A Certificate of No Impediment to Marriage (CNI) is an official document issued by the Australian Government confirming that you are free to marry. Many overseas authorities require this certificate before allowing a foreign citizen to marry within their jurisdiction. If you are planning an international marriage, here’s what you need to know about obtaining a CNI in Australia.

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What is a Certificate of No Impediment to Marriage?

A CNI is a statement confirming that there are no legal barriers preventing you from marrying under Australian law. It is commonly required by foreign marriage authorities as part of their legal processes. It does not automatically mean that your overseas marriage will be recognised in Australia, as recognition also depends on the laws of the country where the marriage takes place.

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Where to Apply

CNIs are issued by the Australian Department of Foreign Affairs and Trade (DFAT). Applications can be made at:

• DFAT passport and consular offices in capital cities across Australia, or
• Australian embassies, high commissions, or consulates overseas if you are already abroad.

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Eligibility

To apply, you must:

• Be an Australian citizen or permanent resident.
• Be at least 18 years old (or hold a court order permitting marriage under 18).
• Provide evidence that you are not already married.

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Documents Required

You will generally need to provide:

1. Completed CNI application form (available from DFAT or embassy websites).
2. Current Australian passport (or citizenship/permanent residency evidence).
3. Full birth certificate.
4. Proof of divorce or death certificate (if previously married).
5. Statutory declaration (in some cases).
6. Marriage details (name of fiancé/fiancée and place of intended marriage).

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Application Process

1. Prepare your documents – ensure originals (and certified copies if required).
2. Make an appointment – most DFAT offices and overseas posts require a booking.
3. Submit your application – in person, with payment of the fee.
4. Processing time – usually issued within a few working days, but timeframes vary by office and location.
5. Apostille/Legalisation – many countries require the CNI to be apostilled or legalised to be valid. DFAT can provide an apostille if needed.

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Fees

The fee for a CNI is around AUD $177 (as of 2025), plus additional fees if an apostille or legalisation is required. Check DFAT’s official website for up-to-date pricing.

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Recognition Overseas

While a CNI confirms your freedom to marry, each country has its own requirements. Some nations may also request:

• Translations into their official language.
• Additional notarisation or embassy authentication.
• Extra documents such as medical certificates or police clearances.

It is strongly recommended to check with the foreign marriage authority or local embassy/consulate of the country where you intend to marry before applying.

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Final Notes

• A CNI is valid for 12 months from the date of issue.
• If you do not marry within that time, a new certificate must be obtained.
• You should also confirm whether your overseas marriage will be automatically recognised in Australia. Most marriages conducted abroad are recognised, provided they are valid under local law and comply with Australian law.