Bill C-3 Explained: What Changed for Canadian Citizenship by Descent

Royal Assent: November 20, 2025 | In Force: December 15, 2025

Bill C-3 is the most significant change to Canadian citizenship by descent rules in decades. If you're an American with Canadian ancestry, this law may have opened a path to citizenship that didn't exist before.

What Bill C-3 Changed

Before Bill C-3, Canadian citizenship by descent was limited to the first generation born outside Canada. If your parent was Canadian but you were born in the US, you could claim citizenship. But your children could not — the chain stopped at one generation.

Bill C-3 removed this limit for anyone born before December 15, 2025.

This means:

• If your grandparent was Canadian → you may now qualify
• If your great-grandparent was Canadian → you may now qualify
• If your ancestry goes even further back → you may qualify through an unbroken chain

Old Rules vs New Rules

| | Old Rules (Before Dec 15, 2025) | New Rules (Bill C-3) | |---|---|---| | Parent born in Canada | Eligible | Eligible | | Grandparent born in Canada | NOT eligible | Eligible (if born before Dec 15, 2025) | | Great-grandparent born in Canada | NOT eligible | Eligible (if born before Dec 15, 2025) | | Future births (after Dec 15, 2025) | First-gen limit | Parent must show "substantial connection" (1,095 days in Canada) | | Application type | Proof of Citizenship | Proof of Citizenship |

The "Unbroken Chain" Requirement

Bill C-3 doesn't grant citizenship to everyone with Canadian ancestry. You must prove an unbroken chain of citizenship from your Canadian ancestor to you.

What this means: Every person between your Canadian ancestor and you must have been a Canadian citizen at the time their child was born.

Example of a valid chain:

1. Great-grandfather born in Nova Scotia, 1905 → Canadian citizen
2. Grandmother born in Boston, 1935 → citizen by descent (her father was Canadian)
3. Father born in Chicago, 1958 → citizen by descent (his mother was Canadian by descent)
4. You born in Portland, 1984 → citizen by descent under Bill C-3

Example of a broken chain:

1. Great-grandfather born in Canada, 1905 → Canadian citizen
2. Grandmother born in US, 1935 → Canadian citizen by descent
3. Grandmother renounced Canadian citizenship in 1955
4. Father born in 1958 → NOT a citizen (chain broke when grandmother renounced before his birth)

Who Is Now Eligible?

You may be eligible if ALL of the following are true:

1. You were born before December 15, 2025
2. You have a Canadian ancestor (parent, grandparent, great-grandparent, or further back)
3. There is an unbroken chain of Canadian citizenship from that ancestor to you
4. No one in the chain renounced Canadian citizenship before their child (the next link) was born

How to Apply

Citizenship by descent is NOT naturalization. If you qualify, you are already a Canadian citizen under law — you just need to prove it.

Application type: Proof of Canadian Citizenship (not a grant of citizenship)

Key documents needed:

• Your Canadian ancestor's birth certificate (proving they were born in Canada)
• Birth certificates for every person in the chain
• Any marriage certificates needed to prove name changes
• Your own birth certificate

Government fee: Approximately CAD $75

Important Dates

• November 20, 2025 — Bill C-3 receives Royal Assent
• December 15, 2025 — Bill C-3 comes into force
• December 15, 2025 — Cutoff date for "born before" provision

Official Sources

• IRCC: Citizenship rules changes 2025
• Government of Canada: Bill C-3 announcement