- A demand letter is not legally required before most Small Claims Court cases — but it is strongly recommended.
- A clear, professional demand letter resolves a surprising number of disputes without ever reaching a courtroom.
- A demand letter creates a paper trail showing you acted reasonably — something judges notice if the matter does proceed to court.
- In a small number of specific situations — such as certain claims against a municipality — advance written notice is a genuine statutory requirement, not just good practice.
- A demand letter should include the facts, the amount owed, the deadline, and the consequence of non-payment (a lawsuit), without exaggeration or threats beyond what you actually intend to do.
- Always send a demand letter using a method that lets you prove delivery — this matters both for resolving the dispute and, if needed, as evidence later.
The Short Answer
In most Ontario Small Claims Court disputes, a demand letter is not a legal requirement — you can file a claim without ever having sent one. That said, it is one of the most effective, lowest-cost steps you can take before suing, and in a small number of specific situations, advance written notice is a genuine legal requirement, not just good practice.
What Is a Demand Letter?
A demand letter is a written communication, sent before a lawsuit, formally setting out what happened, what you believe you are owed, and a deadline for the other side to respond or pay before you take further action. It is a signal — a serious, specific one — that you are prepared to escalate if the matter is not resolved.
Why Send One, Even If It's Not Required
- It resolves disputes without court. Many people and businesses pay once they understand you are genuinely prepared to sue.
- It creates a paper trail. A dated, specific letter documents your version of events and your attempt to resolve things reasonably.
- It reflects well on you if the case proceeds. Judges notice — and generally appreciate — parties who tried to resolve a dispute before escalating to litigation.
- It forces precision. Writing the letter requires you to clearly articulate the facts and calculate exactly what you are owed.
A freelance designer sends a client a demand letter for $4,800 in unpaid invoices, giving 14 days to respond. The client, now aware legal action is imminent, arranges payment within the week — avoiding a filing fee, months of delay, and the uncertainty of a hearing entirely.
What to Include
- What happened — a clear, factual account, without exaggeration
- The amount owed and how you calculated it
- Why the recipient is responsible for the amount
- A specific deadline to respond or pay
- A clear statement that legal action will follow if the deadline passes without resolution
Avoid exaggerated claims, emotional language, or threats you do not actually intend to follow through on. A demand letter can become evidence later — it should be accurate and consistent with the case you would actually bring to court.
Calculating What to Demand
A vague or inflated number undermines your credibility from the first sentence. Calculate the exact principal amount owed, and where applicable, any interest that has accrued.
Use our free Ontario Small Claims Court Calculator to work out the precise total — including interest — before you send your letter. A specific, well-supported number signals that you have done your homework and are serious.
How to Send It
Use a method that lets you prove the letter was sent and, ideally, received — registered mail, courier with tracking, or email, ideally with some confirmation it was read or opened. Sending it through more than one channel adds an extra layer of proof if the matter later proceeds to court.
What Happens If They Don't Respond?
If your deadline passes with no response or payment, you are free to proceed with filing a claim. Keep a copy of the letter along with your proof of delivery — this becomes useful supporting evidence showing you gave the other side a genuine, fair opportunity to resolve the matter before escalating.
What If They Respond With an Offer?
Evaluate any response honestly against the strength of your claim and the realistic cost, time, and uncertainty of pursuing litigation instead. A prompt, reasonable partial settlement often beats a larger but uncertain result achieved only after months of proceedings.
When Notice Is Actually a Legal Requirement
While a demand letter is not generally required, advance written notice is a genuine legal requirement in certain specific situations. One well-known example:
Under section 44(10) of the Municipal Act, 2001, a person injured due to disrepair of a municipal road or sidewalk generally must give written notice to the municipal clerk within 10 days of the incident, or risk being barred from suing entirely — subject to a narrow exception where there is a reasonable excuse for the delay and the municipality is not prejudiced.
Other specific claim types may carry their own statutory notice requirements. Always check whether one applies to your situation before assuming a demand letter is purely optional.
Common Mistakes
Empty threats undermine your credibility and can be used against you if the matter proceeds to court.
A specific, well-calculated number is far more persuasive — and more credible — than a round, unsupported figure.
Without proof the letter was sent or received, you lose valuable evidence if the dispute later goes to court.
For claims with a genuine legal notice requirement — like certain municipal claims — missing the deadline can bar your case entirely, regardless of the underlying merits.
Need help drafting a demand letter, or unsure whether a specific notice requirement applies to your situation? Call our Toronto litigation lawyers at 416-274-2222 for a free consultation.
Frequently Asked Questions
In most cases, no. Ontario law does not generally require a demand letter before filing a Small Claims Court claim. That said, it is strongly recommended, since it often resolves the dispute without court, creates useful evidence, and can reflect well on you if the matter does proceed to a hearing.
Often, yes. Many people or businesses pay once they realize a dispute is serious enough that the other side is prepared to go to court. A clear, professional demand letter signals exactly that, and resolves a meaningful share of disputes without the time and cost of litigation.
A strong demand letter clearly explains what happened, the amount owed and how it was calculated, why the recipient is responsible, and a specific, reasonable deadline to respond or pay — along with a clear statement that legal action will follow if the deadline passes without resolution.
There is no fixed legal requirement, but 10 to 14 days is common and generally seen as reasonable, giving the recipient a genuine opportunity to respond without dragging the process out unnecessarily.
Use a method that lets you prove delivery — registered mail, courier with tracking, or email with read receipts or a clear paper trail of the communication. Sending it more than one way can help ensure it is actually received and provides stronger evidence later if needed.
If the deadline passes with no response or payment, you can proceed with filing a claim. Keep a copy of the letter and proof it was sent and received (or delivery attempted) — this becomes useful evidence showing you gave the other side a fair opportunity to resolve the matter before suing.
Yes, potentially. Avoid exaggerating the facts, threatening consequences you do not actually intend to pursue, or using inflammatory language. A demand letter can be used as evidence later, so it should be accurate, professional, and consistent with the case you would actually present in court.
Yes, in specific circumstances. One well-known example: certain claims against a municipality for injuries related to roads or sidewalks generally require written notice to the municipal clerk within 10 days of the incident under the Municipal Act, 2001, or the claim may be barred — subject to a limited exception where there is a reasonable excuse and no resulting prejudice. Always check whether a specific notice requirement applies to your situation.
A template can be a helpful starting point, but every situation is different, and a generic template may miss details specific to your claim or use language that does not fit your facts. For anything beyond a very simple, low-value dispute, having a lawyer review or draft the letter is worth considering.
Evaluate it honestly against the strength of your claim, the cost and time of pursuing litigation, and the likelihood of actually collecting a larger amount even if you win in court. A reasonable partial settlement received quickly is often a better outcome than a larger, uncertain result down the road.
Writing the letter is a good forcing function to calculate your claim precisely, including any applicable interest — an inflated or vague number weakens the letter's credibility. Use our free Small Claims Court Calculator to work out your total claim before you send it.