Disputing Only Part of a Claim in Ontario Small Claims Court

Not every lawsuit is all-or-nothing. Maybe the plaintiff is right that you owe something — just not as much as they're claiming, or not for every item on their invoice. Ontario's Small Claims Court process lets you dispute part of a claim small claims court proceedings this way: admitting what you genuinely owe while formally contesting the rest, rather than fighting the whole thing or rolling over completely.

Why Partial Disputes Are So Common

Disputes over money rarely split neatly into "entirely valid" or "entirely bogus." A contractor's invoice might include work you agree was done properly and work you believe was deficient. A loan repayment claim might be correct on the principal but wrong about extra fees or interest tacked on. Recognizing early which parts you genuinely dispute — and which you don't — makes your defence sharper and more credible.

Your Options When You Agree With Some of the Claim

You generally have a few paths available:

• File a defence that admits part and disputes the rest, explaining clearly which portion you accept and why you dispute the remainder
• Offer to pay the admitted amount directly to the plaintiff, which can sometimes resolve part of the dispute outside the court process entirely
• Let the court sort out the disputed portion through the normal settlement conference and, if necessary, trial process

Simply not responding at all is not a safe option — that risks a default judgment for the plaintiff's full claimed amount, not just the disputed part.

How to Structure a Defence That Admits and Disputes

1. Go through the claim line by line and identify exactly which amounts, items, or allegations you accept versus dispute.
2. State plainly in your Defence what you admit and what you don't — vague, general denials are less persuasive than a clear breakdown.
3. Explain your reasoning for the disputed portion — what you believe is wrong, overcharged, not owed, or not your responsibility.
4. File your Defence within the deadline, even if you're still refining your explanation for the disputed part.
5. Be prepared to discuss both parts at the settlement conference, since the court will often want to understand what's genuinely contested versus already agreed.

What Happens to the Part You Admit

Admitting part of a claim doesn't automatically end that portion of the case on its own — the court process still needs to formally address it, typically through the settlement conference or a negotiated resolution. In practice, though, clearly admitting an amount often narrows what actually needs to be argued, and can make settling the whole matter faster since there's less genuinely in dispute.

Why Ignoring the Rest Is a Mistake

Some defendants pay the part they agree with and assume that's the end of it, without formally addressing the disputed portion in court. That's risky: if you don't properly respond to the whole claim, the plaintiff may still be able to pursue default judgment on the unaddressed portion. A partial payment, made informally and without a clear written understanding, doesn't substitute for a proper Defence.

Checklist Before You File Your Defence

• [ ] Break the plaintiff's claim into specific components — what you accept, what you dispute
• [ ] Draft clear language in your Defence stating exactly what's admitted and what's contested, and why
• [ ] Don't rely on an informal partial payment alone to resolve your legal exposure
• [ ] Keep records of any communication with the plaintiff about the admitted portion
• [ ] File your Defence by the deadline, addressing the entire claim — not just the part you dispute
• [ ] Be ready to explain your position clearly at the settlement conference

Frequently asked questions