The CRA's Collections Limitation Period Explained

Old tax debts don't disappear the way some people hope, but they also aren't collectible forever. Canadian tax law puts a time limit on how long the CRA generally has to use formal legal action to collect a debt — but that limit is easy to misunderstand, and several common actions can restart the clock before it ever runs out.

If you're dealing with an old CRA balance and wondering whether it's simply "too old" to worry about, the honest answer depends on facts that are easy to get wrong without checking your specific account history. This article explains the concept in general terms and where the real risk usually lies.

Because the exact time limit, and the technical rules around it, can change and depend on your specific circumstances, don't rely on a number you've seen online — verify your situation with a professional before assuming a debt is no longer collectible.

What "Limitation Period" Means in This Context

A collections limitation period is the window during which the CRA can use formal legal enforcement — court action, liens, and similar tools — to collect a specific tax debt. It's a separate concept from the reassessment period, which limits how far back the CRA can go to reassess a return, and from the objection and appeal deadlines that apply to disputing an assessment in the first place. All three are time limits, but they answer different questions.

Why the Clock Almost Never Simply Runs Out on Its Own

The limitation period isn't a countdown that quietly expires while nothing happens. Several routine actions can restart or extend it, including:

1. The CRA taking a formal collection action within the current period — for example, issuing a Requirement to Pay or taking a step toward court enforcement.
2. You acknowledging the debt — in writing, or in some cases through conduct such as making a payment toward it.
3. You and the CRA agreeing to extend the period, which sometimes happens as part of negotiating a payment arrangement.

Because these triggers are common and easy to hit without realizing it, a debt that looks old on paper may still be well within an active limitation period once you account for the CRA's collection history on the file.

Why Business Owners and Estates Should Pay Extra Attention

A dormant corporate tax debt can resurface years later if the CRA took a collection step that most people inside the company never noticed at the time — a notice sent to an outdated corporate address, for instance, can still count as valid action even if nobody read it. Similarly, an estate trustee settling a deceased person's affairs should confirm whether any old CRA debt is genuinely closed before treating the estate as clear, since an unresolved balance can complicate the final distribution of assets.

What Happens After the Limitation Period Actually Ends

If the period genuinely expires without being restarted, the CRA generally loses the ability to use formal legal enforcement — liens, seizure, court certificates — to collect that specific debt going forward. This doesn't necessarily mean the debt is erased from CRA's books in every sense, and it doesn't retroactively undo enforcement steps already taken while the period was still running.

Common Mistakes People Make

• Assuming a debt is expired based on how long it's been since they last thought about it, rather than the CRA's actual collection activity on file.
• Making a "goodwill" partial payment without realizing it can reset the clock.
• Ignoring collection letters on the theory that the debt will simply age out, while the CRA is often actively taking steps that extend the period during that same silence.
• Confusing the collections limitation period with the reassessment period or an objection deadline — these are different time limits governing different questions.

Frequently asked questions