A certificate of origin states where goods were made. It is issued by someone other than you — usually a chamber of commerce or another authorised body — and it does its main job at the border, where customs uses it to decide which duty applies and whether a trade agreement preference can be claimed.
That shapes everything about certified copies of it. For the document's primary purpose, a notarised copy is usually the wrong tool: customs and banks generally want the original, or a duplicate from the body that issued it. A notarised copy is for the secondary uses — and knowing which situation you are in saves an unnecessary appointment.
Non-preferential certificates state the country of origin for general purposes — import controls, statistics, a buyer's or bank's requirement. In Australia these are typically issued by chambers of commerce and similar bodies.
Preferential certificates or declarations support a claim to reduced duty under a free trade agreement. Depending on the agreement, they may be issued by an authorised body or completed by the exporter, producer or importer themselves.
Neither is issued by a notary, and a notary certifying a copy says nothing about whether the goods actually originate where the certificate says. Origin is a question for the issuing body, the exporter's records, and ultimately the importing country's customs.
In all three, go back to the issuer first.
There are real uses:
Many certificates of origin are now issued electronically, with a reference number or code that lets the recipient verify the certificate with the issuer online. For the recipient, that verification is stronger evidence than any certified copy.
For the notary, an electronic certificate raises the usual problem: there is no paper original. A notary can only certify a printout by stating exactly what was sighted — for example, the certificate as displayed on the issuer's verification page. Whether that is acceptable is the recipient's decision. Ask before booking.
For a paper certificate, the notary sights the original — with the issuer's stamp and signature — copies it, and certifies that the copy is true and complete. Include any continuation sheets and attached invoice references; a certificate that refers to an invoice number is often read with that invoice.
The notary is not confirming the origin of the goods, the accuracy of the description, the tariff classification, or that the issuing body was authorised to issue it.
Customs rejected my copy. Will notarising it help? Almost certainly not. Customs usually wants the original or an issuer-verified version. Contact the issuing body.
Can the notary certify the certificate of origin and the commercial invoice together? Yes, as separate certified copies at the same appointment. They are often required as a set.
The certificate was issued to my supplier, not me. Can I get it certified? A notary can certify a copy of an original you produce. Whether you should be presenting it, and whether the recipient accepts it from you, is a separate question.
Is a notarised certificate of origin the same as a legalised one? No. Notarisation certifies the copy; legalisation is the destination embassy's confirmation of the authentication chain.