Australian Citizenship by Descent for a Child Born in Thailand

If your child was born in Thailand and a parent was an Australian citizen at the time of the birth, the child may qualify for Australian citizenship by descent.

Citizenship and a first Australian passport involve separate applications. Start by checking the child’s citizenship eligibility and preparing the evidence needed by the Department of Home Affairs.

Who can apply for Australian citizenship by descent?

The main requirements concern birth outside Australia and a parent who was an Australian citizen when the applicant was born. Applicants aged 18 or over must also satisfy the good character requirement.

If the Australian parent acquired citizenship by descent, an additional rule generally requires that parent to have spent at least two years lawfully in Australia before the child’s application. Exceptions can apply, so check the full eligibility rules if this affects your family.

A parent becoming Australian after the child’s birth does not, by itself, satisfy the citizenship-at-birth requirement for this route.

Check the official citizenship by descent guidance.

Is a child born in Thailand automatically Australian?

Do not assume that eligibility for citizenship by descent means the child already holds Australian citizenship. This route normally requires an application and approval.

A Thai birth certificate records the birth and helps establish the family relationship. It does not replace the Australian citizenship application or citizenship evidence.

Preparing documents for a child born in Thailand

Use the current Home Affairs document checklist to identify the evidence required for your application. As a practical starting point, organise the following records:

• The child’s Thai birth certificate.
• The child’s passport or other identity documents, where available.
• Evidence of the Australian parent’s citizenship and when it was acquired.
• Identity documents for the parents.
• Documents explaining any name changes.
• Evidence of parental responsibility where relevant.
• Translations and any identity declaration or photograph required by the application instructions.

This is a preparation list rather than a complete checklist. Additional evidence may be needed depending on the family’s circumstances.

Check names and dates carefully

Compare the child’s name, date of birth and parents’ details across the records before submitting. Where Thai names have different English spellings, explain the difference and provide supporting documents rather than leaving the decision-maker to guess.

Prepare translations correctly

Follow the Home Affairs translation instructions for documents that are not in English. Keep the original-language document together with its translation and check that names, dates, annotations and stamps have been addressed.

The later passport application has its own document requirements. Do not assume that an electronic copy accepted for one application will be sufficient for the next.

How to apply from Thailand

1. Check eligibility. Confirm the parent’s citizenship status at the child’s birth and any additional rules.
2. Review the official instructions. Use the current citizenship by descent page and its document checklist.
3. Prepare the evidence. Resolve missing documents and inconsistencies before submitting.
4. Apply through ImmiAccount. Complete the relevant application, attach the required documents and pay the current fee.
5. Monitor correspondence. Check the account and respond to requests within the stated deadlines.
6. Follow the approval instructions. Retain the citizenship evidence needed for the separate passport application.

Applications for children under 16 must be made by a responsible parent. Follow the current instructions for older applicants.

Access ImmiAccount.

Can you submit the application at the embassy?

The Australian Embassy in Thailand does not provide a visa and citizenship counter service. Follow the Home Affairs application instructions rather than the old advice about attending an immigration counter in Bangkok.

Passport services are handled separately. Check the embassy’s current passport guidance when you reach that stage.

Fees and processing times

Check the current fee and processing information on the official citizenship by descent page before applying. Reduced fees may apply to subsequent siblings applying together.

Build time into your plans for both citizenship and the passport application. A published processing estimate is not a guaranteed completion date, and missing evidence can delay progress.

Applying for the first Australian passport

Once the child has the required citizenship evidence, prepare a separate Australian passport application.

For a child born in Thailand, the embassy checklist includes the original foreign birth certificate, an English translation where required and the original Australian citizenship certificate. Dual-language Thai and English birth certificates are acceptable under the published checklist.

Follow the child passport instructions for photographs, parental consent, witnesses and attendance. First child passport applications require an appointment and in-person lodgement; arrangements differ according to the child’s age.

View the Australian Embassy passport checklists.

The embassy advises allowing at least six weeks from passport lodgement and payment. Applications without full parental consent can take longer, and priority passport processing is not available in Thailand.

Read the current passport guidance for Thailand.

Situations needing closer assessment

Seek case-specific advice where parentage or eligibility is uncertain, including adoption, surrogacy, disputed parental responsibility or a parent whose citizenship history is unclear.

Do not arrange private DNA testing simply because you think it may help. Home Affairs can request further evidence and may invite DNA testing under its own procedures.

Frequently asked questions

Does the child need to live in Australia first?

Residence in Australia by the child is not one of the main requirements listed for citizenship by descent. However, an Australian parent who obtained citizenship by descent may need to meet the additional time-in-Australia requirement.

Is citizenship approval the same as passport approval?

No. The passport application is separate and has its own identity, document and parental consent requirements.

Can we apply before obtaining a Thai birth certificate?

Prepare the birth evidence required by Home Affairs. If a document is unavailable, follow the official instructions for alternative evidence rather than assuming it can be omitted.

What if the parent became Australian after the birth?

The usual descent route requires an Australian citizen parent at the time of birth. Check other possible pathways with Home Affairs or an appropriately qualified adviser.

Related Australian visa guidance

If another family member needs an Australian visa, these guides may help:

• Australian Partner Visa for a Thai Wife or Partner
• Australian Visitor Visa for Thai Nationals