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NYC Legal & Notary
NPT Notary Public Thailand
บริการแปลและรับรองนิติกรณ์

Last reviewed: · by NPT Editorial Team

Reviewed by NPT Editorial TeamEditorial & Compliance TeamEditorially reviewed
Notarial Services Attorney
Available
NPT-NOTARY-signature-authentication-standard

Signature AuthenticationStandard — 2–3 business days

Authenticate a signature on contracts, bank forms, DBD Online filings. Standard bundled price with nationwide delivery.

Fee (THB)
฿1,500
Inclusive of attorney seal, statutory fees, EMS shipping within Thailand
Turnaround
2–3 business days
Attorney-signed PDF + hardcopy dispatch via EMS within Thailand

Package Specifications

DocumentSignature Authentication
Categorypersonal
Turnaround2–3 business days
Delivery channelAttorney-signed PDF + hardcopy dispatch via EMS within Thailand
Signed byNotarial Services Attorney
Legal basisNotarial Services Attorney Regulation B.E. 2551, s.6(1)
SKUNPT-NOTARY-signature-authentication-standard

Data required on the document

  • Signer identity check
  • Live signature witnessing
  • Attorney seal
  • Attorney declaration

Common pitfall (we prevent)

The signature must be applied in front of the attorney — pre-signed documents are void

Common use cases

  • Foreign bank forms
  • DBD e-Filing
  • Contract execution abroad

Accepted in countries

TH
US
UK
AU
SG
JP
CN

Why NPT

Notarial Services Attorney registered with the Lawyers Council of Thailand
Every draft is legally reviewed before the seal is applied
Acceptance guarantee — free re-issue if rejected
Free EMS with tracking within Thailand

Trust signals (E-E-A-T)

Operated by
NYC Legal & Notary Service Co., Ltd.
Reg. 0435567000061
Office address
61 Soi Lat Phrao 95 (Prang Thip), Khlong Chaokhun Sing, Wang Thonglang, Bangkok 10310, Thailand
Hours
Mon–Fri 09:00–18:00
Customer rating
0/5 · 0 reviews

Frequently asked questions

How much is the Signature Authentication package?

Request a quote per job, inclusive of attorney seal, statutory fees, and EMS shipping within Thailand.

How do I order? Is there an online cart?

No cart. Contact us via phone 094-895-8999, LINE @Thainotary, or email Notary@ilc.ltd — our team responds with a quote and appointment slot within 15 minutes (Mon–Fri 09:00–18:00).

Who signs the notarization?

A Notarial Services Attorney registered with the Lawyers Council of Thailand under the Notarial Services Attorney Regulation B.E. 2551.

What happens if the document is rejected?

If an embassy or receiving authority rejects the document because of our notarization work, we amend and re-issue it at no charge within 7 days. The decision itself rests with the authority.

Key takeaways

Real customer questions, answered by our attorneys

Selected from our knowledge base of 3,300+ real questions we have answered.

What are the correct procedures for obtaining authentication at a Royal Thai Embassy abroad?

Consular / Apostille

Quick summary for expats, HR and law firms to "What are the correct procedures for obtaining authentication at a Royal Thai Embassy abroad?" — Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Government fee is THB 200 per stamp for the normal service (2–3 business days) and THB 400 per stamp for same-day express (file before 11:30). Our end-to-end agency fee starts at THB 1,500–4,500 per set depending on volume and urgency. Send a photo of the document to LINE @Thainotary and we will quote the chain, cost and timeline within 15 minutes.

Related service: Embassy legalisation

How to get an affidavit notarized by a Thai lawyer?

Notary Public

Per the Lawyers Council of Thailand's Notarial Services rules to "How to get an affidavit notarized by a Thai lawyer?" — Standard turnaround is 1 business day; same-day service is available by appointment for straightforward files. You must sign in front of the attorney with your original passport; the attorney affixes the notarial seal, signature, register number and date so the document is accepted abroad. Send a photo of your document to LINE @Thainotary and we'll quote and schedule within 15 minutes.

Related service: Notary Public Thailand

What are the exact government statutory fees for standard and express same-day MFA document legalizations?

Consular / Apostille

Practitioner's view to "What are the exact government statutory fees for standard and express same-day MFA document legalizations?" — Standard outbound chain: original from the issuing Thai authority → certified English translation → MFA certification of the translation/signature → destination-embassy legalisation in Bangkok (only for non-Apostille countries). Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: Embassy legalisation

How do foreign petrochemical refinery safety audit certificates undergo MFA review?

