Notarial Services Attorney. The attorney certifies that the person appeared and signed, not that the contents are true. The document is then legalised at the Department of Consular Affairs and, where the receiver requires it, at the destination embassy.

Documents to prepare

Deponent

  • • Original passport or Thai ID card
  • • Draft statement setting out facts in numbered paragraphs, with date and place
  • • Supporting exhibits such as registrations, contracts, receipts or photographs

For foreign proceedings

  • • The wording or template required by the foreign lawyer or court
  • • Translation into the destination language accepted by the receiver

Corporate deponent

  • • Company affidavit and evidence of the signatory's authority
  • • Internal records supporting the stated facts, such as minutes or memoranda

Process steps

  1. 1. Define the facts to be stated

    Identify what the receiver needs confirmed and draft numbered paragraphs limited to the deponent's own knowledge.

    ⏱ 1–3 business days (estimate)

  2. 2. Draft and attach exhibits

    Reference exhibits by matching numbers and avoid opinions or legal conclusions.

    ⏱ 1–3 business days (estimate)

  3. 3. Sign before a Notarial Services Attorney

    The deponent appears in person; the attorney records the identification and certifies the signature.

    ⏱ Same day

  4. 4. Legalise at Consular Affairs

    Have the certifying attorney's seal and signature authenticated before the next layer.

    ⏱ 2–5 business days (estimate)

  5. 5. Embassy legalisation and delivery

    Legalise at the destination embassy where required, then deliver the complete set through an accepted channel.

    ⏱ 3–15 business days (estimate)

What to watch out for

  • • Opinions or legal conclusions inside the statement reduce the weight the receiver gives it.
  • • Exhibits referenced without matching numbers are commonly sent back for correction.
  • • Signing before meeting the attorney invalidates the signature certification.
  • • False statements carry legal consequences both in Thailand and at the destination.

Affidavit compared with a certified true copy

CriterionAffidavitCertified true copy
Function of the documentConfirms facts within the signatory's knowledgeConfirms the copy matches the original shown
What is certifiedThe deponent's appearance and signatureThe comparison between copy and original
Main riskStatements beyond the signatory's own knowledgeMissing pages or an unreadable copy
How they combineUsually paired with certified exhibitsUsually forms an exhibit to an affidavit

We advise, not just execute

  • • Separate provable facts from opinion that does not belong in the statement
  • • Structure exhibits and cross-references consistently across the bundle
  • • Align the wording with the destination lawyer before the signing appointment
  • • Sequence certification layers to meet the foreign filing deadline

When a foreign filing date is fixed, our advisers help draft, organise the exhibits and run every certification layer in time. Send us the case details to start.

All durations are working-day estimates excluding agency queues, and are not a guarantee of any authority's decision.

Sources: สภาทนายความในพระบรมราชูปถัมภ์ · กองสัญชาติและนิติกรณ์ กรมการกงสุล กระทรวงการต่างประเทศ · Last reviewed: 2026-08-11

Document and legalization advisers with 15+ years of practice

We advise throughout the matter, not just process paperwork

Before we start, we read your actual documents and confirm the legalization route matches what the receiving authority asks for. During the work we report progress, and after delivery we still answer questions about how to submit the file.

Before we start — document risk review

  • Check that names, dates and document numbers match across every page
  • Confirm whether the receiving body needs originals, certified copies or digital files
  • Tell you early if a document must be reissued or re-extracted first

While the matter runs — filing and status updates

  • Report which step is in progress with working-day estimates
  • Respond immediately when an authority requests extra documents
  • Confirm official fees before each filing step

After delivery — support until the file is usable

  • Explain how to submit the file to the destination authority or embassy
  • Keep a copy on record so extra sets can be issued later
  • Answer follow-up questions when the destination asks for supporting papers

We prepare documents to the requirements of the receiving authority. Any approval decision remains at that authority's discretion.

Send your documents on LINE for a preliminary review, a recommended legalization route and a written quote.

Ask on LINE @Thainotary Call 094-895-8999
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Service steps at a glance and the documents you need first

An affidavit is a statement of facts confirmed by the deponent and signed before a Notarial Services Attorney. The attorney certifies that the person appeared and signed, not that the contents are true. The document is then legalised at the Department of Consular Affairs and, where the receiver requires it, at the destination embassy.

How the work runs

  1. Define the facts to be stated — 1–3 business days (estimate)
  2. Draft and attach exhibits — 1–3 business days (estimate)
  3. Sign before a Notarial Services Attorney — Same day
  4. Legalise at Consular Affairs — 2–5 business days (estimate)
  5. Embassy legalisation and delivery — 3–15 business days (estimate)

Documents to prepare first

  • • Original passport or Thai ID card
  • • Draft statement setting out facts in numbered paragraphs, with date and place
  • • Supporting exhibits such as registrations, contracts, receipts or photographs
  • • The wording or template required by the foreign lawyer or court
  • • Translation into the destination language accepted by the receiver
  • • Company affidavit and evidence of the signatory's authority

When a foreign filing date is fixed, our advisers help draft, organise the exhibits and run every certification layer in time. Send us the case details to start.

Durations are working-day estimates excluding agency queues and are not a guarantee of any decision.

A lawyer explaining a document to a client across a meeting table in a law office
Discuss scope and required documents with our team by phone, LINE or email.

Official sources & further reading

Statements on this page follow the authorities below. Confirm current requirements with the authority before filing. Last reviewed 2026-07-29.

Related questions

When was this page last reviewed?
Each page shows its last-reviewed date in the sources section. Authority requirements change, so confirm current conditions with the receiving authority before proceeding.
What is the fastest way to reach you?
Call or message on LINE during business hours for an initial route check, and send legible photos of the documents by email or LINE so the scope can be assessed accurately.
Where do I start if I am unsure which certification I need?
Start with three questions: which authority will receive the document, in which country, and by what date. Those answers determine the authentication route, the translation language and the full sequence.
Why are fees not published on the site?
Scope varies widely with document count, language and the consular steps involved, so we quote against the actual work and confirm details by phone, LINE or email before starting.

Related services

Fees are not published online — ask our team by phone, LINE or email for a scope-based quote.