Quick answer: apostille or authentication?
The destination country is the starting point. New Zealand Government guidance places countries into Apostille, Category A authentication or Category B authentication pathways.
An apostille is used for countries covered by the 1961 Hague Apostille Convention. Other destinations may require authentication, which is sometimes called legalisation.
Do not choose the process simply because one sounds more official than the other. The correct certificate depends on where the document is going and what the overseas organisation requires.
Source checked: New Zealand Government guidance for using New Zealand documents overseas, last updated September 2026.
What is an apostille?
An apostille is an official government certificate that verifies the signature, stamp or seal on a document for use in countries covered by the 1961 Hague Apostille Convention.
In New Zealand, apostilles are handled through the Department of Internal Affairs Authentication Unit. A paper apostille or electronic apostille (e-apostille) may be available, but the overseas organisation should confirm which format it will accept. See Paper vs E-Apostille NZ for a practical comparison.
Apostille pathway
Typical route: prepare the eligible New Zealand document → obtain any required notarisation → submit for apostille → receive the apostilled document for overseas use.
What is authentication?
Authentication is also an official process that verifies the signature, stamp or seal on a New Zealand document. It is used for destinations that follow an authentication pathway rather than the apostille pathway. You may also hear this process described as legalisation.
New Zealand Government guidance separates authentication destinations into Category A and Category B.
Category A vs Category B authentication
Category A
The document is authenticated by the Department of Internal Affairs Authentication Unit and then sent to the Ministry of Foreign Affairs and Trade (MFAT) for verification.
Category B
The process can involve MFAT and an overseas embassy. Requirements vary by destination, and there is no standard overall timeframe for the embassy stages.
See our Document Authentication assistance
Apostille vs authentication: the main differences
| Point | Apostille | Authentication |
|---|---|---|
| Where it is used | Destinations in the apostille pathway under the Hague Apostille Convention. | Destinations requiring Category A or Category B authentication. |
| NZ government handling | DIA Authentication Unit issues the apostille. | DIA handles authentication; Category A also goes to MFAT, while Category B can involve embassy steps. |
| Paper / electronic | Paper apostille or e-apostille can be requested. | The process depends on the authentication category and destination requirements. |
| Standard NZ processing | Current DIA guidance states processing within 15 working days for standard applications. | Category A is stated as within 15 working days; Category B has no set overall timeframe because additional international steps are involved. |
How do I know which country category applies?
The New Zealand Government maintains the current country classification used for apostille and authentication applications. Because the applicable pathway depends on the destination, check the New Zealand Government's current country classification when you prepare the application.
For example, current September 2026 guidance lists countries such as Australia, Canada, China, India, the United Kingdom and the United States in the apostille pathway, while other countries are listed under Category A or Category B authentication.
NZ Document Assist can check the current administrative pathway as part of preparing your document-handling case. For preparation requirements such as originals, notarisation and document format, see NZ Apostille Requirements.
Do I need a Notary Public first?
Sometimes. It depends on the document type and the Authentication Unit's requirements.
Where a document must be notarised for a New Zealand apostille or authentication application, current DIA guidance requires an NZ Notary Public. A Justice of the Peace or ordinary solicitor certification is not a substitute for that specific notarisation requirement.
Read JP vs Notary Public NZ or see our Notary Coordination service.
Do original documents or copies get apostilled or authenticated?
That depends on the document. Some New Zealand documents are submitted as originals, some government-issued documents may have specific certification options, and other documents may need a copy or original notarised by an NZ Notary Public.
This is why document preparation should be checked before paying for certification or sending originals away.
Who can certify documents in NZ? and Certified copy of a passport in NZ explain two common situations.
What about translations?
The receiving organisation may require a translation as well as an apostille or authentication. DIA can arrange translations as part of some applications, or a translation can be organised separately. Current DIA guidance states that independently organised translations submitted through this process need to be notarised by an NZ Notary Public.
How long does apostille or authentication take in New Zealand?
Current September 2026 government guidance states that standard apostille and Category A authentication applications are processed within 15 working days. Eligible urgent apostille, e-apostille and Category A applications can be processed within 5 working days when the urgent-service conditions are met.
Category B authentication is different because MFAT and overseas embassy steps may be involved. The Government does not provide a set overall timeframe for those additional stages.
Common mistakes when choosing apostille or authentication
- Applying for an apostille without checking the destination country.
- Assuming authentication and apostille are interchangeable.
- Using a JP when DIA requires an NZ Notary Public.
- Sending a copy when an original is required.
- Not checking whether the overseas organisation accepts an e-apostille.
- Leaving translation requirements until after the document has been processed.
- Underestimating Category B embassy processing time.
What should you check before starting?
If you want the broader picture before choosing a pathway, read Documents for Overseas Use.
1. Destination country
Confirm where the New Zealand document will actually be used.
2. Receiving organisation
Ask exactly what certificate and document format it requires.
3. Document type
Check whether an original, certified copy or notarised document is required.
4. Extra steps
Check translation, notarisation, courier and deadline requirements before submission.
Independent Guidance, Without Guessing the Pathway
NZ Document Assist provides administrative document assistance and coordination. We help you organise the likely pathway from the destination country, document type and the instructions from the overseas receiving organisation.
Check Before You Pay
We help identify whether the current NZ pathway is apostille, Category A authentication or Category B authentication before you organise unnecessary steps.
Clear Scope
We are not a government agency, law firm, Notary Public or Justice of the Peace service, and we do not provide legal or immigration advice.
Third-Party Requirements
The overseas receiving organisation may set additional requirements, so its written instructions remain important.
One Point of Coordination
Where required, we can coordinate administrative steps involving documents, notary, translation, government processing and courier logistics. See How It Works for the full process.
Frequently asked questions
Is an apostille the same as authentication?
No. Both verify the authenticity of signatures, stamps or seals for overseas use, but they are different international pathways. The destination country determines which route applies.
Is authentication the same as legalisation?
The term legalisation is often used for authentication processes. The exact steps depend on the destination country.
Can I choose an apostille instead because it is simpler?
Not simply by preference. The certificate must match the destination and the receiving organisation's requirements.
Does an apostille prove that everything written in the document is true?
An apostille verifies the authenticity of the relevant signature, stamp or seal. It is not a general guarantee of every statement contained in the underlying document.
Do I need a Notary Public for every apostille?
No. Requirements depend on the document type. Some documents can be submitted in an accepted original form, while others require notarisation first.
Can a JP notarise a document for DIA apostille or authentication?
No where DIA specifically requires notarisation. Current DIA guidance says an NZ Notary Public must be used for that step.
Can I get an e-apostille?
New Zealand allows an electronic apostille to be requested. Check that the overseas receiving organisation will accept the electronic format before choosing it.
Which is faster: apostille or authentication?
Standard apostille and Category A authentication currently share the same stated DIA processing timeframe. Category B can take longer because overseas embassy steps may be required.
Sources checked: New Zealand Government guidance on using NZ documents overseas and Authentication Unit document requirements; Ministry of Foreign Affairs and Trade guidance on document authentication. No external visitor links are included on this page.