A demand letter is a formal written communication sent to a person or business who owes you money (or who has otherwise breached a legal obligation), demanding payment or other remedy by a specific deadline, and warning of legal action if they fail to comply. In Canada, demand letters serve multiple practical and legal purposes — they signal seriousness, provide a clear record, and can trigger important legal timelines. This guide explains how to write an effective demand letter for Canadian debt recovery situations.

Purpose and Effect of a Demand Letter

Sending a demand letter accomplishes several things before litigation begins:

The Limitations Act Clock: A Critical Consideration

Before sending — or while drafting — your demand letter, you must be aware of the applicable limitation period. In most provinces, the general limitation period for civil claims (including debt recovery) is two years from the date the claim was "discovered" (i.e., when you knew or ought to have known you had a claim).

Importantly, a demand letter by itself does not extend or restart the limitation period in most provinces — what matters is when you file a court claim. However, in some circumstances an acknowledgment of the debt in writing by the debtor (which a properly worded demand letter may elicit) can restart the limitation clock under s.13 of Ontario's Limitations Act. If your claim is close to the limitation deadline, do not delay — file a court claim immediately to preserve your rights, and continue settlement discussions while the claim is pending.

Limitation Awareness: A demand letter that states "we reserve all our legal rights" is not enough to protect you from the limitation period. If you are within a few months of the 2-year limitation, file your court claim first and then send the demand letter. You can always discontinue the claim if payment is received.

What to Include in a Canadian Demand Letter

An effective demand letter should contain the following elements:

  1. Identification of the parties: Full legal names and addresses of the creditor and debtor.
  2. Date: The date the letter is sent (important for calculating deadlines and limitation period awareness).
  3. Statement of facts: A clear, concise chronological summary of the relevant facts — when the debt arose, what services or goods were provided, any prior invoices or payment demands, and the debtor's response (or lack thereof).
  4. The specific demand: The exact amount demanded, broken down if applicable (principal, interest, any contractually agreed penalties or collection costs). State the legal basis for the claim (e.g., breach of contract, unpaid invoice, personal loan).
  5. Deadline to respond: A reasonable but firm deadline — typically 10 to 15 business days. Excessively short deadlines (e.g., 24 hours) may undermine your credibility; excessively long deadlines reduce urgency.
  6. Consequences of non-compliance: State clearly that failure to pay by the deadline will result in legal action without further notice, including filing a claim in Small Claims Court or Superior Court and seeking costs. Do not threaten consequences you cannot or will not actually pursue.
  7. Payment instructions: How to pay — bank transfer, certified cheque, online payment. Make it easy for the debtor to pay.
  8. Reservation of rights: A standard clause reserving all legal rights including the right to claim prejudgment interest and costs.

Tone: Firm but Professional

The tone of a demand letter should be firm, professional, and fact-based — not emotional, insulting, or threatening beyond what is legally warranted. Avoid:

A letter that reads as reasonable and business-like will be taken more seriously than one that appears angry or desperate. Courts also view demand letters as evidence of the parties' conduct — you want yours to reflect well on you.

Debt Collection Rules by Province

If you use a collection agency (rather than pursuing the debt yourself), provincial debt collection legislation applies. Key rules include:

Self-help collection (you pursuing the debt yourself, not a registered agency) is generally not covered by collection agency legislation — but you are still prohibited from harassment and threats under the criminal law.

Never Threaten Criminal Prosecution to Collect a Civil Debt: Threatening to report the debtor to police or suggesting criminal charges will follow if they do not pay constitutes extortion under the Criminal Code of Canada — even if the debtor did commit fraud. If you believe a crime has been committed, report it to police separately. Do not mix criminal threats with civil debt collection demands.

Delivery: How to Send the Letter

For a demand letter to be effective, you need evidence that it was received. Recommended delivery methods:

Sending by multiple methods (e.g., email and registered mail simultaneously) is a common and effective practice that makes it very difficult for the debtor to later claim they never received the letter.

When to Escalate to Small Claims Court

If the deadline in the demand letter passes without payment or a credible response, the next step is litigation. In Canada, Small Claims Court is the most cost-effective option for claims up to:

For claims above the Small Claims limit, the Superior Court is the appropriate venue, though the cost of litigation increases substantially. Before filing, assess whether the debtor has assets to satisfy a judgment — a judgment against an insolvent debtor has limited practical value.