How Long Do You Have To Sue Someone in Ontario?

If someone has wronged you and you are thinking about taking legal action, one of the first questions you need to ask is: how long do I actually have to do this?

In Ontario, most civil claims have a strict time limit. If you miss it, you may lose the right to sue entirely, no matter how strong your case is. That time limit is called a limitation period, and understanding how it works could make the difference between having a legal remedy and losing one.

This article explains what limitation periods are in Ontario, how the general rule applies, and why the details matter so much. It is meant as general information only. Because the facts of your situation can affect when the clock starts, how long it runs, and whether any exceptions apply, you should speak with a lawyer if you think you may have a claim.

The General Rule: Two Years

Ontario's Limitations Act, 2002 sets out the general limitation period for most civil claims. The basic rule is two years. That means you generally have two years from when you first knew, or reasonably ought to have known, that you had a claim worth pursuing.

This covers a wide range of situations: unpaid debts, breach of contract, negligence, property damage, personal injury, and many other civil disputes. Two years sounds straightforward, but the starting point of that two-year window is where things can get complicated.

When Does the Clock Start? The Discoverability Rule

The two-year period does not always start on the date the incident happened. Under the discoverability rule, the limitation period generally begins when you knew, or reasonably should have known:

• that you suffered a loss or injury,

• that the loss was caused by someone else's act or omission, and

• that legal action is an appropriate way to address it.

In some cases, this means the limitation period starts on the day of the event. In others, it might start later, such as when you receive a diagnosis, discover a defect, or first find out who was responsible. Because discoverability depends on the specific facts, it is not always obvious when your two-year window began. This is one reason why getting legal advice early is so important.

The 15-Year Absolute Limit

There is also an outer cap under Ontario law known as the ultimate limitation period. Regardless of when you discovered the claim, you generally cannot start a lawsuit more than 15 years after the act or omission that gave rise to it. This is sometimes called the absolute limit because it applies even if you did not know and could not reasonably have known about the claim.

There are exceptions to this outer limit as well, depending on the nature of the claim, but the 15-year cap applies in many situations.

Are There Exceptions to the Two-Year Rule?

Yes, and this is where things can get significantly more complicated. Depending on the type of claim and who is involved, the limitation period may be different, suspended, or extended. Some situations where the standard two-year rule may not apply include:

• Claims involving minors: the limitation period may be paused while the person is under 18 years old.

• Claims against municipalities or public bodies: shorter notice periods and filing deadlines may apply, sometimes as short as 10 days after an incident.

• Sexual assault and other serious misconduct claims: Ontario has removed limitation periods for certain types of claims, meaning there may be no time limit in those cases.

• Claims based on fraud or concealment: the limitation period may not run while the wrongful act is being hidden from you.

• Claims involving the Estate of a deceased person: different rules and timelines may apply.

This is not a complete list. The exceptions are numerous and fact-specific. If you are unsure whether an exception applies to your situation, you should speak with a lawyer as soon as possible.

What Happens If You Miss the Limitation Period?

Missing the limitation period is serious. In most cases, if you start a lawsuit after the deadline has passed, the other party can raise the expired limitation period as a defence and have your claim dismissed. The court generally does not have the ability to extend the period just because the circumstances seem unfair.

This is why timing matters so much. Even if you are not sure whether you have a strong case, getting legal advice early protects your options. The longer you wait, the more risk there is that the deadline will pass.

Why You Should Not Wait

People often delay looking into legal action because they are hoping the situation will resolve itself, because they are not sure if they have a case, or because they are concerned about cost. These are all understandable reasons. But the limitation period does not pause while you wait to see what happens.

Getting a consultation with a lawyer early does not mean you are committed to suing anyone. It means you will know where you stand and whether you need to act before a deadline closes the door on your options.

If you think you may have a civil claim in Ontario, the safest approach is to get legal advice sooner rather than later.

FREQUENTLY ASKED QUESTIONS

Q: I was injured two years ago. Is it too late to sue in Ontario?

A: It depends on when your two-year limitation period actually started. If you knew about the injury and who was responsible on the day it happened, the two-year window may have already passed. But if you did not discover the full extent of the harm, or who caused it, until later, the clock may have started at a different point. There are also some exceptions that could affect the timeline. You should speak with a lawyer as soon as possible to find out whether you still have options, because waiting any longer may put those options at risk.

Q: Does the two-year limitation period apply to all types of lawsuits in Ontario?

A: The two-year period under Ontario's Limitations Act, 2002 applies to most civil claims, but not all of them. Some types of claims have their own specific timelines set out in other legislation. Claims against municipalities, for example, may require notice within a very short window after an incident. Certain claims involving sexual assault or other serious misconduct have had limitation periods removed entirely. Estates-related claims can follow different rules as well. Because the type of claim you have affects how much time you may have, it is worth speaking with a lawyer to understand which rules apply to your situation.

Q: Can the limitation period be extended if I did not know I had a claim?

A: Potentially, yes. Ontario's limitation period is tied to discoverability, meaning the two years generally begins when you knew, or reasonably ought to have known, that you had a claim. If you genuinely could not have discovered the loss or who caused it any earlier, the limitation period may not have started until you found out. However, the 15-year outer cap still applies in most cases, regardless of when you discovered the claim. Whether an extension applies to your situation depends on the specific facts, and you should get legal advice before assuming you still have time.

Q: What if the person who hurt me is a child, or I was a child when it happened?

A: Ontario's limitation rules include provisions that may pause or affect the limitation period when a minor is involved. If the potential plaintiff (the person bringing the claim) was under 18 when the incident occurred, the limitation period may not start running until they turn 18. If the potential defendant is a minor, different considerations apply. These rules can be fact-specific and interact with other parts of the law, so if the circumstances involve anyone under 18, you should speak with a lawyer to understand how the timing rules apply to your situation.

CONTACT DEVLAWS

If you are concerned about a potential claim and are not sure how much time you have, DevLaws can help you understand where you stand. Contact DevLaws today to schedule a consultation.

contact@devlaws.com  |  +1 437 290 0424  |  devlaws.com

 

DISCLAIMER

This article is provided for general information purposes only and does not constitute legal advice. It is not intended to create a lawyer-client relationship. Laws and regulations can change, and the information here may not reflect the most current developments. Every situation is different, and the information in this article may not apply to your specific circumstances. Limitation periods depend on the facts of each case, and exceptions may apply. If you think you may have a legal claim in Ontario, you should consult a qualified lawyer for advice tailored to your situation. DevLaws does not guarantee any particular outcome or result.