NAATI certified translations are produced by translators credentialed by the National Accreditation Authority for Translators and Interpreters (Australia), accepted by the Department of Home Affairs and Australian courts.
Key takeaways
Translator credential numbers can be verified on NAATI's public register
NAATI translations are used mainly by the Department of Home Affairs, universities and state agencies
Some documents also need Thai-side certification before or after translation
Requirements differ by receiving agency — confirm before ordering
Process at a glance
Step
Performed by
Documents needed
Approximate time
1. Submit the file and name the Australian receiving body
Applicant
Clear scan + passport name spelling
approx. 1 day
2. Translation by a NAATI-certified translator
NAATI-certified translator
Source file
approx. 3–5 working days
3. Stamp, certification number and signature applied
NAATI-certified translator
Finished translation
approx. 1 working day
4. Delivery as PDF, plus hard copy where required
Service provider
Certified translation
approx. 5–7 working days end to end
Durations are estimates and depend on the responsible authority's queue. Always confirm current requirements with the receiving body before filing.
Additional frequently asked questions
What if the name spelling differs from the passport?
The passport spelling governs. Where the source document spells it differently, the translator adds an explanatory note so the reviewing officer can link the records.
Does the translation expire?
The translation itself does not expire, but translator certification runs in renewal cycles and the receiving body may ask for a freshly issued source document, so confirm the rules before filing.
What is a NAATI-certified translation?
A translation produced by a translator certified by NAATI, Australia's National Accreditation Authority for Translators and Interpreters. Australian government bodies treat it as the standard for foreign-language documents filed with an application.
Which Australian bodies require it?
Most commonly the Department of Home Affairs, state road authorities such as VicRoads, universities and colleges, state registries of births, deaths and marriages, and professional skills-assessment bodies. Requirements vary by body.
Does a NAATI translation need further legalisation?
Australian bodies generally accept the certified translator's stamp without embassy involvement, though other legal proceedings may call for additional certification case by case.
Which languages and documents are covered?
Thai–English is the most requested pair, alongside other pairs with certified practitioners. Typical documents are birth certificates, house registration, marriage certificates, driving licences, transcripts and police clearance certificates. Scope and requirements are confirmed case by case by phone, LINE or email.
In depth: the real requirements and why documents get rejected — NAATI
Written from the competent authority's published rules, not marketing copy.
The documents most often handled under NAATI requirements are house registrations, birth certificates, marriage certificates, name-change records, academic transcripts, and police clearance certificates — each with its own points of scrutiny.
Conditions you actually have to clear
The language pair and direction must match the direction in which the practitioner is certified.
Every page and every element of the original must be covered, including pages that carry only a seal.
Most Australian authorities accept digitally signed translations, though some matters still call for a printed set.
Common causes of rejection
A translation prepared before, but signed after, the practitioner's certification expiry date.
Translating only the pages containing text and omitting seal-only or numbered blank pages.
Where a visa or registration deadline applies, allow time for the possibility that the assessor requests additional documents, rather than budgeting only for translation time.
Key facts at a glance — NAATI certified translation
Quotation
Send the documents for a case-specific quotation
Turnaround
5–7 business days
What you receive
NAATI-stamped PDF plus hard copy by post
Service coverage
Nationwide Thailand — courier and fully online intake, no in-person visit required.
Our staff checks page count, language pair and receiving authority before issuing a quotation.
Competent authority: NAATI — National Accreditation Authority for Translators and Interpreters, Australia
Practitioner guidance
✓Turnaround is approximately 5–7 working days depending on page count and language pair — confirm before fixing a lodgement date.
✓Documents filed with Australian authorities must be translated by a NAATI-certified translator, with the NAATI stamp and CPN visible on the translation.
✓NAATI translations do not require MFA or embassy legalisation unless the receiving body specifically asks for it.
✓Always submit the translation together with the source copy the translator worked from; assessors compare both.
✓Verify that the CPN printed on the translation is searchable in NAATI's verification system.
Pitfalls — why documents get rejected
!A translation without a NAATI stamp or without a verifiable CPN.
!Submitting the translation without the source copy it references.
!Name spelling differing from the passport used in the visa application.
!Reusing an old translation whose source document was later amended or reissued.
!An incomplete relationship-evidence set, triggering a request for further information.
In-depth questions and answers — NAATI certified translation
Answers follow the competent authority's published requirements, not marketing copy.
Which authority is competent for NAATI certified translation?
NAATI — National Accreditation Authority for Translators and Interpreters, Australia is the principal competent authority for NAATI certified translation. A certification issued outside the route the receiving office requires may be refused even when the content itself is correct. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
Where can the current requirements for NAATI certified translation be verified?
