How to Write a Demand Letter in Canada (2026 Guide)

Before you file a lawsuit in Canada, you should almost always send a demand letter first. In some provinces and tribunals, it is actually required. Even where it is not mandatory, a well-written demand letter resolves many disputes without ever stepping foot in a courtroom.

This guide explains what a demand letter is, when you need one, what to include, and how to deliver it properly.

Important disclaimer: This article is for general informational purposes only and does not constitute legal advice. For advice specific to your situation, consult a licensed lawyer or paralegal.

What Is a Demand Letter?

A demand letter (sometimes called a "letter before action" or "letter of demand") is a formal written notice sent to a person or business who owes you money or has wronged you. It:

States the facts of the dispute
Identifies the amount owed or the action you require
Sets a deadline for payment or compliance
Warns of legal consequences if the demand is not met

A demand letter is not a legal filing — it is a private communication between parties. But it carries weight because it demonstrates that you are serious and prepared to take legal action.

When Do You Need a Demand Letter?

When It Is Required

Several Canadian courts and tribunals require a demand letter (or proof that you attempted to resolve the dispute) before you can file a claim:

BC Civil Resolution Tribunal (CRT) — the CRT's Solution Explorer process requires you to demonstrate you have attempted to contact the other party before proceeding
Ontario Small Claims Court — while not strictly mandatory, judges routinely ask whether a demand was sent and may look unfavourably on plaintiffs who did not make any effort to resolve the matter before suing
Quebec Small Claims Division — the Code of Civil Procedure emphasizes pre-litigation resolution, and a formal demand (mise en demeure) is a standard step before filing

When It Is Strongly Recommended

Even where not technically required, sending a demand letter:

Shows the court you acted reasonably
Gives the other party a chance to pay or respond without the expense of litigation
Creates a paper trail that supports your case
Often resolves the dispute entirely — many people pay once they receive a formal demand
Establishes the date from which interest may run on the amount owed

What to Include in a Demand Letter

A strong demand letter is clear, factual, and professional. Include the following:

1. Your Contact Information and the Date

Include your full name, mailing address, and the date. If you are writing on behalf of a business, include the business name and address.

2. The Recipient's Full Name and Address

Use the correct legal name of the person or business. For a corporation, use the registered name (check provincial business registries).

3. A Clear Statement of Facts

Describe what happened in chronological order. Be specific about dates, amounts, and events. Stick to verifiable facts — do not editorialize or make accusations you cannot support.

Example: "On March 15, 2025, I entered into a written agreement with you for the renovation of my kitchen at 123 Main Street, Toronto, Ontario, for a total price of $18,000. I paid a deposit of $9,000 on March 16, 2025. You commenced work on April 1, 2025, but abandoned the project on April 20, 2025, leaving the work incomplete."

4. The Amount Owed or Action Required

State precisely what you want. If it is money, specify the dollar amount and how it was calculated. If it is an action (such as completing work or returning property), describe exactly what is required.

5. A Deadline

Give the recipient a reasonable deadline to comply — typically 10 to 30 days from the date of the letter. Be specific: "within 14 days of the date of this letter" or "by April 30, 2026."

6. Consequences of Non-Compliance

State clearly that if the demand is not met, you intend to commence legal proceedings without further notice. You may also mention that you will seek interest and costs in addition to the amount claimed.

7. Supporting Documentation

If applicable, attach copies of relevant documents: contracts, invoices, receipts, photographs, or correspondence. Keep the originals.

Tone: Firm but Professional

The tone of a demand letter matters. A well-written letter is:

Direct — get to the point quickly
Factual — state what happened without emotional language
Professional — this letter may be shown to a judge. Write accordingly
Firm — make it clear you are serious about pursuing legal action if necessary

Avoid threats beyond what you are legally entitled to pursue. Do not threaten criminal charges to collect a debt — this can itself be an offence.

How to Deliver a Demand Letter

The method of delivery matters because you may need to prove the letter was sent and received.

Recommended Delivery Methods

| Method | Proof of Delivery | |--------|------------------| | Registered mail (Canada Post) | Tracking number and signature confirmation | | Courier (FedEx, Purolator, etc.) | Delivery receipt | | Email | Read receipt or delivery confirmation (weaker proof) | | Personal delivery | Have a witness present; note the date, time, and location |

Registered mail is the gold standard for demand letters in Canada. You receive a tracking number and can obtain proof of delivery from Canada Post if the letter is not claimed.

Sending by email is acceptable in many situations, particularly where the parties have been communicating by email. However, email alone may not satisfy the requirements of all courts and tribunals. When in doubt, send both a registered letter and an email.

Province-Specific Notes

Ontario

Ontario does not legally require a demand letter before filing in Small Claims Court or Superior Court, but it is strongly recommended. Judges frequently ask at settlement conferences whether a demand was sent. Not sending one can suggest you did not make reasonable efforts to resolve the dispute.

British Columbia

The BC Civil Resolution Tribunal (CRT) requires applicants to go through a "Solution Explorer" process that includes attempting to contact the other party before filing a dispute. For Provincial Court Small Claims, a demand letter is not mandatory but is standard practice.

Quebec

Quebec law places significant emphasis on pre-litigation resolution. A mise en demeure (formal demand) is a customary and often expected step before filing in the Small Claims Division of the Court of Québec. The Code of Civil Procedure (articles 1 to 7) requires parties to consider private dispute resolution before going to court.

Alberta

Alberta does not require a demand letter before filing a civil claim, but the Alberta Rules of Court and the Provincial Court Civil Division both encourage parties to attempt resolution before litigation. A demand letter is standard practice.

Other Provinces

Across Canada, while the specific legal requirements vary, sending a demand letter is considered best practice in every province and territory. It demonstrates good faith and can only help your case.

Common Mistakes

Being too vague — "You owe me money" is not a demand letter. Specify the amount, the basis for the claim, and the deadline.
Emotional or threatening language — anger is understandable but weakens your letter. Keep it professional.
No deadline — without a deadline, the recipient has no urgency to respond.
Failing to keep a copy — always keep a copy of the letter and proof of delivery.
Not sending it at all — many self-represented litigants skip straight to filing a claim. This often means lost time and money that could have been avoided with a simple letter.
Wrong recipient — sending the letter to the wrong person or business entity can render it ineffective. Verify the correct legal name.

How ProSe Can Help

ProSe helps Canadians prepare demand letters and other court-ready documents through a straightforward questionnaire. Answer plain-language questions about your situation, and ProSe generates a properly formatted document ready to send.

Start for free at BeProSe.ca — your first document costs nothing.

Key Resources

Canada Post — Registered Mail — canadapost-postescanada.ca
Ontario Small Claims Court — ontario.ca/page/small-claims-court
BC Civil Resolution Tribunal — civilresolutionbc.ca
Quebec Code of Civil Procedure — legisquebec.gouv.qc.ca
Steps to Justice (Ontario) — stepstojustice.ca

Last reviewed: April 2026. This article is for general informational purposes only and does not constitute legal advice. For advice specific to your situation, consult a licensed lawyer or paralegal.