Limitation Period for Ontario Small Claims Court Defendants

One of the first things to check when you're served with a Small Claims Court claim in Ontario is whether the plaintiff waited too long to sue. If they did, the claim may be statute-barred — and you can raise that as a complete defence.

The 2-Year Basic Limitation Period

Ontario's Limitations Act, 2002 sets a 2-year basic limitation period for most civil claims. The clock starts on the date the plaintiff knew, or should have known, that they had a claim against you. This is called the "discoverability" rule.

For a contractor dispute where the homeowner discovered defective work in March 2024, the claim must be issued by March 2026. If they wait until June 2026 to file the Plaintiff's Claim (Form 7A), the claim is presumptively time-barred.

The 15-Year Ultimate Limitation Period

Even if the plaintiff argues they didn't discover the problem until recently, the Limitations Act generally imposes an ultimate limitation period of 15 years after the act or omission that caused the loss. Statutory exceptions apply.

How to Raise the Limitation Defence

If you believe the claim is time-barred, you must raise it in your Defence (Form 9A). State clearly that the Plaintiff's Claim is statute-barred under the Limitations Act, 2002 because the basic limitation period expired before the claim was issued.

Include the specific dates:

• When the event or transaction occurred
• When the plaintiff knew or ought to have known about the claim
• When the claim was actually issued (the date on Form 7A)

The burden then shifts to the plaintiff to prove that the claim was discovered within the 2-year window. If they can't, the court must dismiss the claim.

Discoverability Disputes

The limitation defence isn't always clean. The plaintiff may argue that they didn't discover the defect, breach, or loss until later — and that the clock didn't start until that later date. Common scenarios:

• Latent construction defects — water damage that wasn't visible until a wall was opened two years after the work was completed
• Delayed billing disputes — invoices that were sent to the wrong address and only came to the plaintiff's attention later
• Ongoing relationships — where the parties continued doing business and the breach only became clear when the relationship ended

The court looks at when a reasonable person in the plaintiff's position would have known they had a claim. Willful blindness or failure to investigate obvious problems doesn't extend the clock.

Claims That Have Different Limitation Periods

Not every dispute follows the standard 2-year rule. Some exceptions:

• Claims against municipalities — may have shorter notice periods under the Municipal Act
• Construction lien claims — governed by the Construction Act with its own 60-day and 90-day timelines (these usually go to Superior Court, not Small Claims)
• Consumer Protection Act claims — the 2-year limitation applies, but discoverability can be argued more broadly
• Debts acknowledged in writing — a qualifying written acknowledgment of liability for a liquidated sum, made to the claimant before the limitation period expires, can restart the limitation clock under Section 13 of the Limitations Act

Why This Matters for Your Defence Strategy

A valid limitation defence can end the case entirely without a trial on the merits. Even if the plaintiff's underlying claim has merit — even if you do owe the money or did cause the damage — the court must dismiss a time-barred claim if you raise the defence.

This makes it worth checking dates carefully as soon as you're served. Pull out any contracts, invoices, emails, or records that establish when the transaction happened and when the plaintiff first complained. If more than two years passed between the plaintiff's knowledge and the filing date, you may have a complete defence.

Our Defending a Claim in Ontario Small Claims Court guide walks through how to identify and plead a limitation defence alongside your other response options within the 20-day deadline.

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