Bill C-3: what changed for citizenship by descent

For fifteen years, a single sentence in the Citizenship Act decided the fate of thousands of Canadian families: citizenship stops at the second generation born abroad. Bill C-3, passed in 2025, rewrote that sentence. Here is what changed, who benefits, and what it means if your Canadian parent or grandparent left Canada before you were born.

The problem Bill C-3 solves

Before 2009, Canada’s citizenship law had grown by accretion — the 1947 Act, the 1977 Act, and various fixes in between — and the result was a maze. The government’s 2009 reform simplified it but introduced the first-generation limit: citizenship by descent could pass to the first generation born outside Canada, but no further. A Canadian born in Toronto could pass citizenship to a child born in Michigan; that child, being a citizen by descent, could not pass it to their child born in Michigan — even if the whole family moved back to Toronto the next day.

Courts found that distinction arbitrary. In 2023 the Ontario Superior Court ruled the first-generation limit unconstitutional for children born abroad to Canadian parents who were also born abroad. [VERIFY] The federal government chose not to appeal. [VERIFY] Bill C-3 is the legislative response: Parliament’s attempt to fix the limit in a way that respects both the court ruling and the principle that citizenship should track a real connection to Canada.

What the new law actually says

Bill C-3 replaces the blanket second-generation cutoff with a substantial-connection test. A Canadian parent who was themselves born outside Canada can pass citizenship to a child born abroad if the parent has spent at least three years of physical presence in Canada before the child’s birth or adoption. [VERIFY] The law counts days: 1,095 of them. [VERIFY]

Three consequences worth spelling out:

• If your Canadian parent was born in Canada, nothing changes for you — the first-generation limit never applied to that parent, and the chain was never at risk.
• If your Canadian parent was born abroad to a Canadian parent and later lived in Canada for at least the required period before you were born, the limit no longer blocks your claim.
• If your Canadian parent was born abroad and never lived in Canada long enough, the limit may still apply to you. [VERIFY] The law is deliberately aimed at families with a genuine ongoing connection, not citizenship passed indefinitely through families who never returned.

The first-generation limit, in historical order

To understand who Bill C-3 covers, it helps to see the timeline. Canadian citizenship itself only dates to 1947 — before that, Canadians were British subjects, and descent rules followed British law. [VERIFY] The 1947 Act allowed citizenship to pass to children born abroad, but with loss provisions and retention requirements that ensnared many families — the origin of the Lost Canadians. The 1977 Act removed some barriers, including retention requirements, but the first-generation limit as we know it arrived with the 2009 amendments. [VERIFY]

Bill C-3’s key dates, all to be confirmed before relying on them: royal assent in March 2025. [VERIFY] The new substantial-connection rules and interim measures for previously rejected applicants were phased in thereafter. [VERIFY] IRCC published guidance for affected families, and applications under the new rules go through the same proof-of-citizenship process described in our CIT 0001 guide.

Who is covered — and who isn’t

Bill C-3 reaches further than the court ruling required. It addresses people who had applied and been refused under the old limit, and in some cases people who never applied because the law made their situation hopeless. [VERIFY] But it is not a blanket restoration. Generally not covered: third and later generations born abroad with no Canadian residence anywhere in the chain; people whose claim failed for reasons other than the first-generation limit, such as an ancestor who renounced or lost citizenship; and situations where an adoption or parentage question was decided under another country’s law. [VERIFY]

The honest summary: Bill C-3 converts “born abroad to a Canadian born abroad” from an automatic dead end into a question about how much your Canadian parent actually lived in Canada. If the answer is “years,” your odds are good. If it’s “never,” you may still be outside the law’s reach — and documenting your ancestor’s life in Canada becomes central to establishing what connection existed.

Frequently asked questions