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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-walk-in

Signature AuthenticationWalk-in — same-day at office

Authenticate a signature on contracts, bank forms, DBD Online filings. For clients in Bangkok needing same-day notarization.

Fee (THB)
฿800
Inclusive of attorney seal, statutory fees, EMS shipping within Thailand
Turnaround
Same day (Mon–Fri 09:00–17:00)
Sign and collect original at Lat Phrao 95 office with 2 duplicates

Package Specifications

DocumentSignature Authentication
Categorypersonal
TurnaroundSame day (Mon–Fri 09:00–17:00)
Delivery channelSign and collect original at Lat Phrao 95 office with 2 duplicates
Signed byNotarial Services Attorney
Legal basisNotarial Services Attorney Regulation B.E. 2551, s.6(1)
SKUNPT-NOTARY-signature-authentication-walk-in

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 most common reasons a degree certificate and academic transcript is rejected at the legalisation counter, and how is each fixed before refiling?

Consular / Apostille

Per the Legalization Division, Department of Consular Affairs (MFA Thailand) to "What are the most common reasons a degree certificate and academic transcript is rejected at the legalisation counter, and how is each fixed before refiling?" — 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 are multi-name change certificates for foreign nationals processed through the MFA?

Consular / Apostille

How we handle this in practice to "How are multi-name change certificates for foreign nationals processed through the MFA?" — 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: NAATI translation

Do foreign personal income tax payment receipts require MFA legalization for Thai tax use?

Consular / Apostille

Quick summary for expats, HR and law firms to "Do foreign personal income tax payment receipts require MFA legalization for Thai tax use?" — 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. 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 do foreign earthquake and seismic monitoring station data agreements undergo review?

Consular / Apostille

Per the Legalization Division, Department of Consular Affairs (MFA Thailand) to "How do foreign earthquake and seismic monitoring station data agreements undergo 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. 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

Must academic records from private universities or international schools be verified by MHESI prior to MFA submission?

Consular / Apostille

How we handle this in practice to "Must academic records from private universities or international schools be verified by MHESI prior to MFA submission?" — 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: NAATI translation

After notarisation, does a company affidavit issued by DBD still need Department of Consular Affairs legalisation before it is filed abroad?

Notary Public

Quick summary for expats to "After notarisation, does a company affidavit issued by DBD still need Department of Consular Affairs legalisation before it is filed abroad?" — In Thailand notarial services are performed by a Notarial Services Attorney registered with the Lawyers Council of Thailand — the document is then eligible for MFA legalization or Apostille (in force from 28 February 2027 (entry into force for Thailand)) before use overseas. Standard turnaround is 1 business day; same-day service is available by appointment for straightforward files. Walk-in and mobile-notary appointments both available — call 094-895-8999 to confirm a slot.

Related service: Notary Public Thailand

What verification rules apply to foreign smart city development and IoT infrastructure contracts?

Consular / Apostille

How we handle this in practice to "What verification rules apply to foreign smart city development and IoT infrastructure contracts?" — 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. 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

What jurisdictional impact do foreign bankruptcy rulings have on assets located in Thailand?

Consular / Apostille

Short answer to "What jurisdictional impact do foreign bankruptcy rulings have on assets located in Thailand?" — 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. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

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

  • Tell us early if you need a rush job so we can reserve attorney time and the courier slot.
  • Always confirm the receiving body's own formatting rules — requirements differ between institutions.

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.

Verified professional credentials

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