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What’s the difference between a notary public and a commissioner of oaths?

What’s the difference between a notary public and a commissioner of oaths?

A commissioner of oaths (or a commissioner for oaths) is someone authorised by law to take oaths, affirmations, and declarations from people swearing to the truth of certain documents or for certifying true copies of documents for legal purposes. In New South Wales, this role is usually performed by a justice of the peace.

If you must sign a document that requires a ‘prescribed witness’ or you must certify a copy of your original document, then you can usually use a justice of the peace, a lawyer, or a notary public. However, if you have been told that your document must be signed in front of a commissioner of oaths, it is probably because your document will be used in another country (or in another state other than New South Wales) where they have commissioners of oaths. If your document is going to be used in another country, then your document will likely need to be notarised by a notary public instead of being attested by a commissioner of oaths, justice of the peace, or a lawyer (who is not a notary public).

In Australia, a notary public is a senior lawyer who has completed further qualifications to be appointed as a notary public. A notary public, like a commissioner of oaths, is authorised by law to take oaths, affirmations, and declarations from people swearing to the truth of certain documents or for certifying true copies of documents for legal purposes.

The important difference between a notary public from a justice of the peace, a commissioner of oaths, or any other prescribed witness is that if a document is intended to be used in another country then it should be notarised which can only be done by a notary public. On the other hand, if you are using your document in Australia, then you can use a justice of the peace.

If your document must also be stamped with an apostille or authenticated by the Department of Foreign Affairs and Trade (DFAT), then your document must be notarised by a notary public. DFAT will not recognise documents attested by a commissioner of oaths, justice of the peace, or a lawyer (who is not a notary public).

The fact that you are asking this question or searching for answers and you are now reading this page suggests that someone has asked you to use a commissioner of oaths or you are sending your documents overseas which means you will need to use a notary public to notarise your documents.

Who can witness my signature or certify my documents?

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Do you have any questions?

Sending documents from Australia to other countries can be complicated. We make it simple.

If your documents must be stamped with an apostille or authenticated and then legalised, we can help with that too. We’ve also created a flowchart to explain the process.

Not sure what you need? Contact us or visit our Frequently Asked Questions for more information.

So, what’s next?

Visit our Notary Fees page for a free quote for our notary public services. Otherwise, call us on +61 2 9687 8885 to speak with our friendly team about your requirements.

Why choose Phang Legal for your notary public services?

We’re a leading provider of notary public services in Sydney. We’re known for:

  • Our experience and expertise in notarising documents for other countries;
  • Our low-cost fixed fees and service offerings; and
  • Our availability to help on short notice.

Our office is conveniently located in Parramatta, the geographic centre of the Sydney metropolitan area. We help clients from across Sydney and beyond with personal, professional and timely notary public services.

Ern Phang
Ern Phang
Notary Public

This website is maintained by Phang Legal, a boutique law firm in Parramatta and a leading provider of quality notary public services to satisfied clients across Sydney and beyond.

Ern Phang is a director of Phang Legal and a notary public (since 2005). Ern regularly writes about his experiences as a notary public and the issues faced by his clients in sending documents to countries all over the world.

All information on this website is for general purposes only and correct at the time of publication. Only rely on information and advice that is specific to your situation and current at the time you wish to rely on it.
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