Certified Translation by Thai Notarial Attorneys — Accepted by MFA & Embassies
Our Bangkok law firm produces certified translations signed and sealed by Notarial Services Attorneys (Lawyers Council of Thailand) — the only translation format MFA Thailand and Bangkok-based embassies accept for legalization.
Because Thailand does not have a European-style 'sworn translator' system, the notarial certified translation is the de facto international standard. Documents heading abroad should be translated in this format from the start to avoid re-translation costs.
Our practice maintains 6 in-house Notarial Services Attorneys plus subject-matter translators across legal, medical, engineering, and financial domains, covering 10+ languages. Every translation passes Translate → Edit → Proofread → Notarize.
Notary attorneys
Our Bangkok law firm produces certified translations signed and sealed by Notarial Services Attorneys (Lawyers
6Notary attorneys
Provinces
Provinces · 50+77
77Provinces
Clients served
16,168+ clients · 60+ nationalities
16,168+Clients served
Turnaround
Send documents via LINE or email — we reply within one business day with a fixed quote and timeline.
≤24hTurnaround
What you need to know
Document types we translate most often
Civil registry — birth / death / marriage / divorce certificates, Single Status affirmations
Academic — degrees, transcripts, certificates (for overseas study or employment)
Legal — court judgments, contracts, powers of attorney, affidavits
Financial — bank statements, bank certificates, income tax returns
Medical — medical certificates, treatment records, vaccination records
Criminal — Royal Thai Police Clearance Certificate
Real estate — Chanote land title, sale-and-purchase agreements, lease agreements
Languages supported
Thai ↔ English (native-grade both directions)
Thai ↔ Chinese (Mandarin, Simplified + Traditional)
Thai ↔ Japanese / Korean
Thai ↔ German / French / Spanish / Italian
Thai ↔ Russian / Arabic / Portuguese
Thai ↔ Vietnamese / Burmese / Khmer / Lao
Fixed-fee pricing
Quoted by document type — no surprise hourly fees.
Civil registry / Single Status — quote on request (phone / LINE / email), includes notarial certification
Transcript / degree — quote on request (phone / LINE / email)
DBD corporate short set — quote on request (phone / LINE / email)
Contracts / judgments — quote on request (phone / LINE / email) (depending on complexity)
Non-English target languages (CN/JP/DE etc.) — +30–60% per language
24-hour express service — +50% surcharge (subject to availability)
Quality process
Every assignment passes four stages: (1) subject-matter translator, (2) editor verifying terminology, (3) independent proofreader, (4) Notarial Services Attorney certification. We guarantee free re-translation if a destination authority rejects the work on translation grounds.
Quality process
Every assignment passes four stages: (1) subject-matter translator, (2) editor verifying terminology, (3) independent proofreader, (4) Notarial Services Attorney certification. We guarantee free re-translation if a destination authority rejects the work on translation grounds.
Frequently asked questions
Can your certified translation substitute for a European sworn translation?
Yes for use with MFA Thailand and all Bangkok embassies. Thailand does not have a European-style sworn translator system; the notarial certified translation is the recognized international substitute.
Do I still need MFA and embassy steps after translation?
Depends on the destination. For domestic Thai use the certified translation alone is enough. For foreign use, MFA + destination embassy follow — we handle the entire chain in one engagement.
How fast is turnaround?
Standard 1–3 working days; 24-hour express available. Larger projects quoted on a case basis.
Do you translate contracts, white-papers, or full books?
Yes. Subject-matter teams cover legal, finance, engineering, and medical; we quote by word count and complexity.
Do you need original documents to translate?
Not for the translation itself — a high-resolution scan suffices. Originals are needed only for downstream MFA/embassy filing.
What is the quality guarantee?
Free re-translation if a destination authority rejects on translation grounds. Re-issuance of certified copies is also free for 10 years from our archive.
What is the starting price?
Short civil-registry documents start at สอบถามค่าบริการทางโทร/LINE/อีเมล including notarial certification; contracts สอบถามค่าบริการทางโทรศัพท์ / LINE / อีเมล; non-English languages add 30–60%.
How long do you retain files?
Soft copies are archived for 10 years so we can re-issue certified copies on demand.
Playbook: certified translation for government and overseas use
Short answer: A usable translation must mirror the source line by line, spell names exactly as in the passport, and follow the certification format the receiving party requires - a translator's certification, consular legalization in Thailand, or further certification at the destination mission. Confirm that format before translation starts.
Documents to prepare
Individuals
• Clear originals or scans of every page, including reverse-side seals
• Passport bio page for the authoritative spelling of names
• Name-change records where older documents differ
• Any format requirements issued by the receiving party
Companies
• Current company affidavit and objectives
• Complete financial statements or contracts with all annexes
• An internal glossary if terminology must stay consistent across filings
Foreign nationals
• Foreign documents already certified in the country of origin
• Passport original or a legible copy
• Clear statement of target language and receiving authority
Process steps
1. Confirm the required certification format
Establish whether the receiver needs a translator's certification, consular legalization, or an extra embassy layer.
