Canadian Citizenship by Descent: Eligibility, Proof, and Appeals

If one of your parents was a Canadian citizen when you were born, you are very likely a Canadian citizen by descent, even if you were born abroad and have never set foot in Canada. A December 15, 2025 law change (Bill C-3) removed the strict one-generation cap that had blocked many families since 2009, and it did so retroactively for people born before that date. To use your citizenship, though, you still have to prove it by applying to Immigration, Refugees and Citizenship Canada (IRCC) for a citizenship certificate.

Who Qualifies

The basic rule has held since the current Citizenship Act took effect in 1977: a child born outside Canada to a parent who was either born in Canada or naturalized as Canadian is automatically a citizen. That first-generation-abroad situation has never been in doubt.

The harder question has always been the second generation and beyond: what if your Canadian parent was also born abroad and holds citizenship only by descent? From April 2009 until December 2025, the answer was no, citizenship stopped there.¹ Bill C-3 changed that, and the details depend on when you were born.

Born Before December 15, 2025

If you were born outside Canada before December 15, 2025 to a Canadian parent who was also born outside Canada, you are now recognized as a Canadian citizen in most cases. The change is retroactive: your citizenship is treated as having existed from birth, not from the date the law came into force. There is no residency test to satisfy and no need to prove your parent spent any particular amount of time in Canada.²

What you still need is documentary proof. Without a citizenship certificate, you cannot get a Canadian passport or access services that require proof of status.

Born On or After December 15, 2025

For children born abroad on or after December 15, 2025, the second-generation rule has a condition attached. If your Canadian parent was also born outside Canada, that parent must have spent at least 1,095 cumulative days physically present in Canada before your birth for citizenship to pass to you.³ That is roughly three years of time in Canada, and it does not have to be consecutive.

This is often called the substantial connection test. If neither parent meets the 1,095-day threshold, a child born abroad in the second generation or later does not acquire citizenship by descent.

The Crown Servant Exception

The generation limit does not apply to children of Canadians who were working abroad for the Canadian Armed Forces, the federal public administration, or a provincial or territorial public service at the time of the child’s birth. The same carve-out extends one level up: if your grandparent held such a post when your parent was born or adopted abroad, the limit does not block your claim either. Locally hired staff do not count; the parent or grandparent must have been posted abroad by the Canadian government.¹

Adopted Children

Bill C-3 opened a parallel path for children adopted abroad by Canadian parents. For adoptions completed before December 15, 2025, citizenship can now be granted under section 5.1 of the Citizenship Act regardless of the adoptive parent’s generation, with no residency requirement on the parent. For adoptions on or after that date, the same 1,095-day physical presence test applies to an adoptive parent who was born abroad and holds citizenship by descent.⁴

Adopted children apply through the citizenship grant process rather than the proof-of-citizenship process. The forms and fees are different, so confirm the right package on the IRCC website before you file.

How to Apply for Proof of Citizenship

You claim your citizenship by applying for a citizenship certificate using Form CIT 0001.⁵ The fee is $75 CAD and is non-refundable.⁶

Online or Paper

You can apply online if you were born outside Canada and your Canadian parent was either born in Canada on or after February 15, 1977, or naturalized on or after April 17, 2009. Otherwise you file on paper.⁷ Online applicants scan and upload documents through an IRCC account. Paper packages go to the Case Processing Centre in Sydney, Nova Scotia, at Box 10000, Sydney, NS, B1P 7C1; the P.O. box varies by application type, so check you have the right one.⁸

Documents to Include

You need two pieces of valid identification, both showing your name and date of birth, at least one with a photo. A driver’s license, passport, or provincial health card works. Birth certificates, SIN cards, bank cards, and previous citizenship certificates are not accepted as ID for this application.⁹

You also need your own long-form birth certificate showing both parents’ names, and proof of your Canadian parent’s citizenship: a Canadian birth certificate, a naturalization certificate, or their own citizenship certificate. Two identical printed citizenship photos meeting IRCC specifications must be included, unstapled and unglued. Any document not in English or French must come with a certified translation and a translator’s affidavit sworn before a commissioner of oaths, notary public, or lawyer.¹⁰

If you were born on or after December 15, 2025 and your Canadian parent holds citizenship by descent, you also file Form CIT 0555 to calculate physical presence, together with evidence of your parent’s time in Canada. Useful records include employment documents, school transcripts, tax slips, rental agreements, mortgage records, and passport stamps showing entry and exit dates.⁹

If the Crown servant exception is your basis for qualifying, add an employment document from the responsible authority confirming the position, transfer date, and duration of the posting.⁹

Processing Time and Urgent Requests

After IRCC opens your file, you receive an acknowledgment of receipt (AOR) with your unique client identifier (UCI). Online applicants see it in their IRCC account; paper applicants get it by email or mail. There is often a gap between IRCC receiving the package and formally opening it, so silence for a few weeks is normal.¹¹

Processing times have grown. Mid-2024 saw certificates issued in roughly three months. By early 2026 the wait had reached about ten months, driven by the volume of applications from people newly eligible under Bill C-3. If you need the document for travel or employment, plan on that longer window.

Urgent processing is available in limited circumstances: needing the certificate to take or keep a job, accessing benefits like a pension or social insurance number, urgent travel for a death or serious illness in the family when no other passport is available, addressing statelessness, or relocating a minor child born abroad to Canada.¹² You submit an explanation letter with supporting evidence such as a job offer, doctor’s note, school enrollment letter, plane ticket with proof of payment, or death certificate. If your application is already in progress and something changes, request urgent processing through the IRCC web form using your UCI or application number.

If Your Application Is Refused

If IRCC refuses your application, you have 30 days from the date on the refusal letter to file an application for leave and judicial review at the Federal Court of Canada using Form IR-1.¹³ Judicial review is not a fresh look at the evidence; the court decides whether IRCC made a legal error. If leave is granted, the court sets a hearing date. If leave is refused, there is no further appeal.

The 30-day deadline is strict, and missing it closes the door to the court. If you receive a refusal you think is wrong, speak with an immigration lawyer quickly.

1
Immigration, Refugees and Citizenship Canada. Changes to Citizenship Rules 2009 to 2015
2
Immigration, Refugees and Citizenship Canada. Change to Citizenship Rules
3
Justice Laws Website. Citizenship Act RSC 1985 c C-29 – Section 3
4
Parliament of Canada. Bill C-3 An Act to Amend the Citizenship Act (2025)
5
Immigration, Refugees and Citizenship Canada. Application for a Citizenship Certificate (CIT 0001)
6
Immigration, Refugees and Citizenship Canada. Apply for a Canadian Citizenship Certificate: About the Process
7
Government of Canada. Apply for a Canadian Citizenship Certificate: How to Apply
8
Immigration, Refugees and Citizenship Canada. Case Processing Centre: Sydney, Nova Scotia
9
Immigration, Refugees and Citizenship Canada. Guide for Paper Applications for a Citizenship Certificate for Adults and Minors (Proof of Citizenship) Under Section 3
10
Immigration, Refugees and Citizenship Canada. What Language Should My Supporting Documents Be In?
11
Immigration, Refugees and Citizenship Canada. Apply for a Canadian Citizenship Certificate: After You Apply
12
Immigration, Refugees and Citizenship Canada. When and How Do I Apply Urgently for a Citizenship Certificate?
13
Federal Court of Canada. Application for Leave and for Judicial Review (Citizenship)