Canadian Citizenship by Descent: Bill C-3 and the End of the First-Generation Limit

For more than fifteen years, Canadian citizenship by descent stopped at one generation born outside Canada. If your parent was a Canadian citizen but had also been born abroad, you generally could not inherit citizenship — no matter how strong the family connection to Canada. That rule, known as the first-generation limit, was added to the Citizenship Act in 2009 and quickly drew criticism for splitting families and creating two tiers of Canadian citizens.

In December 2023, the Ontario Superior Court of Justice ruled the first-generation limit unconstitutional. Ottawa chose not to appeal. After several extensions and an earlier legislative attempt that died on the order paper, the government tabled Bill C-3 on June 5, 2025. It received Royal Assent on November 20, 2025, and came into force on December 15, 2025. The result is one of the most significant changes to Canadian citizenship law in a generation — and it has already produced a wave of newly-recognized Canadians, many of whom had no idea they had any claim at all.

What Bill C-3 Actually Does

Bill C-3 does two distinct things, and the distinction matters.

1. 1. It retroactively recognizes many people as Canadian citizens. Anyone born or adopted outside Canada before December 15, 2025 who would have been a Canadian citizen but for the first-generation limit (or certain other outdated provisions) is now considered a citizen by operation of law. This is automatic. There is no application to "become" Canadian; the law simply recognizes a citizenship that the prior framework had withheld. According to IRCC, this captures a large group of so-called "Lost Canadians" and their descendants. It may be automatic, but you do need to “prove it” to have proof of Canadian citizenship.
2. 2. It establishes a new "substantial connection" framework going forward. For children born or adopted abroad on or after December 15, 2025, citizenship can still be passed beyond the first generation — but the Canadian parent (if they too were born or adopted abroad) must demonstrate a real connection to Canada. Specifically, that parent must show at least 1,095 days (three years) of cumulative physical presence in Canada at any point before the child's birth or adoption. The threshold mirrors the residency rule for naturalization and is intended to anchor citizenship by descent in a meaningful tie to the country.

Who This Reaches

The reach of Bill C-3 is broader than most people realize. Several groups regularly turn up in the new framework:

The second-generation-and-beyond cohort — individuals born abroad to a Canadian parent who was also born abroad — are the most direct beneficiaries. Many in this group grew up assuming they had no claim to Canadian citizenship. Under the amended Act, they may already be Canadian citizens.

The descendants of historically excluded Canadians — particularly those whose lineage was disrupted by the gendered citizenship rules in force before 1977, when Canadian women could not pass citizenship to children born abroad on the same terms as Canadian men — now see those gaps closed by the same retroactive operation.

Americans with Canadian roots make up a particularly large share of new applicants. Many U.S. families with a parent, grandparent, or great-grandparent born in Canada — in New England, the Great Lakes states, the Pacific Northwest, or anywhere along the historical migration corridors — fell outside the chain of descent under the old first-generation limit. Bill C-3 reopens that chain, and IRCC and provincial archives have reported a sharp surge in record requests from the U.S. since the law took effect. We have also seen this trend on our end.

And the future generations — children born after December 15, 2025 to first-generation Canadians abroad — benefit from a clear, codified pathway, provided the connection threshold is met.

Why This Matters

Recognized Canadian citizenship carries real weight for an individual, well beyond the sentimental value of a renewed family connection. A few of the practical benefits worth thinking about:

• A second passport. Canadian passport holders enjoy visa-free or visa-on-arrival access to roughly 185 countries.
• The right to live, work, and study in Canada without a visa or permit. Citizenship removes any need for permanent residence applications, work permits, or study permits — useful for anyone considering a move, a sabbatical, education for children, or eventual retirement in Canada.
• The ability to sponsor immediate family. A Canadian citizen can sponsor a spouse or common-law partner, dependent children, and in some cases parents and grandparents for Canadian permanent residence under the family class.
• Optionality during uncertain times. For Americans in particular, holding a second citizenship in a stable, treaty-allied country has become a more frequently-discussed form of personal planning. Bill C-3 has put that option on the table for many people who never expected to have it.
• Tax considerations are usually manageable. Canada taxes based on residence, not citizenship, so a newly-recognized citizen who continues to live outside Canada does not automatically acquire Canadian tax obligations. Citizenship does interact with tax residency, treaty positions, and estate planning in ways worth reviewing with qualified counsel before any move, but the headline concern that some applicants raise — "will I owe Canadian tax just for having the passport?" — generally does not apply.

For most applicants, the more accurate framing is not that Bill C-3 hands them a new identity, but that it hands them a choice they did not previously have.

What to Do Next

Citizenship under Bill C-3 may be automatic — but proving it is not. To act on the change, three steps generally apply:

1. Map the chain of descent. Citizenship by descent claims rise or fall on documentation. Birth, marriage, naturalization, and citizenship records must be assembled for each generation linking the applicant back to a Canadian-born or naturalized ancestor. Older records — especially from provincial archives, parish registers, or foreign jurisdictions — can take time to retrieve, and the order in which family members apply often matters where the chain runs through multiple generations.

2. Apply for proof of citizenship. The application for a citizenship certificate is the formal mechanism for confirming status with IRCC. Processing times have lengthened materially since Bill C-3 came into force — IRCC is currently quoting roughly 9 to 12 months (as of April 2026), and complex multi-generational files often take longer. Once the certificate is issued, a Canadian passport application is usually the natural next step.

3. Plan around the substantial connection test for future births. Canadian parents born abroad who are planning families internationally should think early about how — and when — they will accumulate the 1,095 days in Canada needed to transmit citizenship to a child born after December 15, 2025. IRCC has indicated further guidance is forthcoming on how the days are counted and documented.

A Note on Strategy

For most people exploring Bill C-3, the question isn't whether to "become" Canadian — for many, the law has already answered that — but how to confirm and act on a citizenship that may have been theirs all along. A large share of new applicants are Americans with a Canadian grandparent or great-grandparent who, until December 15, 2025, sat outside the chain of descent. Others are children and grandchildren of Canadians who built lives abroad decades ago and never imagined the rules would catch up to their family in this way.

The practical work tends to be less about legal theory and more about evidence. The chain has to be built one generation at a time, with the right records in the right form, and the order in which family members file can shape how quickly the picture comes together. With application volumes climbing and provincial archives already feeling the pressure, the families who move early are generally the ones who finish first.

If you suspect Bill C-3 may apply to you or your family, the time to start building the file is now — before processing times stretch further and before archival records become harder to retrieve.

Citizenship by descent has become a core focus of our practice since Bill C-3 came into force. We work with individuals and families across the U.S. and abroad to assess eligibility, assemble multi-generational documentation, and file proof-of-citizenship applications under the new framework. If you think Bill C-3 may apply to you or your family, schedule a consultation to talk through the next steps.

The content above is provided for informational purposes only and reflects the information available at the time of publication. It does not constitute legal advice. For guidance on specific immigration matters, please consult an immigration attorney to discuss your case-specific inquiries.