Australian Canadian Citizenship by Descent: Bill C-3 Guide

If you're an Australian resident with a Canadian parent or grandparent, you may already be a Canadian citizen without knowing it. Under Bill C-3, which came into force on December 15, 2025, the first-generation limit on citizenship by descent was eliminated, opening the door for thousands of Australians with Canadian ancestry to claim their citizenship.

Australia permits dual citizenship, so claiming your Canadian status won't affect your Australian citizenship or passport. The process is the same whether you're applying from Sydney, Melbourne, or anywhere else—you just need to know how to gather documents across two countries and mail your application properly.

Eligibility for Australians: Same Rules Apply Everywhere

Australian Canadian citizenship by descent follows the same eligibility rules as applications from any other country. Bill C-3 doesn't care where you currently live—it only cares about your family tree and when you were born.

You're eligible if:

• You were born outside Canada (including in Australia)
• At least one of your parents was a Canadian citizen when you were born
• Your parent was born outside Canada to a Canadian-citizen parent (your grandparent), making you part of the "lost Canadians" Bill C-3 was designed to restore

The most common pathway for Australians: your grandparent was born in Canada, your parent was born in Australia (or another country) but never applied for citizenship, and you were born in Australia. Under the old first-generation limit, you were excluded. Under Bill C-3, you're now a citizen retroactively to your birth.

For a detailed breakdown of eligibility, see our Bill C-3 explained guide and grandparent pathway guide.

The Substantial Connection Test (Births After December 15, 2025)

If you were born after December 15, 2025, your Canadian-citizen parent must meet the substantial connection test: 1,095 days of physical presence in Canada before your birth. This rule doesn't affect most Australians applying now, since you were likely born before the law changed. Learn more about the substantial connection test.

Dual Citizenship: Australia and Canada Both Allow It

Australia has permitted dual citizenship since 2002. Claiming Canadian citizenship will not jeopardise your Australian citizenship, passport, or any benefits tied to Australian residency.

Canada has allowed dual citizenship since 1977. You can hold both passports, travel on either, and live in either country without penalty.

No Australian Tax Consequences

Australia uses a residence-based tax system. You're taxed on worldwide income only if you're an Australian tax resident—determined by domicile, physical presence, and ties to Australia, not citizenship.

Claiming Canadian citizenship doesn't change your Australian tax residency. Canada also uses a residence-based tax system, so simply holding Canadian citizenship while living in Australia triggers no Canadian tax obligations.

This is very different from the United States, which taxes citizens regardless of residence. If you're also a US citizen or thinking about US-Canada dual citizenship, see our dual US-Canadian citizenship tax guide.

Gathering Documents When Your Ancestor Lived in Canada

The biggest challenge for Australians is obtaining Canadian vital records from thousands of kilometres away. You'll need:

• Your birth certificate (Australian or wherever you were born)
• Your parent's birth certificate (long-form, showing parents' names)
• Your grandparent's long-form Canadian birth certificate (issued by the province where they were born, showing their parents' names)

Ordering Canadian Birth Certificates from Australia

Each Canadian province manages its own vital statistics. If your grandparent was born in Ontario, you order from ServiceOntario. If they were born in British Columbia, you order from BC Vital Statistics. And so on.

Most provinces accept online or mail orders from overseas. Fees range from $45 to $75 CAD per certificate, plus international shipping.

Tips:

• Use a credit card that doesn't charge foreign transaction fees
• Allow 4 to 8 weeks for delivery to Australia
• Request the long-form certificate explicitly (some provinces call it a "large" or "full" certificate)
• If your grandparent was born in Quebec, you'll need a certified English translation if the certificate is in French—see our Quebec birth certificate guide

For detailed ordering instructions by province, see our long-form birth certificate guide.

What If You Can't Find Your Grandparent's Birth Record?

If your grandparent was born before provincial registration systems were fully established (roughly pre-1920 in some provinces), or if records were lost, you may need alternative evidence: baptismal records, immigration documents, naturalization certificates, or statutory declarations.

Contact a Regulated Canadian Immigration Consultant (RCIC) or Canadian immigration lawyer if you hit a roadblock. arryv is not a law firm and can't provide legal advice, but we can help you gather and organise standard documents.

Mailing Your CIT 0001 Application from Australia

Once you've gathered your documents and completed form CIT 0001, you'll mail everything to:

Case Processing Centre – Sydney
IRCC
P.O. Box 10000
Sydney, Nova Scotia
B1P 7C1
Canada

Yes, Sydney to Sydney—but Nova Scotia, not New South Wales.

Mailing Tips for Australian Applicants

• Use Australia Post International Post or a courier like DHL, FedEx, or UPS
• Choose a service with tracking (registered post or express)
• Budget $30 to $80 AUD depending on speed and courier
• Include all originals or certified copies as specified in the CIT 0001 instructions (original birth certificates are usually returned, but certified copies are safer for your peace of mind)
• Pay the $75 CAD application fee by bank draft, money order, or credit card authorization (see the IRCC website for current payment options)

Don't use regular airmail. You want tracking and proof of delivery.

Processing Time from Australia

Processing time is 9 to 12 months regardless of where you apply from. IRCC processes all citizenship certificate applications in Sydney, Nova Scotia, whether you're in Sydney, Australia, Los Angeles, or London.

For more detail, see our processing time guide.

What Happens After You're Approved

Once IRCC approves your application, you'll receive a Canadian citizenship certificate by mail in Australia. This is your official proof of citizenship.

You can then:

• Apply for a Canadian passport at the Canadian High Commission in Canberra or Consulate-General in Sydney
• Use your citizenship certificate to sponsor family members, work in Canada without a visa, or access other citizenship benefits

See our guide on what to do after receiving your citizenship certificate.

Common Pitfalls to Avoid

• Don't send short-form birth certificates. Many Australian birth certificates are fine, but Canadian provincial certificates must be long-form with parents' names.
• Don't skip certified translations if any document is in French or another language.
• Don't assume your parent is a citizen. If your parent never claimed citizenship, you'll need to establish their eligibility first (usually straightforward if your grandparent was Canadian-born).
• Double-check form completion. The most common CIT 0001 rejection reasons are incomplete signatures, missing documents, and payment errors.

Historical Context: Canadian Migration to Australia

Tens of thousands of Canadians migrated to Australia between the 1950s and 1990s, many under the White Australia policy era and later skilled migration programs. Many had children in Australia who were cut off from citizenship by the 2009 first-generation limit.

Bill C-3 corrects that. If you're one of those children—or grandchildren—you're likely eligible now.

For more on the "lost Canadians" backstory, see our lost Canadians and Bill C-3 guide.

Check Your Eligibility in Under 2 Minutes

Not sure if you qualify? Answer a few quick questions about your family tree and birth dates at arryv.ai/check. Our free eligibility quiz will tell you whether you're eligible under Bill C-3, what documents you'll need, and how arryv can help you prepare your application—whether you're in Melbourne, Perth, or anywhere else in Australia.