Citizenship · Bill C-3
Citizenship by Descent & Proof of Citizenship
On December 15, 2025, Bill C-3 rewrote Canada’s rules on citizenship by descent. Many people born abroad to a Canadian parent, including beyond the first generation, are now citizens automatically. The proof, however, is not automatic: it takes a citizenship certificate application, done right.
Dec 15
2025, the day Bill C-3 took effect
Automatic
Citizenship restored for many born before that date
1,095
Days a parent needs in Canada, births after Dec 15, 2025
Certificate
The document that proves it, before you travel
The change
What Bill C-3 actually did
Before Bill C-3, citizenship by descent stopped at the first generation born outside Canada. In December 2023, the Ontario Superior Court found that limit unconstitutional for many people; Bill C-3 answered it, taking effect December 15, 2025.
The result splits on one date. Born outside Canada before December 15, 2025 to a Canadian parent, including a parent who became Canadian through these changes, and you are, in most cases, automatically a citizen, whatever the generation. Born on or after that date in the second generation or later, and citizenship depends on your parent’s substantial connection: at least 1,095 days physically in Canada before your birth.
Anyone who was already a citizen stays a citizen, and generations are counted from the first person born or adopted outside Canada. Adopted children have a parallel route through a direct grant. Related: citizenship services, our Bill C-3 explainer.
The scenarios
Where you might fit
Three fact patterns cover most files, and each needs different evidence.
Most common
Born abroad before Dec 15, 2025
Second generation or later, born to a Canadian parent: in most cases you are now automatically Canadian, the certificate confirms it.
- Grandparent or parent Canadian by birth or naturalization
- Applies through chains created by C-3 itself
- Certificate application determines it formally
Born abroad on/after Dec 15, 2025
Second generation or later: your Canadian-by-descent parent must show 1,095 cumulative days in Canada before your birth.
- Physical presence, documented day by day
- Counted before the birth or adoption
- School, work, tax and travel records matter
Proof of citizenship
Whatever the path, the citizenship certificate is the document that proves it, for a passport, a job, a pension or the border.
- Certificate first, passport second
- Lineage documents across generations
- Interim-measure applications continue under C-3
Step by step
How a proof of citizenship application works
01
Map the lineage
Who was born where, who naturalized when, the generational chain decides the legal theory.
02
Assemble the vital records
Birth, adoption, marriage and citizenship records for each link in the chain, often across countries.
03
Prove the connection
For post-2025 births: the parent’s 1,095 days in Canada, documented, not estimated.
04
File for the certificate
The citizenship certificate application, with the evidence organized for the analyst who reads it.
05
Passport & travel
Certificate in hand, apply for the Canadian passport, IRCC’s recommended order before travelling.
The essentials
What a strong citizenship file shows
These files are decided on documents. Four things carry them:
- A complete generational chain, each link proven with vital records
- The correct legal basis: automatic by C-3, substantial connection, or adoption grant
- 1,095 days of parental presence evidenced where the birth is after Dec 15, 2025
- Consistent names, dates and documents across every record, discrepancies stall files
Why it matters now
Do not board a plane on an assumption
IRCC’s own guidance is to get the certificate first, then the passport, then travel. People who assume they are citizens and fly on a foreign passport risk border complications, and people who assume they are not citizens miss what C-3 quietly gave them, including the ability to pass citizenship to their own children.
There is also a flip side: some people became citizens automatically who never asked to be, with tax and other consequences. Renunciation is possible, but it is its own application. Either way, the first step is the same: find out, formally.
Work with me
How I help
For descendants
Children & grandchildren of Canadians
- Lineage analysis: are you already Canadian?
- Certificate applications with the evidence organized
- Substantial-connection (1,095-day) files for new births
- Passport sequencing and travel planning
For families
Planning across generations
- Adopted children: direct grant applications
- Documenting parental presence before a birth abroad
- Urgent proof needs before travel or deadlines
- Renunciation advice where citizenship is unwanted
Good to know
Citizenship by descent, answered
Quite possibly, if you were born outside Canada before December 15, 2025 to a parent who is Canadian (including one made Canadian by Bill C-3), you are in most cases automatically a citizen. The certificate application is how IRCC confirms it formally.
For children born or adopted outside Canada on or after December 15, 2025, in the second generation or later, the Canadian parent must have spent at least 1,095 cumulative days physically in Canada before the birth or adoption.
Vital records for every generational link, birth, adoption, marriage and citizenship documents, plus, for post-2025 births, evidence of the parent’s days in Canada: school and employment records, tax filings, travel history. The certificate application organizes all of it.
No, a passport application needs proof of citizenship first. IRCC’s recommended order is citizenship certificate, then passport, then travel.
No. IRCC has said applications in progress are processed under the new rules, no new citizenship certificate application is needed. Whether yours needs supplementing is worth checking.
Official Sources & Notes
Official sources: IRCC – Change to citizenship rules in 2025 (Bill C-3) · IRCC – Apply for a citizenship certificate · IRCC news – Bill C-3 in effect · Parliament of Canada – Bill C-3
This information is current as of July 2026 and is provided for general information only. It is not legal advice. Immigration programs, fees and requirements change frequently, and eligibility always depends on your specific facts. For advice about your situation, please book a consultation.
Find out, formally
If a parent or grandparent was Canadian, Bill C-3 may have changed your status. Book a consultation and we’ll map your lineage against the new rules, and build the certificate file that proves it.