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NAATI certified translation

Australian authorities do not ask whether a translation is accurate. They ask who certified it, and under which number.

A Thai birth certificate translated perfectly by a bilingual friend will still be rejected by an Australian department, while a plainer rendering carrying a valid NAATI credential is accepted without comment. The rule being applied is about the identity and accreditation of the translator, not about elegance of language. Our translation desk works to that rule first, then makes the English readable.

Short answer

Documents submitted to Australian government bodies from outside Australia must be translated by an accredited translator whose full name, credential number and contact details appear on the translation. NAATI certified Thai to English work is the safest route for migration, citizenship, skills assessment and tertiary admission files. Most Thai civil documents are turned around in two to four working days, and we can add notarial certification or Ministry of Foreign Affairs legalisation on the same file where the receiving body wants the original chain proved as well.

What NAATI accreditation actually guarantees, and what it does not

NAATI is the Australian body that credentials translators and interpreters. A certified translation identifies the practitioner, records their credential and carries their declaration that the English corresponds to the Thai source. That is the assurance the receiving officer wants: a named professional who can be checked and who has accepted responsibility. Nothing about accreditation changes the content of your document, so a Thai record that is internally inconsistent will simply produce an English version with the same inconsistency, now visible to the assessor.

This is why we read the Thai original before translating rather than after. Where a household registration spells a name differently from a passport, where a marriage record was amended by hand, or where a district office used an obsolete form, we tell you before the file is submitted and advise whether the underlying Thai record should be corrected first. Correcting a district record takes days; answering a request for further information from an overseas department takes months.

Accreditation also does not replace document legalisation. Some receiving bodies want the translation certified and nothing more; others want proof that the Thai document itself is genuine, which runs through the issuing authority, the Department of Consular Affairs and sometimes the destination embassy. We ask which of those two things your recipient wants, because ordering the wrong one wastes both money and weeks.

Which files typically need it

Partner and family visa applications carry the heaviest translation load: birth records, household registration, marriage or divorce records, name change registrations, police clearance, and often the statutory declarations of supporting witnesses. Because the assessor is building a picture of a relationship, consistency across every translated document matters more than any single page, and we translate a family file as one set with one glossary of names and place names rather than as separate jobs.

Skills assessment and professional registration files bring transcripts, degree certificates, professional licences and employment references. Institutional wording is where these fail: a Thai employer's letter that says a person 'assisted in accounting work' will be read literally by an assessing authority, so we translate faithfully and separately advise you on whether the Thai reference should be reissued with the detail your assessor actually needs.

Court and commercial files — judgments, company affidavits, contracts, powers of attorney — are handled by the same desk but reviewed by a lawyer as well, because a mistranslated clause in a contract is a legal exposure rather than an administrative delay.

How we work, and what you receive

You send clear scans or bring originals to any of our offices. We confirm the exact spelling of every name against your passport, translate, review, then issue the certified translation with the practitioner's declaration and credential details. You receive a digital copy suitable for online lodgement and, where required, printed copies for a paper file or for onward notarisation.

Where the destination authority requires more than translation, the same file continues through our notarial and legalisation desk: notarial certification for signatures and copies, Department of Consular Affairs legalisation for the Thai chain of authenticity, and embassy legalisation where the receiving country still demands it. Keeping the whole sequence in one office avoids the common failure where a translation is certified after the document has already been legalised, which forces the chain to be redone.

For applicants who are already abroad, everything can be handled remotely: scans in, certified files out by email, hard copies couriered. Where a signature is needed from you in person and you are outside Thailand, we tell you plainly which parts require an Australian notary or your nearest Thai embassy instead.

How the work runs, step by step

  1. Step 1

    Document review

    We read the Thai originals, check names against your passport, and flag anything in the Thai record that the receiving authority is likely to query.

  2. Step 2

    Scope confirmation

    We confirm what your recipient asked for: certified translation only, or translation plus notarial certification and consular legalisation.

  3. Step 3

    Translation and internal review

    Translation with one consistent glossary across the whole family or corporate file, then a second-pass review against the source page by page.

  4. Step 4

    Certification and issue

    The accredited practitioner's declaration and credential details are affixed, and you receive digital and printed versions.

  5. Step 5

    Onward legalisation where needed

    Notarial certification, Department of Consular Affairs legalisation and embassy steps, sequenced so nothing has to be repeated.

What you send us

  • The Thai original or a clean, complete colour scan showing every stamp and seal.
  • The passport page for every person named, so spellings match your other filings.
  • The instruction or checklist from the body that will receive the translation.
  • Any earlier translation of the same document, so we can keep names consistent.
  • For company files, the certified corporate documents and the signatory's authority.

Where things usually go wrong

Name spelled differently across documents

Thai to Roman transliteration has no single standard, so the same person can appear three ways. We fix every translation to the passport spelling and note the variants.

Translating before checking what the recipient wants

Certified translation and document legalisation solve different problems. Confirm the requirement in writing first; the two are ordered in a specific sequence.

Submitting a partial document

A scan that omits the reverse side, a seal or an endorsement is treated as an incomplete record, and the translation inherits the gap.

Relying on a translation done years ago

Civil records change: a marriage is registered, a name is altered, an address is updated. Assessors compare dates, so refresh the translation when the underlying record has moved.

Government fees and professional fees, separated

The ranges below reflect what our own files cost so you can budget before committing. An itemised quote is issued before work begins.

ItemOfficial feeOur feeNote
Certified translationNo government chargeQuoted per document setPriced on the document, not on speed; a family file is quoted as one set.
Notarial certificationNo government chargeQuoted per signature or copyOnly needed where the recipient asks for the signature or copy to be certified.
Department of Consular Affairs legalisationOfficial legalisation fee per document, set by the departmentQuoted for handlingRegular and express counters exist; the express counter is a same-day service.
Embassy legalisationFee set by the destination embassyQuoted for handlingNot every country requires it; we check before charging you for it.

Questions foreign clients actually ask us

Is a NAATI certified translation accepted outside Australia?
Many authorities in other countries accept it because it identifies an accredited practitioner, but the requirement varies. For non-Australian recipients we ask what their rule is; some want a translation certified by a Thai notarial services attorney or legalised by the Department of Consular Affairs instead, and we can produce that route just as easily.
How long does a certified translation take?
Standard Thai civil documents such as birth, marriage and household records are usually ready in two to four working days. Transcripts, judgments and contracts take longer because they are reviewed twice, and a large family or corporate file is scheduled as a set so that names stay consistent across every page.
Do you need my original documents?
For most translation work a complete colour scan is enough. Originals are needed only where notarial certification of a true copy or consular legalisation forms part of the same instruction, and in that case we tell you exactly which originals to bring or courier.
Can you correct a mistake in the Thai document itself?
The translation must follow the source, so an error is corrected at the issuing office rather than in the English. Our legal desk handles district office and civil registration corrections, and where the change is straightforward it is faster to fix the Thai record than to explain the discrepancy to an overseas assessor later.

Send scans of the Thai documents and the checklist you were given, and we will tell you which items genuinely need certified translation, which need legalisation instead, and what the whole set will take.

Contact our office
contact@tla.co.thจ.–ส. 9–18น.15 นาที