Australian citizen parent at birth
The primary requirement. Your parent must have been an Australian citizen (by birth, descent, or conferral) when you were born.
Born Overseas to an Australian Parent
You were born outside Australia but one of your parents was Australian at the time.
You have lived overseas your whole life, or spent some time in Australia on a visitor visa. You are not sure if you are already Australian or whether you need to apply. This page clarifies descent citizenship and the specific rules that apply to different generations. For help with descent applications, book with our Principal Consultant.
Who is eligible
One simple test. Several historical layers.
The key requirement is having a parent who was an Australian citizen at the time of your birth. Different historical rules apply depending on the year of birth.
Born before 1949
Before Australian citizenship legally came into existence. Special transitional rules apply. Specialist review needed.
Born 1949-1986
Historical rules govern. The Australian Citizenship Act has been amended multiple times. Careful review of the rules in force at your birth.
Born on or after 4 April 2002
Stricter rules. At least one parent must have been an Australian citizen at the time of birth, and the parent must have lived in Australia at some point.
What you need
Three evidence categories.
Descent applications are not about residence or a test. They are about evidence.
Parent's citizenship evidenceParent's Australian birth certificate. Parent's citizenship certificate if naturalised. Parent's Australian passport showing citizenship at the applicable time.
Your birth evidenceYour full birth certificate showing parents' names. Translation if not in English. Apostille or authentication depending on country of birth.
Character (for applicants over 18)Police checks from countries of residence over the past 10 years. Any convictions must be disclosed.
Registration is active, not automaticDescent citizenship is not automatic. It must be applied for and registered. Many adults born abroad to Australian parents have never registered.
Timeline and process
Not a fast application. Straightforward when prepared.
Registration can happen at any age, though adult applications take longer due to character checks.
Processing
6 to 12 months typically. Adult applicants with complex residence histories take longer than child applications from residents of Hague countries.
Lodgement
Applications are lodged online via ImmiAccount or through an Australian embassy or consulate if applicable. Fees apply and change periodically.
Next steps after grant
Citizenship certificate issued. Passport is a separate application. Children's eligibility passes one generation if you lived in Australia for 2+ years.
Children adopted by Australian citizens born overseas can sometimes register under descent pathways.
This is true even where the biological parents are not Australian. Specialised advice is essential for adoption-based cases as the rules intersect citizenship law, family law, and the Hague Convention framework.
Common questions
The questions we hear most.
For descent applications, book with Sourabh Aggarwal.
Can my grandparent's Australian citizenship give me descent citizenship?
Generally no, the requirement is a parent, not grandparent. Some historical exceptions exist.
Does descent citizenship give me a passport automatically?
Registration is the first step. A passport is a separate application to the Australian Passport Office.
What if my Australian parent was a dual citizen?
Dual citizenship of the parent is fine, they still count as an Australian citizen for descent purposes.
Can I pass descent citizenship to my children?
Descent passes one generation. If you gained citizenship by descent and your children are born overseas, their eligibility depends on whether you lived in Australia for at least 2 years before they were born.
Some information on this page has been sourced from the Department of Home Affairs and has been interpreted and approved by Principal Migration Agent Sourabh Aggarwal (MARN 1462159). Last reviewed: May 2026.