Translator Affidavits in Australia

A translator affidavit is a sworn or affirmed statement in which a translator sets out their qualifications and confirms that an attached translation is a true and accurate translation of an attached original. Australian courts often want one for foreign-language evidence, and some overseas bodies want one before a notary, with an apostille.

Key takeaways

• A translator affidavit is sworn evidence from the translator, not just a certification stamp.
• It usually attaches the original and the translation as exhibits, and states the translator's qualifications.
• For an Australian court, it is sworn before an authorised affidavit taker and follows the court's rules on form.
• For overseas use, it is usually sworn before a notary, and DFAT can apostille the notary's signature.
• The translator must be independent, and usually NAATI-credentialled for work in Australia.

What is a translator affidavit?

An affidavit is a written statement of facts that the person making it swears or affirms is true, before an authorised witness. A translator affidavit applies that to a translation. The translator states who they are, what qualifications and credentials they hold in the languages concerned, that they have translated the attached document, and that the translation is true and accurate to the best of their knowledge and ability. The original and the translation are attached, usually as marked exhibits.

Because it is sworn, a false statement in an affidavit can have serious consequences for the translator, which is part of why courts and some foreign bodies give it weight. It turns the translator's professional certification into formal evidence. Our guide to the difference between an affidavit and a statutory declaration explains the two forms.

When is a translator affidavit needed?

The most common setting is court proceedings. When a party relies on a document in a foreign language, such as a contract, a foreign judgment, emails or a certificate, the court needs an English translation, and it usually wants evidence of its accuracy that the other side can test. A translator affidavit provides that. The translator may also be asked to give evidence in person if the translation is disputed.

Some overseas bodies also want translations made in Australia to be supported by a sworn statement from the translator, made before a notary, so that the translation can be apostilled and relied on abroad. And some Australian registries and tribunals ask for an affidavit or declaration from the translator in particular situations. The receiving body's instructions decide. Our guide to court documents covers related points.

How is it different from a NAATI certified translation?

A NAATI certified translation carries the translator's statement of accuracy, name, credential and often a NAATI stamp. That is enough for Home Affairs and many Australian bodies. A translator affidavit goes further: the statement is sworn or affirmed before an authorised witness, it sets out the translator's qualifications in detail, and it attaches the original and translation as formal exhibits.

So the affidavit is not a different translation, but a different way of vouching for it. The translation itself can be the same NAATI certified translation, exhibited to the affidavit. Use the affidavit where the receiving body asks for sworn evidence or where the translation may be challenged; otherwise, a certified translation is usually enough. Our guide to NAATI certified translations explains the certified version.

Feature	NAATI certified translation	Translator affidavit
Translator's statement of accuracy	Yes, signed	Yes, sworn or affirmed
Witnessed	No	Yes, by an authorised witness
Qualifications set out	Credential details	In more detail
Original and translation exhibited	Usually attached	Formally marked as exhibits
Typical use	Home Affairs, most Australian bodies	Courts, some overseas bodies
Can be apostilled	In some cases, per DFAT's list	Yes, if sworn before a notary

Who witnesses the affidavit?

It depends on where the affidavit will be used. For an Australian court or tribunal, the affidavit is sworn or affirmed before a person authorised to take affidavits in that jurisdiction, such as a Justice of the Peace, a lawyer or certain court officers, and must follow the court's rules on form, including how exhibits are marked. The court's own practice notes or registry can tell you what it expects.

For overseas use, the affidavit is usually sworn before an Australian notary, who administers the oath or affirmation, witnesses the translator's signature, and attaches a notarial certificate. DFAT can then apostille or authenticate the notary's signature. Check the destination's position on the HCCH status table, and see our guide to notarising an affidavit.

Who can be the translator?

The translator should be qualified in the language pair and independent of the matter. For use in Australia, that usually means a NAATI-credentialled translator in the right language direction. A party to the proceedings, a relative, or anyone with an interest in the outcome should not translate their own evidence, because the other side can challenge the translation's independence and the court may give it little weight.

For overseas use, the foreign body may have its own view about whose translation it accepts, for example preferring its own sworn translators. Ask before commissioning the affidavit, because a translator affidavit sworn in Australia will not help if the foreign body insists on a local sworn translation. Our guide to NAATI translations with a notary covers the overseas route.

What does the translator need to bring?

The translator attends the witness in person, with their photo identification, the original document or a copy of it, the translation, and the draft affidavit with the exhibits prepared. The witness administers the oath or affirmation, watches the translator sign, signs the affidavit and the exhibit notes, and completes their own details. For a court affidavit, the lawyer acting in the matter often prepares the affidavit and exhibits for the translator to swear, and checks that they meet the court's rules before the appointment.

What if the translation is challenged?

In court proceedings, the other side may dispute a translation, particularly where the meaning of a word or phrase matters to the case. The translator affidavit then becomes the starting point: the translator may be asked to explain choices, to consider alternative renderings, or to give evidence in person. The other side may commission its own translation, and the court decides which to prefer or how to read the document.

That is one reason to choose an experienced translator whose credentials are clear, and to have them note any genuinely ambiguous passages in the translation, rather than smoothing them over. A translation that flags uncertainty honestly is more credible than one that appears certain everywhere. Your lawyer can advise on how disputes about translations are usually handled in your court, and whether an expert report is also needed.

Can the affidavit cover several documents?

Yes. A single translator affidavit can exhibit several originals and their translations, provided each is clearly identified and marked. For large sets of documents, such as email chains or bundles of correspondence, the affidavit may exhibit them in groups. Follow the court's rules on exhibits, or the foreign body's instructions, because some want a separate affidavit for each document. Keeping the originals and translations in the same order, with matching exhibit marks, makes the bundle much easier for the reader to follow.

How do you arrange a translator affidavit?

1. Confirm the receiving body wants an affidavit, not just a certified translation, and in what form.
2. Engage an independent, qualified translator, usually NAATI-credentialled in the right direction.
3. Prepare the affidavit and exhibits: qualifications, statement of accuracy, original and translation.
4. Have the translator swear it before an authorised affidavit taker, or a notary for overseas use.
5. Arrange a DFAT apostille if the affidavit is going overseas and the foreign body asks.

What does this look like in practice?

Here is an illustration, not a real case. A Melbourne company is suing a supplier and relies on a contract written in Mandarin. Its lawyer needs the contract translated and the translation proved in court.

The lawyer engages an independent NAATI-certified Chinese translator, who translates the contract. The lawyer prepares a translator affidavit setting out the translator's credentials and attaching the contract and translation as exhibits. The translator swears it before a JP authorised to take affidavits, and it is filed with the court. When the supplier questions one clause, the translator is available to explain the translation.

In short

A translator affidavit is a sworn statement by a qualified, independent translator that an attached translation of an attached original is accurate, with their qualifications set out. Australian courts often want one for foreign-language evidence, sworn before an authorised affidavit taker in the court's form. For overseas use, it is usually sworn before a notary and apostilled by DFAT if asked. Check what the receiving body wants first.

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Need a translation proved by affidavit, in Australia or overseas? Send us the instructions you were given, and we will explain each step before you book. For translation with notarial certification, see our NAATI translation with notary certification service.