| Detail | Information |
|---|---|
| Jurisdiction | Canada — common law provinces and Quebec (Civil Code) |
| Governing legislation | Provincial contract law (common law); Civil Code of Quebec (art. 1385–1707); Consumer Protection Act, 2002 (Ontario); Electronic Commerce Act (Ontario) |
| Limitation periods | 2 years (most provinces); 3 years (Quebec) |
| Audience | Small business owners, tenants, employees, consumers, self-represented parties |
| Last updated | June 2026 |
A contract does not need to be a 40-page document drafted by a lawyer. A text message agreeing to pay $500 for a used car can be a binding contract. So can a verbal agreement to renovate a kitchen. What matters is whether the agreement meets the legal requirements — and whether you can prove it if the other side disputes it.
What Makes a Contract Valid in Canada
Six elements must be present for a contract to be legally enforceable in common law provinces. Quebec uses a similar but distinct framework under the Civil Code of Quebec.
| Element | What It Means | Example |
|---|---|---|
| Offer | One party proposes specific terms | "I will paint your fence for $800" |
| Acceptance | The other party agrees to those exact terms, without changing them | "Yes, agreed" — a counteroffer kills the original offer |
| Consideration | Something of value exchanged by each party | Money, services, a promise to do or not do something |
| Capacity | Both parties are legally able to contract | Adults of sound mind; corporations acting through authorized officers |
| Legality | The contract's purpose must be lawful | A contract to commit fraud is void from the start |
| Intention | Both parties intend to create legal obligations | Business agreements are presumed to have this; social arrangements are not |
Consideration is the element that causes the most confusion. A promise to give a gift — "I'll give you $1,000 next month" — is not a contract because nothing is exchanged. The recipient gives nothing in return. If the promisor changes their mind, the recipient has no legal claim.
Capacity matters in specific situations. Minors (under 18 or 19, depending on province) can void most contracts they enter into. A person who was intoxicated or mentally incapacitated when signing may be able to void the contract if the other party knew of the incapacity at the time.
Quebec distinction: Under the Civil Code of Quebec (art. 1385), a contract requires consent, capacity, a cause (similar to consideration), and an object. The terminology differs from common law, but the practical requirements are close enough that the same questions apply: Did both parties agree? Did each give something? Were they able to contract?
Types of Contracts Recognized in Canadian Law
| Type | Description | Key Limitation |
|---|---|---|
| Written contract | Terms set out in a signed document | Courts look at the written words; prior verbal promises generally don't count |
| Verbal (oral) contract | Agreement made by spoken words | Valid but hard to prove; disputes come down to credibility |
| Implied contract | Arises from conduct, not explicit words | Courts infer terms from the parties' behaviour |
| Standard form contract | Pre-drafted by one party (insurance policy, software terms, lease) | Valid, but courts may strike unconscionable terms |
| Electronic contract | Formed online or via email, text, or click-through | Valid under provincial Electronic Commerce Acts |
Some contracts must be in writing to be enforceable. In Ontario, the Statute of Frauds requires written form for: contracts for the sale of land, contracts that cannot be performed within one year, and guarantees (promises to pay another person's debt). A verbal agreement to sell a house is not enforceable in Ontario, regardless of how clear the agreement was.
Key Contract Terms Defined
| Term | Plain-Language Definition |
|---|---|
| Offer | A proposal with specific terms, capable of acceptance |
| Counteroffer | A response that changes the original terms — this rejects the original offer and creates a new one |
| Consideration | The value each party gives to make the contract binding |
| Breach | Failing to perform a contractual obligation without legal excuse |
| Damages | Money paid to compensate the non-breaching party for their loss |
| Specific performance | Court order requiring the breaching party to do what they promised |
| Rescission | Cancelling the contract and restoring both parties to their original position |
| Indemnity | One party's obligation to cover the other's losses in specified circumstances |
| Warranty | A promise about the quality or condition of something |
| Liquidated damages | A pre-agreed amount payable if a specific breach occurs |
| Force majeure | A clause excusing performance due to extraordinary events beyond a party's control |
| Entire agreement clause | States the written contract is the complete agreement; prior discussions don't count |
| Severability clause | If one part of the contract is unenforceable, the rest remains valid |
| Governing law clause | Specifies which province's law applies to disputes |
| Arbitration clause | Requires disputes to be resolved through arbitration, not court |
| Quantum meruit | Payment for work done even without a complete contract, where one party has benefited |
Breach of Contract: Material vs. Minor
Not every failure to perform is treated the same way. The distinction between material and minor breach determines what the non-breaching party can do.
