Demand Letter Template Ontario: What to Write Before Filing a Claim

Most people skip the demand letter and jump straight to filing a claim. That's a mistake — not because you're required to send one (you're generally not), but because a well-written demand does three things that help your case before it even reaches the courtroom.

Why a Demand Letter Matters

It fixes your interest start date. Pre-judgment interest under Section 128 of the Courts of Justice Act starts accruing from the date you formally demanded payment. Without a demand letter, you might only get interest from the date you filed your claim — potentially weeks or months later.

It demonstrates reasonable conduct. Rule 1.03 of the Rules of the Small Claims Court requires parties to help the court reach "the just, most expeditious, and least expensive determination." A judge who sees that you gave the defendant a clear chance to pay before suing will view your conduct more favourably — and that matters when costs are awarded under Section 29 of the CJA.

It sometimes resolves the dispute. A formal letter with a deadline and the implicit threat of court action often prompts payment, especially when the debtor realizes you're serious and the amount owed is clear.

What to Include

A demand letter doesn't need legal language. It needs clarity. Here's what belongs in every one:

Your full legal name and contact details. Include your postal address, email, and phone number.

The debtor's full legal name and address. If you're writing to a business, use the exact corporate name from the Ontario Business Registry — not the storefront sign. A demand to "Bob's Reno Shop" that should have gone to "Robert Smith carrying on business as Bob's Reno Shop" weakens your paper trail.

A factual summary of the debt. State what happened in chronological order: the contract or agreement, what you paid or delivered, what the other side failed to do, and when. Stick to facts — no accusations, threats, or emotional language.

A specific dollar amount. Break it down: principal amount owed, any contractual interest, out-of-pocket losses. The total should match what you intend to claim on Form 7A.

A payment deadline. Give 10 to 14 calendar days from the date of delivery. This is long enough to be reasonable but short enough to maintain urgency.

Payment instructions. Specify exactly how they should pay — e-Transfer to a specific email, cheque payable to your legal name, wire transfer details.

A statement of next steps. Something like: "If payment is not received by [date], I intend to file a Plaintiff's Claim in the Ontario Small Claims Court to recover the amount owed, plus pre-judgment interest and court costs." This is not a threat — it's a factual statement of your legal right.

What Not to Include

• Threats of criminal prosecution, public embarrassment, or reporting to regulators as leverage
• Inflated or speculative damage amounts
• Language claiming you represent a court, law firm, or government body
• Personal insults or emotional grievances

The letter must be professional. Anything threatening, harassing, or misleading can be used against you at trial to paint you as the unreasonable party.

How to Deliver It

Proof of delivery matters more than the method. The best options:

Registered mail (Canada Post) — gives you a tracking number and delivery confirmation. This is the most common method and provides clean evidence.

Courier with signature — FedEx, Purolator, or any courier that captures a delivery signature.

Email with read receipt — acceptable as a supplement, but weaker on its own because the recipient can claim they didn't see it.

Whatever method you use, keep the tracking confirmation, delivery receipt, or courier signature record. You'll want this evidence if the debtor later claims they never received the demand.

After the Deadline Passes

If the deadline expires without payment (and without a reasonable counter-offer), you're ready to file your Plaintiff's Claim (Form 7A). Reference the demand letter in your statement of facts on the claim — it shows the court that you gave the defendant fair warning and a chance to resolve the matter.

Attach a copy of the demand letter and its proof of delivery to your claim. Under Rule 7.01(2), any written document your claim is based on should be attached to Form 7A.

For the complete filing process — from the demand letter through service, default judgment, and the hearing — our Ontario Small Claims Filing Guide covers every step.

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