Yes, for most American families. If you were born in the United States before December 15, 2025, and your parent was a Canadian citizen when you were born, IRCC says you are likely Canadian. That is why Canadian citizenship through a grandparent is now possible: Bill C-3 removed the old first-generation limit for earlier births.
This guide uses IRCC’s “Check if you may be a citizen” page, last modified February 18, 2026, and IRCC’s Bill C-3 news release of December 15, 2025. It is for Americans whose Canadian link is a grandparent, not a parent.
Am I a Canadian citizen by descent?
Trace your family line one generation at a time. Each link is tested against the law in force when that person was born, so you see exactly where your chain holds and where it breaks. About three minutes, and no account needed.
Check my family lineHow does Canadian citizenship through a grandparent work after Bill C-3?
It works like a chain: your grandparent passed citizenship to your parent at birth, and your parent passed it to you.
Before Bill C-3, the chain usually stopped at your US-born parent. Now IRCC says that in most cases, a person born abroad to a Canadian parent before December 15, 2025 is a citizen, in any generation. So the chain can reach you.
Here is a made-up example of Canadian citizenship through a grandparent. Grandpa was born in Manitoba in 1935 and never became American. Your dad was born in Ohio in 1962, and you were born in Texas in 1990.
IRCC’s guide CIT 0001 says any person born outside Canada to a Canadian parent before December 15, 2025 is automatically a citizen, including people in the second or later generation born abroad. That is you.
Was your grandparent still Canadian when your parent was born?
Families miss this test most often. Your grandparent had to be a Canadian citizen on the day your parent was born.
The 1947 law, in force until February 14, 1977, did not allow dual citizenship. IRCC’s citizenship manual says it had several rules that took citizenship away automatically. So a Canadian who became a citizen of another country in those years could lose Canadian citizenship.
So if Grandpa became a US citizen in 1955 and your mom was born in 1960, look closer. A 2009 change restored citizenship to many people who lost it this way. Bill C-3 then reached more Lost Canadians and their descendants.
The dates still decide the result. Write down when your grandparent naturalized (became a citizen of another country), if they ever did, and when your parent was born.
If your grandparent was born in Canada before January 1, 1947, Canadian citizenship did not exist yet. They were a British subject. The 1947 rules decide whether they became Canadian on that date.
Was your parent a Canadian citizen when you were born?
Your parent must have been a Canadian citizen on the day you were born. IRCC’s guidance says a person born outside Canada before December 15, 2025 is likely a citizen if their parent was a citizen at that time. For most US-born children of a Canadian, Bill C-3 is what makes that parent count.
Two things can break this link. First, your parent may have formally given up (renounced) Canadian citizenship. IRCC says a person who renounced and has not applied to get it back is likely not a citizen.
Second, a parent born abroad between February 15, 1977 and April 16, 1981 may have lost citizenship at age 28 under the former section 8. IRCC says Bill C-3 gives citizenship back to people in that group, effective from the date they lost it, so this usually no longer breaks the chain. Our guide to Section 8 Lost Canadians and the age 28 rule explains the details.
Does the 1,095-day rule apply to you?
Only if you were born on or after December 15, 2025. For those births, IRCC says a Canadian parent who was also born abroad must have spent at least 1,095 days in Canada before the child was born. Adults reading this were born long before that date, so the rule does not touch your own claim.
It can matter for your children, though. If you are the US-born Canadian in your family and you have a baby after December 15, 2025, your own days in Canada count. Keep travel records from now on.
How do you check Canadian citizenship through a grandparent, step by step?
Start with dates, not documents. Most families order records first and only later find out that one date breaks the chain. Work through these five steps in order, and stop to get advice the moment a date looks wrong, before you pay any record office.
- Write down three dates and places: your grandparent’s birth, your parent’s birth and your birth.
- Find out if your grandparent ever became a citizen of another country, and when. A US naturalization certificate or the USCIS Genealogy Program can answer this.
- Ask whether anyone in the chain ever renounced Canadian citizenship.
- Order a birth record for each person from the original issuing office, such as a Canadian province or your state vital records office.
- Apply to IRCC for a citizenship certificate. IRCC charges $75 per person.
Our citizenship by descent eligibility checklist for Americans covers each test in more detail. Our complete document guide for Bill C-3 claims lists the records IRCC accepts.
What if Canadian citizenship through a grandparent breaks at one link?
A broken link does not always end the claim: if your grandparent lost citizenship before your parent was born, check whether a later law restored it and from what date. If the chain truly fails, IRCC says you may still be able to apply for a grant of Canadian citizenship. Permanent residence is another route to look at.
These cases turn on small facts, like the month of a naturalization. They are worth a proper review before you file, because a refused certificate costs you months. Our Canadian citizenship by descent services page explains how we handle a full claim.
Frequently asked questions
Can I claim through a great-grandparent too?
Often, yes. IRCC says a person born outside Canada to a Canadian parent before December 15, 2025 is automatically a citizen, and its guide applies this to the second and later generations, so the chain can reach past a grandparent. Every link still has to hold, and older lines often depend on the British subject rules that applied before January 1, 1947. Each extra generation adds one more date to check.
Will claiming Canadian citizenship affect my US citizenship?
Not from the Canadian side. Canada has allowed dual citizenship since February 15, 1977, so Canada will not ask you to give up your US passport. The US State Department says US law does not require a citizen to choose between US citizenship and another nationality. A citizenship certificate confirms a status you already hold.
Can I apply online if my parent was born in the United States?
Usually not. IRCC allows an online application for a first certificate only when your Canadian parent was born in Canada on or after February 15, 1977, or became a citizen by grant on or after April 17, 2009. In a typical grandparent claim your parent was born abroad, so plan on a paper application. Use IRCC’s online eligibility questions to confirm before you start.
The rules described here come from guidance published by Immigration, Refugees and Citizenship Canada and the Citizenship Act, checked on October 30, 2026.
Not sure your family line holds at every link? Book Your Strategy Consultation and we will check each date with you.
