Canada’s citizenship rules changed significantly when Bill C-3 came into force on December 15, 2025. The legislation changed the rules surrounding Canadian citizenship by descent, particularly for people born or adopted outside Canada.

One question many families are now asking is: Can Bill C-3 be reversed, and could people who gained Canadian citizenship under the new rules lose it in the future?

The short answer is that Parliament can change Canadian citizenship legislation in the future, but changing the law is different from automatically cancelling citizenship that was legally acquired under the existing rules.

What Did Bill C-3 Change?

Before Bill C-3, Canada’s first-generation limit generally restricted Canadian citizens born or adopted abroad from passing citizenship automatically to children who were also born or adopted outside Canada.

Bill C-3 changed this framework. It allows certain people born or adopted abroad to acquire Canadian citizenship by descent beyond the first generation.

For people born or adopted before December 15, 2025, the new rules can restore or provide citizenship in circumstances where previous rules prevented it.

For people born or adopted abroad on or after December 15, 2025, additional requirements apply. In certain second-generation cases, the Canadian parent who was also born or adopted abroad must demonstrate at least 1,095 days of physical presence in Canada before the child’s birth or adoption.

This has expanded the number of people who may be eligible for Canadian citizenship by descent.

Can a Future Government Reverse Bill C-3?

Technically, Parliament can introduce new legislation to amend the Citizenship Act. Any future government could propose changes, but a bill would have to go through the Canadian parliamentary process before becoming law.

Importantly, changing citizenship rules in the future does not automatically mean that everyone who became a Canadian citizen under Bill C-3 would suddenly lose their citizenship.

Canada has previously changed citizenship legislation without simply removing citizenship from people who were already Canadian citizens under earlier laws.

Therefore, individuals who have legally acquired Canadian citizenship under the current legislation should distinguish between future changes to citizenship law and revocation of existing citizenship.

Can Canadian Citizenship Be Revoked?

Yes, but Canadian citizenship revocation is governed by specific legal rules.

According to Immigration, Refugees and Citizenship Canada (IRCC), citizenship may be revoked when it was obtained through fraud, false representation, or knowingly concealing material information. The process includes opportunities for the affected person to respond, and the Federal Court is involved in citizenship revocation cases unless the individual requests a decision by the Minister.

This means a future political decision to change citizenship-by-descent legislation is not the same thing as revoking someone’s citizenship because of a change in government policy.

What About Citizenship Certificates?

A Canadian citizenship certificate is evidence of Canadian citizenship; it is not what creates citizenship in every situation.

IRCC states that people who automatically became Canadian citizens under Bill C-3 can apply for proof of Canadian citizenship.

If you believe you may have become a Canadian citizen through a Canadian parent, grandparent, or another qualifying family connection, it is important to establish the complete family and citizenship chain with appropriate documentation.

Simply having a Canadian ancestor does not necessarily mean that every descendant automatically qualifies.

What Should You Do If You May Be Canadian by Descent?

If you believe you may qualify for Canadian citizenship by descent, consider:

• Reviewing your family’s Canadian ancestry.
• Confirming the citizenship status of the relevant parent or ancestor.
• Collecting birth, marriage, adoption and citizenship records.
• Establishing the connection between each generation.
• Checking which version of the Citizenship Act applies to your circumstances.
• Applying for a Canadian citizenship certificate or other appropriate proof where eligible.

IRCC provides official information about the current citizenship by descent rules and proof of citizenship requirements.

How ICC Immigration Can Help You Secure Your Future in Canada

Understanding Canada’s immigration system can be complicated, particularly when deciding between permanent residency, temporary residence and citizenship-related options.

ICC Immigration can assess your circumstances and help you understand which immigration pathway may be appropriate for your situation.

Our services include:

• Permanent Residency Applications: Assistance with Express Entry, Provincial Nominee Programs (PNPs) and other Canadian immigration pathways.
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• Family Sponsorship: Assistance with eligible Canadian family sponsorship applications.
• Immigration Guidance: Help understanding eligibility requirements, documentation and application procedures under current Canadian immigration rules.

Rather than relying on an immigration strategy that may not fit your circumstances, understanding your available Canadian immigration options can help you make informed decisions about your future.

Whether you are already in Canada or planning to immigrate, professional guidance can help you understand the requirements, prepare your application and navigate the process with greater clarity.