Material breach goes to the root of the contract — it defeats the purpose of the agreement. When a material breach occurs, the non-breaching party can treat the contract as ended and sue for all losses flowing from the breach.
Minor (partial) breach is a failure to perform some term that does not destroy the contract's purpose. The non-breaching party must continue performing their own obligations but can sue for the specific loss caused by the minor breach.
Concrete example: A contractor agrees to renovate a kitchen for $30,000, completing by June 1. If the contractor abandons the job halfway through, that is a material breach — the homeowner can hire someone else and sue for the cost difference. If the contractor finishes two weeks late but the work is done properly, that is likely a minor breach — the homeowner can claim damages for the delay (storage costs, temporary accommodation) but cannot refuse to pay the full contract price.
Anticipatory breach occurs when one party clearly signals, before the performance date, that they will not perform. The other party does not have to wait — they can treat the contract as ended immediately and sue without waiting for the breach to actually happen.
Remedies for Breach of Contract
| Remedy | What It Does | When Courts Grant It |
|---|---|---|
| General damages | Compensates for losses that flow naturally from the breach | Standard remedy; available for most breaches |
| Special (consequential) damages | Compensates for specific losses the breaching party knew were possible | Must be foreseeable at the time of contracting |
| Punitive damages | Punishes particularly egregious conduct | Rare in contract cases; courts reserve this for conduct that is independently actionable as a tort |
| Specific performance | Orders the breaching party to perform | Usually only for unique goods or land; courts will not order it for personal services |
| Injunction | Orders a party to stop doing something | Used to enforce non-compete or confidentiality obligations |
| Rescission | Cancels the contract | Available for misrepresentation, duress, undue influence |
| Quantum meruit | Payment for work done even without a complete contract | When one party has partially performed and the other has received a benefit |
Duty to mitigate: The non-breaching party must take reasonable steps to reduce their losses. A landlord whose tenant breaks a lease cannot leave the unit empty and sue for all remaining rent — they must make reasonable efforts to re-rent the unit. Failure to mitigate reduces the damages recoverable, sometimes significantly.
Limitation Periods for Contract Claims by Province
Missing the limitation period means losing the right to sue, regardless of how strong the claim is. The clock generally starts when the claimant knew — or ought to have known — that a breach occurred.
| Province | Limitation Period | Legislation |
|---|---|---|
| Ontario | 2 years from discovery | Limitations Act, 2002 |
| British Columbia | 2 years from discovery | Limitation Act |
| Alberta | 2 years from discovery | Limitations Act |
| Quebec | 3 years | Civil Code of Quebec, art. 2925 |
| Nova Scotia | 2 years | Limitation of Actions Act |
| Manitoba | 2 years | Limitations of Actions Act |
| Saskatchewan | 2 years | Limitations Act |
In a construction dispute where defects are hidden inside walls, the limitation period may not start until the defects are discovered — not when the work was completed. This "discoverability" principle can extend the window significantly, but it is not unlimited: most provinces also have an ultimate limitation period of 15 years from the date the act or omission occurred.
Clauses That Appear in Most Canadian Contracts
These clauses are called "boilerplate" — they appear in almost every commercial contract. They are not meaningless filler.
Entire agreement clause prevents either party from relying on promises made during negotiations that were not written into the final contract. If a salesperson verbally promised a feature that is not in the signed agreement, this clause may prevent you from claiming that promise was part of the deal. Read the written contract carefully before signing — what is not in it generally does not exist.
