How to Write a Promissory Note in Canada: Required Elements and Common Pitfalls

Write a promissory note in Canada with a signed, unconditional promise to pay a set sum, plus parties, date and terms. Omit any element and disputes follow.

By Promissory.ca Editorial Team Reviewed against official Canadian sources Last updated: 2026-09-16

What a promissory note is — and what it is not

A promissory note is a written, signed, unconditional promise by one person or company (the maker) to pay a sum certain in money to another (the payee). In Canada, Part IV of the federal Bills of Exchange Act sets out the form these instruments must take, and a note that meets those requirements becomes a negotiable instrument that can, in principle, be transferred to a third party.

It is not a full loan agreement, and it is not self-enforcing. A note is strong evidence that a debt exists, but its strength depends on how carefully it was drafted and signed. Most disputes over private loans turn on wording rather than goodwill.

Required elements of a promissory note in Canada

Provincial contract law and the federal Act interact here, but the core checklist is consistent: an unconditional promise, identified parties, a fixed sum, and a signature.

The promise must be unconditional

“I promise to pay” is the operative language. Words that attach conditions — “if my business succeeds”, “provided the buyer pays me”, “subject to a final settlement” — can pull the document away from the legal definition of a promissory note. The timing of payment can be fixed or determined by a formula, but the obligation itself should not hang on an uncertain event.

Sum certain, currency and parties

The principal must be a definite sum in a named currency. In a cross-border loan, saying only “dollars” invites an argument about which dollars. Use the legal names of the maker and the payee as they appear on identification, not nicknames or trade names.

Signature, date and place

The maker must sign; a typed name is not a signature. Include the date of signing and the place, since that helps identify which provincial rules apply. Where two people borrow together, decide whether they are jointly liable or jointly and severally liable — the second lets the payee pursue either borrower for the full amount.

Interest and the annual rate statement

If interest is charged, state the annual rate explicitly. Section 4 of the Interest Act provides that where a mortgage or agreement for sale provides for interest but does not state an annual rate, interest is not chargeable above 5% per annum. The practical lesson for any note is the same: an unstated rate is a rate you cannot rely on. Charges must also stay below the criminal rate of interest ceiling of 35% APR under section 347 of the Criminal Code, reduced from 48%.

Repayment, default and acceleration

• How much is due and when: a single payment, scheduled instalments, or payment on demand.
• Where payment is to be made and by what method.
• What counts as default, and whether the full balance then becomes immediately due.
• Whether early repayment is permitted without penalty.
• Whether the note is secured, by what collateral, and how that security is registered.

Common mistakes when writing a promissory note

Signing a template without editing it

Templates carry placeholders: rate, maturity date, governing province. A note signed with an empty interest field is ambiguous, and boilerplate borrowed from another province can confuse which rules apply. Strike out what does not apply instead of leaving blanks.

Attaching conditions to a promise

If money is repayable only when something else happens — a property sale, a contract award, a tax refund — the arrangement is better documented as a loan agreement, or as a note supported by a separate agreement. Bolting conditions onto the note itself undermines its central feature.

Omitting the annual rate, or exceeding the legal ceiling

An unstated annual rate is the most common drafting gap. Equally, charges that exceed the criminal rate ceiling, including fees that function as interest, can taint the entire arrangement. The ceiling applies to the total cost of credit, not only to the stated rate.

No default or acceleration clause

Without one, the payee must fall back on general law to sue for a debt that has become due. A short clause making the balance payable on default saves time and argument.

Blurring personal and corporate borrowing

If a company borrows, the company is the maker and an authorized officer signs in that capacity. If the payee also wants a personal guarantee, that is a separate promise from a separate person and should be documented separately.

Leaving security unregistered

An unsecured note makes the payee a general creditor, ranking behind secured creditors if the borrower becomes insolvent. Where security is intended, the note is not enough on its own; the security interest must be documented and, in most provinces, registered in the appropriate personal property registry.

Overlooking privacy obligations

Collecting a borrower's identification, income details or credit report in the course of commercial activity brings the note holder within PIPEDA. Keep collection limited to what is needed, store it securely, and do not share it casually. Credit bureau inquiries also differ in effect: a soft inquiry does not affect a credit score, while a hard inquiry may.

High-cost credit and the ceiling that always applies

Some short-term lending is regulated separately from ordinary notes. In provinces that permit payday lending, the cost is capped at $14 per $100 borrowed, the maximum loan is $1,500, and the fee for a dishonoured payment is capped at $20. Quebec does not permit payday lending, and the maximum rate of credit there is 35% per year. None of this creates a loophole: a private note that charges beyond the criminal rate ceiling is exposed to section 347 of the Criminal Code regardless of how it is labelled.

Provincial differences, including Quebec

Quebec operates under civil law, and the Civil Code of Québec governs obligations there. Rules on negotiable instruments, disclosure and enforcement differ in detail from the common law provinces. If either party is in Quebec, or the loan relates to property there, have the wording reviewed locally before signing.

A short checklist before signing

1. Confirm both parties' full legal names and state the amount in words and figures.
2. State the annual interest rate, or state plainly that the loan is interest-free.
3. Set out the repayment schedule and the maturity date.
4. Include default and acceleration language.
5. Decide whether a co-signer or guarantor is needed, and document that promise separately.
6. Document and register any security.
7. Date and sign, and keep a copy for each party.

For more background, see our guides on what a promissory note is in Canada and how a promissory note compares with a loan agreement. If you want to check whether a repayment schedule is realistic before you commit, a loan payment calculator can help. promissory.ca is an information and comparison site: we do not lend money, and nothing here is legal, tax or financial advice.