⏱ Same day
2. Translate and lock proper-name spelling
Render every element including seals, signatures and marginal notes, and lock personal and place names against the passport.
⏱ 1-3 working days (estimate)
3. Second-pass review before certification
A second reviewer compares the translation to the source line by line before the certification statement is issued.
⏱ 1 working day (estimate)
4. File for legalization when required
Where the receiver requires it, submit the source and translation to the Legalization Division of the Department of Consular Affairs.
⏱ 2-5 working days (estimate, excluding agency queues)
5. Deliver and archive a reference copy
Deliver the sealed set unopened and archive a digital copy for later verification requests.
⏱ 1 working day (estimate)
What to watch out for
• Name spelling that differs from the passport is a leading cause of rejection.
• Omitting seals or marginal notes makes the set incomplete.
• Reusing an old translation against a newly issued original breaks document numbering.
• Detaching the translation from a bound source invalidates the certification.
General translation versus certified translation for official use
Criterion
General translation
Certified translation
Acceptance by authorities
Mainly for internal understanding
Prepared to the receiving authority's format
Review depth
Usually a single pass
Two-pass review with locked proper names
Onward certification
Not structured for legalization filing
Assembled ready for legalization and embassy layers
Traceability
No reference system
Reference number and archived copy for verification
We advise, not just execute
• Check destination requirements before translation begins so nothing is redone
• Advise whether to translate before or after the source is certified
• Flag mismatched names and dates across a document set
• Stay available if the receiver asks for amendments or extra documents
If you would rather not risk a rejection over small details, our team handles requirement checks, translation, review and legalization end to end - talk to us before you start.
All durations are working-day estimates excluding agency queues, and are not a guarantee of any authority's decision.
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.
These are illustrative composites of common certified-translation patterns, not individual client records, and are not a guarantee of any authority's decision. Durations are approximate working-day ranges.
Thai marriage certificate translated into English for MFA legalisation
Illustrative scenarios, not individual client records · Last reviewed 2026-08-09
Why certified translations get rejected — and how to fix it
Short answer: Translations fail on name spellings that diverge from official records, untranslated seals and signatures, Buddhist/Gregorian date conversion errors, and missing translator certification in the recipient's required wording. Reissue a corrected version with the accepted certification statement.
Names or places spelled inconsistently across the bundle
Underlying cause
Documents were translated separately without a shared glossary
Prevent before filing
Fix one spelling standard from the passport and civil registry
How to fix a rejection
Reissue the whole set with consistent spelling
Estimated time cost
Adds roughly 1–4 working days (estimate)
Seals and signatures were not rendered
Underlying cause
The translator skipped non-body elements
Prevent before filing
Require every element to be described, including marginal text
How to fix a rejection
Add seal and signature descriptions and reissue
Estimated time cost
Adds roughly 1–3 working days (estimate)
Dates off by 543 years
Underlying cause
Buddhist-era conversion error or unannotated retention
Prevent before filing
State the calendar explicitly and re-check every date
How to fix a rejection
Correct and reissue with a conversion note
Estimated time cost
Adds roughly 1–2 working days (estimate)
Translator certification wording not accepted
Underlying cause
Each recipient prescribes different wording and translator details
Prevent before filing
Request the recipient's certification statement template first
The recipient also required MFA or embassy certification of the translation
Prevent before filing
Clarify whether certification of the translation itself is required
How to fix a rejection
Run the translation through the prescribed chain
Estimated time cost
Adds roughly 3–10 working days (estimate)
We build a proper-noun glossary for the whole bundle, translate every seal, and carry the certification chain through — send your documents for a pre-check in any language pair.
Durations are working-day estimates excluding agency queues, and are not a guarantee of any authority's decision.
Service steps at a glance and the documents you need first
A usable translation must mirror the source line by line, spell names exactly as in the passport, and follow the certification format the receiving party requires - a translator's certification, consular legalization in Thailand, or further certification at the destination mission. Confirm that format before translation starts.
How the work runs
Confirm the required certification format — Same day
Translate and lock proper-name spelling — 1-3 working days (estimate)
Second-pass review before certification — 1 working day (estimate)
File for legalization when required — 2-5 working days (estimate, excluding agency queues)
Deliver and archive a reference copy — 1 working day (estimate)
Documents to prepare first
• Clear originals or scans of every page, including reverse-side seals
• Passport bio page for the authoritative spelling of names
• Name-change records where older documents differ
• Any format requirements issued by the receiving party
• Current company affidavit and objectives
• Complete financial statements or contracts with all annexes
If you would rather not risk a rejection over small details, our team handles requirement checks, translation, review and legalization end to end - talk to us before you start.
Durations are working-day estimates excluding agency queues and are not a guarantee of any decision.
Translations filed with authorities must carry the translator's certificate of accuracy alongside the source text.
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.
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.