Check the notices published by NAATI — National Accreditation Authority for Translators and Interpreters, Australia. The official sources used on this page are https://www.naati.com.au/ · https://immi.homeaffairs.gov.au/. Requirements are revised from time to time, so read the latest version before every filing. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
What if our NAATI certified translation case has unusual conditions?
For edge cases — mismatched names across documents, foreign-issued records, or a tight deadline — have the set reviewed first, then reconfirm the conditions with NAATI — National Accreditation Authority for Translators and Interpreters, Australia. Ask our staff by phone, LINE or email for scope and timing (we do not publish fees on the page because they depend on the document type and destination). This is general guidance; requirements and processing times change — verify with the competent authority before filing.
How long does NAATI certified translation take?
Turnaround is not fixed: it depends on the queue and rules of NAATI — National Accreditation Authority for Translators and Interpreters, Australia, the document type, and the receiving office abroad. For that reason we do not publish a fixed figure. Plan a buffer before your real deadline and ask our staff by phone, LINE or email for the current queue before booking travel. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
Does the result of NAATI certified translation expire?
Validity is set by the receiving office, not by the service provider. Many offices accept only recently issued documents, so confirm the destination's window first and only then start the process with NAATI — National Accreditation Authority for Translators and Interpreters, Australia, to avoid the document expiring while it waits in the queue. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
Must the applicant appear in person for NAATI certified translation, or can it be delegated?
Some steps require the document owner to sign or appear; others accept a power of attorney. It depends on the rules of NAATI — National Accreditation Authority for Translators and Interpreters, Australia and on the document type, so confirm before booking an appointment rather than travelling and being turned away. Our staff can clarify by phone, LINE or email. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
Why is no price shown for NAATI certified translation on this page?
Scope varies widely per case — page count, languages, number of certification rounds, and the official fees charged by NAATI — National Accreditation Authority for Translators and Interpreters, Australia under its published schedule. A single headline figure would be misleading, so we quote against the actual documents. Send the details by phone, LINE or email for an assessment matched to your case. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
How should documents for NAATI certified translation be prepared to pass on the first submission?
Documents filed with Australian authorities must be translated by a NAATI-certified translator, with the NAATI stamp and CPN visible on the translation. The competent authority is NAATI — National Accreditation Authority for Translators and Interpreters, Australia. This is general guidance; requirements and processing times change — verify with the competent authority before filing.
Your case may have specific conditions — ask our staff directly.
• Member, Lawyers Council of Thailand (สภาทนายความ) — verify
• Registered certified translator, Ministry of Justice (Thailand) — verify
• Recognized agent for MFA Legalization Division, Thailand — verify
Consumer protection
• Transparent fees quoted in writing before any work begins — no hidden surcharges.
• Confidentiality: documents handled under a written non-disclosure undertaking.
• Direct human contact for questions and quotations by phone, LINE or email.
Composite cases similar to this page — NAATI certified translation
Composite cases assembled from commonly seen matters — not individual clients, no personal data.
driving licence from Surin for a state registry filing
an authorised representative of a Thai-registered company from Surin — a tight travel or filing deadline required resequencing the work
What we handled: tracked progress between steps and reported status along the way · prepared the translation and reconciled every name spelling against the passport · reviewed the source documents and flagged which ones needed re-issuing before work began · arranged the signing or lodgement appointment and listed what to bring
What clients usually ask in matters like this: who must certify the translation for it to be accepted at destination?
Indicative timeline: roughly 7–14 working days end to end
police clearance certificate from Chiang Rai for an Australian study application
a foreign national living in Thailand from Chiang Rai — the originals were issued abroad, so the origin-country chain had to be completed first
What we handled: sequenced the certification chain to match the destination authority's rules · arranged the signing or lodgement appointment and listed what to bring · tracked progress between steps and reported status along the way · prepared the translation and reconciled every name spelling against the passport
What clients usually ask in matters like this: who must certify the translation for it to be accepted at destination?
Indicative timeline: roughly 3–7 working days end to end
academic transcript from Canada for a citizenship application
a Thai national residing in Thailand from Canada — the spelling on older documents did not match the current passport
What we handled: reviewed the source documents and flagged which ones needed re-issuing before work began · arranged the signing or lodgement appointment and listed what to bring · sequenced the certification chain to match the destination authority's rules · prepared the translation and reconciled every name spelling against the passport
What clients usually ask in matters like this: if the destination rejects this set, do we start over from scratch?
Indicative timeline: roughly 7–14 working days end to end