How Long After an Accident Can Someone Still Sue You in Canada?

An accident that seemed to end months ago can still turn into a lawsuit. The vehicle got fixed, the file closed, life moved on — and then a process server arrives. This isn't a loophole or bad luck. It's how Canadian limitation periods actually work, and the timing is more predictable than it feels from the receiving end.

How long after an accident can someone still sue me?#

In most provinces, 2 years from discovery — not 2 years from the collision. Ontario, British Columbia, Alberta, Saskatchewan, Manitoba, and Nova Scotia all run a basic 2-year limitation period that starts on the day the injured person knew, or reasonably should have known, that they were hurt, who caused it, and that suing was the appropriate response. Quebec runs on a different legal framework entirely: a 3-year prescription period under the Civil Code, calculated from the fault or from when the injury became known.

That single distinction — discovery, not the crash date — is why the "it's been over a year, I'm probably fine" instinct is often wrong.

Why does the clock start at discovery instead of the crash date?#

Because injuries don't always announce themselves immediately. Soft-tissue injuries, concussions, and psychological harm can take weeks or months to be diagnosed and understood as serious. The law's answer is to start the clock when the person reasonably knew they had a claim worth pursuing, not on the calendar date of impact. Two people in the same fender bender can have different limitation clocks if one develops symptoms sooner than the other.

What does the 2-year rule actually look like province by province?#

Ultimate limitation periods apply regardless of discovery and cap how long a claim can ever be brought. Rules for minors, mental incapacity, and specific claim types can extend or pause these periods — confirm your own deadline with a lawyer, not this table.

Does moving to a different province change your limitation period?#

Generally no — the rules that apply are usually the ones tied to where the accident happened, not where you currently live. A Manitoba resident who moved to Ontario a year after causing a crash in Winnipeg is still typically dealing with Manitoba's limitation rules for that claim, since the loss occurred there. Moving provinces changes your mailing address; it doesn't rewrite which limitation regime governs an existing claim. This is a genuinely technical area where the general pattern above is a reasonable starting point, not a substitute for confirming your specific situation with a lawyer once a real claim is in front of you.

What if I've already assumed it's "over" because a year has passed?#

Don't. A year, even eighteen months, is comfortably inside the window in every province listed above. The safest habit is to assume any injury claim from an accident remains possible until at least two years have passed from when the other person's injuries were reasonably clear — later if there's any suggestion of a delayed diagnosis. For what to actually do if a claim does land, see I've Been Served With a Statement of Claim.

Can a child sue me years after they were hurt as a minor?#

Yes, and this is the exception that catches the most people off guard. In most provinces, the limitation period doesn't run at all while the injured person is a minor — the clock effectively starts when they reach the age of majority (18, in most provinces), not when the incident happened. A child hurt in your care, on your property, or in a crash you caused at age eight can become a lawsuit in their early twenties. Limitation Period covers the minors rule in more detail; the practical point here is that an incident involving a child is never safely "closed" the way an adult claim eventually is.

Does no visible damage mean the claim is dead?#

No, and this belief costs people more than it should. "We barely touched bumpers, nobody was hurt" is a common and often accurate read of the scene — but soft-tissue and delayed-onset injuries routinely follow low-speed, low-damage collisions, and claims can be filed, and later amended upward, well after the fact as the injury's true extent becomes clear. A Fender Bender and a Million-Dollar Claim walks through why the size of the vehicle damage and the size of the eventual claim aren't reliably connected.

Why does the lawsuit so often arrive close to the deadline, not right away?#

Because there's rarely a reason to file early. A plaintiff's lawyer typically wants time to fully understand the injury, run treatment through its course, and value the claim properly before filing — and the limitation deadline is the outer boundary of that runway, not a target date. A claim arriving at the 18-to-23-month mark, right as the two-year window is closing, is standard litigation practice. It reads as an ambush from the receiving end; from the filing side, it's simply due diligence completed on schedule.

A common version: two drivers exchange information after a low-speed collision, nobody appears hurt, and both insurers close their property-damage files within weeks. Sixteen months later, one driver's soft-tissue symptoms are formally diagnosed as a permanent impairment, their lawyer finishes valuing the claim, and a statement of claim is served two months after that — arriving just inside the two-year window from when the injury was reasonably discovered, not from the collision date. Nothing about that timeline is unusual once you know which clock was actually running.

I've switched insurers since the accident — who actually defends me now?#

The insurer you had on the date of the crash, regardless of who insures you today. Coverage attaches to the policy in force when the incident happened, not to whichever company currently has your business. If you're served years later and have since switched insurers, report the claim to the company that covered you at the time — your current insurer generally has no obligation to the claim at all, and the wrong report can waste the time you don't have to spare.

What should you actually do if you get served long after an old accident?#

1. Don't assume it's fraud or a mistake because time has passed. Multi-year gaps are the normal pattern for injury claims, not the exception.
2. Identify your insurer at the time of the crash, not your current one, and report the claim to them immediately.
3. Read the deadline stated on the claim itself. Being served doesn't mean you're out of time — it means the clock to respond has just started, on a separate and much shorter timeline.
4. Compare the amount claimed to the liability limit you carried at the time, not your current policy. If it's near or above that older limit, the excess-exposure questions this site covers start to apply.

The bottom line#

Most accidents genuinely don't turn into lawsuits, and for the majority of people who read this page, nothing more will ever come of the fender bender or slip they're thinking about. The honest addition is that "nothing has happened yet" and "nothing can happen" are different statements — in most of Canada, a claim can arrive up to 2 years after it was reasonably discovered, longer for a minor, and on a different clock entirely in Quebec. The insurance that answers a claim like that is the coverage you carried the day it happened, which is one more reason to know your limit now rather than after the process server does.