How to Apply for a Certificate of No Impediment in Australia
Daniel Osiomwanuri
This post is also available in:English /
Published:
Oct 1, 2025
If you are marrying overseas as an Australian citizen, you will have to provide a Certificate of No Impediment (CNI). This document is proof that you aren't legally married in Australia. It’s also a requirement to apply for a marriage licence to get married legally in most countries.
To apply, you must be an Australian citizen, obtain the application form, and submit supporting documents. You can apply for the CNI in Australia or at the Australian Embassy, depending on the receiving country's requirements.
In this article, you will learn about the Australian CNI, when it's needed, where and how to apply. You will also learn about the fees, processing time and when you need certified translation services.
Table of Contents
Why do you need a Certificate of No Impediment in Australia
You need an Australian Certificate of No Impediment if you plan to marry abroad. This document helps you:
Prove that you aren't legally married in Australia
To register your intent to marry abroad
Ensure your marriage abroad is legally recognised by the country
Provide legal assurance to a foreign government that your marriage will not be bigamous
To fulfil the legal requirements to marry in that country
Some countries known to request a CNI from Australian citizens frequently include:
Poland
The Czech Republic
Netherlands
Austria
French territories such as New Caledonia
Thailand
Vietnam
The Philippines
Singapore
Malaysia
China
Where to apply for an Australian CNI
You can apply for a CNI in Australia at:
The Australian Department of Foreign Affairs and Trade (DFAT) office
The Australian embassy or consulate in the country where you will marry.
Note: The country where you intend to marry will determine the option you use. In most cases, you will have to apply at the embassy or Consulate. For example, authorities in Poland and the Czech Republic will not accept a CNI issued in Australia.
What are the eligibility requirements for obtaining a Certificate of No Impediment (CNI)?
To be eligible for an Australian Certificate of No Impediment (CNI), you must meet the following requirements.
You are an Australian citizen or permanent resident
You are 18 years or above
You are marrying overseas, and the destination country requires you to confirm that you are legally able to marry.
You can provide supporting documents.
Note: If your partner isn't an Australian citizen, they must apply for a CNI from their country of citizenship. For example, if you are getting married to a UK citizen in Singapore, your partner must apply for a UK Certificate of No Impediment to Marriage.
Documents required to apply for a Certificate of No Impediment (CNI)
A copy of the judicial authorisation to marry (If you are under 18 years)
Note: If any document isn't in English, it must be accompanied by a certified English translation that's performed by a professional NAATI translator.
How can you apply for a Letter of No Impediment in Australia?
To apply for CNI in Australia, at least one person in the marrying couple must be an Australian citizen or permanent resident. The process generally involves the following steps:
Gather supporting documents
You will typically need to provide proof of identity, your partner's identification, evidence of previous marriage termination, and any other required documents.
Complete the application form
Download and fill out the "Application for a Certificate of No Impediment to Marriage" from the Smartraveller website or an Australian embassy or consulate.
Sign in the Presence of an Authorised Witness
Print out the form and fill in all the information. However, do not sign the application form beforehand. You must sign it in the presence of an authorised witness in Australia or at the embassy.
Submit and pay the fee
The application can be submitted in person, by mail, at the DFAT, Australian Embassy, or through the website, depending on your location. You must pay the CNI application fee of A$177 to complete the process.
Receive CNI
Once you have paid the application fees, your CNI will be processed, and you will be informed when it's ready. You can pick it up in person or receive it via post.
The role of NAATI translations in obtaining a CNI
To obtain an Australian CNI, or to present supporting documents to a foreign authority (like an embassy or local register office) that issues the CNI, you may need to submit official documents such as:
Birth Certificates
Divorce Certificates (if previously married)
Death Certificates (if widowed)
Passports
If any of the required supporting documents are not in English, they must be translated into English. In Australia, you will need a translation done by a NAATI translator to be officially accepted.
Using a translator recognised by NAATI provides a guarantee of accuracy, professionalism, and legal recognition for the translated document. You request a free quote to get translation rates for your documents from Transayte.
When CNI is not a requirement under Australian law
A Certificate of No Impediment to Marriage (CNI) is not a requirement under Australian domestic law for a marriage solemnised (performed) in Australia.
The primary reason CNIs are issued is for Australian citizens or permanent residents to get married overseas. This is because many foreign countries require the CNI as proof that the individual is legally free to marry.
In Australia, couples only need the Notice of Intended Marriage (NOIM) form to confirm that there are no legal impediments to their marriage. The NOIM must be lodged with an authorised marriage officiant at least one month before the wedding.
Certificate of No Impediment (CNI) fees & processing time in Australia
Processing time for a CNI in Australia varies depending on the location. Here's a list of processing times for some countries' embassies or consulates:
Netherlands: 5 business days
Singapore: 2 business days
Vietnam: 1 business day
If you are applying at DFAT in Australia, the timeline typically ranges from 2 business days to 4 weeks. You can request an estimated time when submitting your application.
Legalisation and Apostille of a Certificate of No Impediment in Australia
The requirement to have your Certificate of No Impediment to Marriage (CNI) legalised depends on the country where you plan to marry.
The Australian Government, through the Department of Foreign Affairs and Trade (DFAT), provides two forms of legalisation: Apostille and Consular legalisation.
You need an apostille stampif the requesting country is a signatory to the Hague Apostille Convention.
You will need consular legalisation if the country where you are getting married isn't a signatory to the Hague Apostille Convention.
Note: If the foreign authority requires an apostille or consular legalisation, it will be issued directly on the original CNI document by DFAT for an additional fee.
How can Translayte help you?
Translayte provides certified translations that are accepted by the Australian DFAT, courts, and other authorities. Whether you need certified translations for your Australian CNI application, marriage overseas, legalisation, or apostille services, we can help. Here is what we offer:
Certified translation by NAATI approved translatorswith experience translating personal and civil documents for CNI and marriages abroad.
Apostille services to ensure you can submit your application on time
24/7 multilingual customer support services
Transparent translation rates starting at $31.75 per page
Expedited translation options with a 12 - 24-hour timeline
Don’t allow poorly translated documents to delay your CNI application or marriage overseas. Request a free quote to get certified translation from approved NAATI translators.
You can apply online through the Australian Department of Foreign Affairs and Trade (DFAT) website or submit your application in person at an Australian passport office or diplomatic mission.
The application fee is typically around AUD $177, but payment amounts may change; please check the latest rates on the official DFAT website for the most up-to-date information.