Canada's New Citizenship Rules: What's Changed and Why it Matters

2025, saw the implementation of the most significant changes to Canadian citizenship laws in decades, reshaping how Canadian citizenship is passed down by descent. These updates, anchored in Bill C-3, An Act to amend the Citizenship Act (2025), aim to modernize the law so it better reflects today’s global and diverse families.

Since 2009, Canada’s Citizenship Act has included a rule known as the first-generation limit (FGL), which means that Canadian citizens who themselves have citizenship by descent (born abroad to Canadian parents) cannot not pass citizenship on to their own children born outside Canada. In 2023, the Ontario Superior Court of Justice found this rule unconstitutional for creating inequality in citizenship rights. The government was then given deadlines to fix the law and ensure fairness.

Under Bill C-3, children born outside Canada to Canadian parents — including Canadians by descent — will now be eligible for citizenship by descent, provided a key condition is met:

• the Canadian parent must demonstrate a “substantial connection” to Canada, most clearly by having spent at least 1,095 days (about three years) physically in Canada before the child’s birth or adoption.

People who were denied citizenship in the past due to the FGL will now have their citizenship restored retroactively if they qualify. This includes cases where individuals were born or adopted before the law comes into force and would have automatically been citizens if not for the old rules. Bill C-3 also covers children adopted outside Canada — something that was previously a complex and an often exclusionary process — and grants them citizenship under similar conditions on “substantial connection.”

Since the law is meant to fix a constitutional issue, the government has kept interim measures in place while waiting for Bill C-3 to officially come into force. These allow people affected by past rules to apply under transitional provisions — with Citizenship and Immigration Canada guiding applications in alignment with the new framework.

What is a substantial connection?

The requirement for a substantial connection primarily involves physical presence in Canada — 1,095 cumulative days — before the birth or adoption of the child. This is similar to the residency requirement for naturalization but is designed specifically to ensure a real tie to Canada in order to pass on citizenship rights.

Lawmakers and officials have stressed that this is about keeping citizenship meaningful and anchored in lived connections, rather than purely hereditary rights.

When does Bill C-3 come into effect?

Bill C-3 has received royal assent and is expected to come into force in January 2026. Until then, interim measures remain in place, and Citizenship Canada continues processing applications under transitional rules.

Canada’s 2025 changes to its citizenship laws represent both a correction of past inequities and a forward-looking approach to what citizenship means in a globally connected world. These updates ensure that families with strong ties to Canada — whether through birth, adoption, or heritage — are not unfairly excluded from the rights and privileges of Canadian citizenship. Whether you’re living in Toronto, Tokyo, or Toronto via Tokyo, these reforms could reshape your family’s future — making Canada a more inclusive place for generations to come.

For more information on Bill C-3 click HERE.