Northern Territory Office

Notarial services

Please ensure that documents relating to notarial services you require from the Department of Foreign Affairs Northern Territory Office are presented in the correct form and that you provide the correct instructions for witnessing any signatures on the documents. If you are unsure of the legislative requirements relating to witnessing signatures on a particular document, you should seek independent legal advice. Please note, by witnessing a signature on a document neither the Australian Government nor the Northern Territory Office guarantees the legal effectiveness of the document or the accuracy of its contents.


Overseas governments sometimes need proof that Australian documents are genuine before they will accept them. Please confirm requirements with the Embassy or Consulate of the country you are submitting the documents to. The Department of Foreign Affairs and Trade will certify that official signatures, stamps or seals on a document are genuine by checking them against a specimen held on file, and stamping the document with an Authentication or Apostille.


In most cases, documents can be processed in three business days. There may be a delay if we do not have a specimen signature on file of the person who has signed your document (this means we will need to verify their signature), or at peak times (such as during university graduation periods).

Documents requiring an Authentication or an Apostille can be lodged between 8.30am and 12.00pm Monday to Friday. Alternatively, documents can be submitted by post.

Certificates of No Impediment

The Department of Foreign Affairs and Trade cannot advise on the specific requirements that may need to be met in order for a marriage to be legal in a particular country. For exact details of what requirements will need to be met, persons wishing to marry overseas should contact the Embassy, High Commission or Consulate of the country in which they would like to marry and also refer to the website of the Australian Embassy, High Commission or Consulate in that country.

Marriage overseas - general requirements

If accepted by the foreign authorities, Certificates of No Impediment for marriage overseas (CNIs) can be issued by our office in person for citizens and permanent residents of Australia.

Document lodgement

Documents can be lodged in person or sent via post.

Our counter hours are 8:30am–12:00pm Monday to Friday. No appointment is required. In most cases, documents can be processed in three business days. Payment can be made by cash, EFTPOS, Visa, Mastercard and bank cheque or money order made payable to the "Department of Foreign Affairs and Trade".

If posting your documents, payment can be made via the below methods:

Notarial request and payment form [PDF 25 KB]
Notarial request and payment form [Word 352 KB]

If mailing your document please post it, together with the above form and payment to:

Consular Section
Northern Territory Office
Department of Foreign Affairs and Trade
GPO Box 1910
Darwin NT 0801

The cost of returning your document by ordinary post is included in the fee. Please indicate how you would like your document/s returned on the above form. If you would like your document returned via registered mail, please include a stamped, self-addressed registered envelope.

Overseas postage

If you are overseas and wish your document to be returned by Express Courier International Service (Australia Post) please include extra payment according to Australia Post’s international delivery service charge.

We can also post documents via regular unregistered Airmail at no extra cost. We do not take any responsibility for documents once they have been posted.

All payment must be in Australian dollars.