The short answer
For Australian visa applications, a NAATI-certified translation is required. A notarised translation is not the same thing and is generally not accepted by the Department of Home Affairs as a substitute. Understanding the difference before you order a translation can save time and money.
What is a NAATI-certified translation?
A NAATI-certified translation is a translation completed by a translator who holds accreditation from the National Accreditation Authority for Translators and Interpreters (NAATI). NAATI is the recognised national standard for translators and interpreters in Australia. A NAATI-certified translation includes the translator's full name, NAATI credential number, signature, and a certification statement confirming the translation is accurate and complete. This document is the standard accepted by the Department of Home Affairs, state and territory governments, Australian universities, and all other official Australian bodies. Common documents requiring NAATI-certified translation include birth certificates, marriage certificates, and police clearance certificates. You can learn more about working with a NAATI-certified translator for Spanish-language documents.
What is a notarised translation?
A notarised translation is a translation that has been signed by a notary public. A notary public is a legally appointed official who can witness signatures and verify the identity of a signatory — but a notary does not assess the quality, accuracy, or completeness of a translation. Notarisation simply confirms that the translator signed the document in front of the notary. It says nothing about whether the translation is correct or whether the translator is qualified.
Why notarised translations are not accepted for Australian visas
The Department of Home Affairs requires NAATI certification specifically because it provides a verified standard of quality and accountability. A NAATI credential number can be checked against the NAATI register, confirming the translator is genuinely accredited. A notarised translation provides no such verification — anyone could produce a translation, sign it before a notary, and have it notarised regardless of their language ability or qualifications. This applies to all visa types including the partner visa, skilled visa, and student visa.
When might a notarised translation be used?
Notarised translations are used in some countries and for some purposes outside of Australian visa applications — for example, in some European jurisdictions or for certain private legal matters. If you are dealing with an Australian institution, always confirm the specific requirement before ordering. For the Department of Home Affairs and for Australian visa applications, NAATI certification is the required standard.
Can a translation be both NAATI-certified and notarised?
Yes, but for Australian visa purposes, NAATI certification alone is sufficient. Adding notarisation is unnecessary for Department of Home Affairs submissions and adds cost without adding value for immigration purposes.
What about sworn translations?
A sworn translation is a translation that carries legal force in certain countries — typically where the translator has taken an oath before a court. Australia does not use a sworn translation system. The equivalent in Australia is NAATI certification. If a foreign institution asks for a sworn translation of an Australian document, they may accept a NAATI-certified translation — confirm with the requesting institution.