Canadian Citizenship by Descent Deadline: Do You Have to Apply?

If you're eligible for Canadian citizenship by descent, that citizenship doesn't expire. There's no statutory deadline to file your application, and you won't lose your status by waiting.

But that doesn't mean timing doesn't matter. Delays create real, practical problems that can make proving your claim harder or even impossible down the line.

Your citizenship doesn't have an expiry date

Under Bill C-3, which came into force December 15, 2025, anyone born outside Canada to a Canadian-citizen parent is a Canadian citizen by descent. This removed the "first-generation limit" that previously capped descent at one generation outside Canada.

If you meet the eligibility criteria through your parent or grandparent, you've been a Canadian citizen since birth. That status is retroactive and permanent. It doesn't lapse if you don't apply for proof within a certain timeframe.

The Application for Citizenship Certificate (CIT 0001) is not an application for citizenship itself. It's a request for proof of a citizenship you already hold.

There is no deadline set by law to apply for that proof.

But waiting creates real risks

Even though your citizenship status won't disappear, the evidence you need to prove it can. And the longer you wait, the more likely these problems become:

Provincial vital statistics archives slow down and backlog

Most applicants need their Canadian-born grandparent's long-form birth certificate to establish the chain of descent. These are issued by provincial vital statistics offices, and processing times have grown significantly in recent years.

Ontario's ServiceOntario, for example, now quotes 15-20 weeks for mail-in requests. British Columbia and Alberta have similar delays. Quebec has its own system and requires certified translations for French-language documents, adding more time.

When demand spikes—after major policy changes or media coverage—these offices backlog further. The longer you wait, the more likely you'll face a months-long delay just to obtain a required supporting document.

Older relatives who can explain gaps in the chain pass away

Not every family kept meticulous records. Sometimes you need a parent, aunt, or uncle to clarify:

• Which province a grandparent was actually born in
• Whether a grandparent naturalized as a Canadian citizen or was born one
• Full legal names before and after marriage
• Details of moves, remarriages, or name changes

Once those relatives are gone, reconstructing the chain becomes much harder. In some cases, it becomes impossible without expensive genealogical research or statutory declarations from multiple third parties.

Documents get lost, damaged, or destroyed

Paper records degrade. Floods, fires, and moves destroy family archives. The birth certificate your grandmother kept in a drawer for 70 years might not survive another decade.

Provincial archives are generally reliable, but older records—especially from before 1920—can have gaps. If you wait too long and your family's copy is lost, you may find yourself unable to prove a link in the chain.

IRCC processing queues grow

Processing times for citizenship certificates currently sit at 9-12 months. But that's based on current application volumes.

Bill C-3 opened eligibility to potentially hundreds of thousands of people who were previously cut off by the first-generation limit. As awareness spreads, IRCC's Sydney processing centre will see more applications. Processing times will grow.

The sooner you apply, the sooner you get in the queue.

The substantial connection test and future generations

Here's the other urgency: if you plan to have children while living outside Canada, waiting to claim your citizenship can affect them.

For anyone born abroad after December 15, 2025, the substantial connection test applies. To pass citizenship to a child born outside Canada, the Canadian-citizen parent must have spent 1,095 cumulative days (three years) physically present in Canada before the child's birth.

If you were born abroad and claim citizenship by descent, you likely don't meet that threshold yourself—especially if you've never lived in Canada. That means:

• If you wait to claim your citizenship until after your child is born, your child is not automatically a Canadian citizen
• If you claim it before your child is born but haven't accumulated 1,095 days in Canada, your child still isn't eligible
• To pass citizenship to the next generation, you need to either move to Canada for three years before having children, or ensure they're born in Canada

This doesn't affect your own status. But it creates a generational break. Your future children won't have the same opportunity you do unless you act strategically.

For more on this, see our guide to citizenship through a great-grandparent, which explains how the chain works across multiple generations.

When you should apply

There's no universal answer, but here are situations where applying sooner makes sense:

• You're planning to have children abroad and want to give yourself the option of passing citizenship to them (even if it means relocating to Canada temporarily to meet the substantial connection requirement)
• You have aging relatives who hold key information about your family's immigration history
• You only have one copy of a critical document (your parent's birth certificate, your grandparent's naturalization record, etc.)
• You want to sponsor family, work in Canada, or access benefits that require proof of citizenship
• You're American and want dual citizenship for travel, retirement, or contingency planning (see dual US-Canadian citizenship and taxes)

If none of those apply and you're confident your documentation is secure and accessible, waiting a year or two is unlikely to hurt. But waiting a decade or more increases the risks significantly.

What to do now

If you think you're eligible under the grandparent pathway or another route, the best first step is to confirm your eligibility and understand what documents you'll need.

Start by taking our free eligibility quiz at /check. It takes two minutes and will tell you whether you qualify, what documents to gather, and what timeline to expect. From there, arryv can guide you through the full CIT 0001 application, from document collection to final submission.

You don't have a legal deadline. But you do have a practical one. The sooner you act, the easier the process will be.