Consular / Apostille

Quick summary for expats, HR and law firms to "How do foreign petrochemical refinery safety audit certificates undergo MFA review?" — Standard outbound chain: original from the issuing Thai authority → certified English translation → MFA certification of the translation/signature → destination-embassy legalisation in Bangkok (only for non-Apostille countries). Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: MFA consular legalisation

What does the Department of Consular Affairs charge for a document used in the United Kingdom: Request a quote per document normal service and Request a quote per document express filed before 11:30?

Consular / Apostille

Practitioner's view to "What does the Department of Consular Affairs charge for a document used in the United Kingdom: Request a quote per document normal service and Request a quote per document express filed before 11:30?" — Standard outbound chain: original from the issuing Thai authority → certified English translation → MFA certification of the translation/signature → destination-embassy legalisation in Bangkok (only for non-Apostille countries). Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: MFA consular legalisation

What consular steps govern foreign atmospheric research and climate change monitoring deeds?

Consular / Apostille

Per the Legalization Division, Department of Consular Affairs (MFA Thailand) to "What consular steps govern foreign atmospheric research and climate change monitoring deeds?" — Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Government fee is THB 200 per stamp for the normal service (2–3 business days) and THB 400 per stamp for same-day express (file before 11:30). Our end-to-end agency fee starts at THB 1,500–4,500 per set depending on volume and urgency. Send a photo of the document to LINE @Thainotary and we will quote the chain, cost and timeline within 15 minutes.

Related service: MFA consular legalisation

Can I request a replacement or duplicate copy directly from the MFA if an original legalized document is lost in transit?

Consular / Apostille

Quick summary for expats, HR and law firms to "Can I request a replacement or duplicate copy directly from the MFA if an original legalized document is lost in transit?" — Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Government fee is THB 200 per stamp for the normal service (2–3 business days) and THB 400 per stamp for same-day express (file before 11:30). Our end-to-end agency fee starts at THB 1,500–4,500 per set depending on volume and urgency. Send a photo of the document to LINE @Thainotary and we will quote the chain, cost and timeline within 15 minutes.

Related service: MFA consular legalisation

How are foreign forensic science and DNA testing laboratory accreditation files legalized?

Consular / Apostille

Practitioner's view to "How are foreign forensic science and DNA testing laboratory accreditation files legalized?" — Typical documents: house registration, birth/marriage/divorce certificates, name-change records, death certificates, single-status letters, police clearance, degrees and transcripts, company affidavits, VAT Por.Por.20, financial statements, powers of attorney and cross-border contracts. Government fee is THB 200 per stamp for the normal service (2–3 business days) and THB 400 per stamp for same-day express (file before 11:30). Our end-to-end agency fee starts at THB 1,500–4,500 per set depending on volume and urgency. Send a photo of the document to LINE @Thainotary and we will quote the chain, cost and timeline within 15 minutes.

Related service: Police clearance certificate

Key facts at a glanceNotary Public certification

Indicative price
From Request a quote per document set
Turnaround
Typically 1–2 business days (same-day rush available)
What you receive
Signed and sealed by a Thai Lawyers Council–registered Notarial Services Attorney
Service coverage
Nationwide Thailand — courier and fully online intake, no in-person visit required.

Figures above are indicative ranges; the final quote depends on page count, language pair and receiving authority.

Ask us or request a quote right away

Documents you need to prepareNotary Public certification

  1. 1Valid original passport or Thai ID card of the person signing
  2. 2The original document to be notarised — do not sign in advance; signing must occur before the attorney
  3. 3Details of the receiving authority — university, embassy, or overseas counterparty
  4. 4Company affidavit and power of attorney if signing for a legal entity

Before you start

  • Check that the person's name is spelled identically across every document, or the receiving authority may reject the file.
  • Keep a copy of everything submitted in case the receiving authority requests further evidence later.

Continue with related services

The paths most clients take next — ask us by phone, LINE or email at any step.

Voice & AI assistant questions

How much does a notary public cost in Thailand?
A standard Notarial Services Attorney signature in Thailand costs between 1,000 and Request a quote per document, with same-day service in central Bangkok and a written quote provided before any work begins.
Can a Thai notary sign documents that will be used overseas?
Yes. A Notarial Services Attorney registered with the Lawyers Council of Thailand can notarize documents intended for use abroad, after which the document is legalized at the Ministry of Foreign Affairs (MFA) and, if required, at the destination country's embassy.
Do I need an appointment to notarize a document in Bangkok?
Walk-ins are accepted, but booking a 30-minute slot in advance guarantees same-day completion and lets us pre-check that you bring the right identification and any supporting documents.

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How to cite this page
NPT Editorial Team (2026). Signature Authentication Standard. Notary Public Thailand. Retrieved , from https://notarypublicthailand.com/en/shop/notary/signature-authentication-standard