Force majeure — Canadian courts interpret these clauses narrowly. During COVID-19 litigation, courts generally held that force majeure clauses did not excuse performance unless the clause specifically mentioned pandemics or government-ordered closures. A general reference to "acts of God" was often insufficient. If you are negotiating a contract, list specific events explicitly rather than relying on broad language.
Governing law clause determines which province's courts and laws apply to any dispute. In a contract between an Ontario business and a BC supplier, this clause determines whether an Ontario or BC court hears the case. This matters because limitation periods, consumer protection rules, and court procedures differ by province.
Arbitration clause requires disputes to go to private arbitration rather than court. Arbitration is generally faster and confidential, but the arbitrator's decision is usually final with limited appeal rights. In consumer contracts, mandatory arbitration clauses that prevent class actions have been challenged under provincial consumer protection legislation — Ontario courts have struck down some of these clauses.
Indemnity clause — one party agrees to cover the other's losses in specified circumstances. Courts scrutinize indemnity clauses carefully. They must be clear and unambiguous to be enforced. An indemnity clause that purports to cover a party's own negligence will only be enforced if the language is explicit.
Liquidated damages clause sets a pre-agreed amount payable if a specific breach occurs — for example, $500 per day for late delivery. Courts enforce these clauses if the amount is a genuine pre-estimate of loss, not a penalty. If the amount is grossly disproportionate to the actual loss, a court may refuse to enforce it.
Non-Compete and Non-Solicitation Clauses
Non-compete clauses restrict an employee or contractor from working for competitors after the relationship ends. Canadian courts apply strict scrutiny — most non-competes drafted for employees are unenforceable as written.
Ontario ban on employee non-competes: Under the Working for Workers Act, 2021 (in force October 25, 2021), non-compete agreements are void and unenforceable for most Ontario employees. The only exceptions are for executives (C-suite level) and in the context of the sale of a business, where the seller agrees not to compete with the buyer.
Non-solicitation clauses — which restrict a departing employee from poaching clients or colleagues — remain enforceable in Ontario and other provinces, provided they are reasonable in scope, duration, and geographic area. A clause restricting solicitation of clients the employee actually worked with, for 12 months, in a defined territory, is more likely to be enforced than a blanket restriction.
Common law test (other provinces): A non-compete clause must be reasonable to be enforceable. Courts consider: Is the restriction necessary to protect a legitimate business interest? Is the geographic scope reasonable? Is the time period reasonable? A clause restricting a junior salesperson from working anywhere in Canada for five years will almost certainly be struck down.
Electronic Contracts and Digital Signatures in Canada
Electronic contracts are valid across Canada under provincial Electronic Commerce Acts, modelled on the Uniform Electronic Commerce Act. An email exchange, a click-through agreement, or a DocuSign signature can all form a binding contract.
Key rules:
- An electronic signature satisfies any legal requirement for a signature, unless the law specifically requires a wet (handwritten) signature
- Contracts for the sale of land, wills, and powers of attorney generally still require wet signatures in most provinces
- The Electronic Commerce Act (Ontario) and equivalent provincial legislation confirm that contracts are not invalid simply because they were formed electronically
Timing of acceptance in electronic contracting: Acceptance occurs when the acceptance is received by the offeror's system — not when the offeror reads it. This matters for determining when a contract was formed and which province's law applies.
Consumer Contracts and Cooling-Off Rights
Consumer protection legislation gives individuals rights that cannot be waived by contract. These rights apply even if the contract says otherwise.
| Province | Cooling-Off Period | Applies To |
|---|---|---|
| Ontario | 10 days | Direct sales agreements, internet agreements over $50, time-share agreements |
| British Columbia | 10 days | Direct sales, future performance contracts |
| Alberta | 10 days | Direct sales contracts |
| Quebec | 10 days | Itinerant merchant contracts, distance contracts |
Ontario Consumer Protection Act, 2002: Internet agreements over $50 must include specific disclosure requirements. If a supplier fails to provide required disclosure, the consumer can cancel the contract within one year of signing. Unfair practices — misleading representations, unconscionable conduct — can make a contract voidable at the consumer's option.
Unconscionable contracts: Courts can set aside a contract — or a specific clause — if it is grossly unfair and one party had significantly less bargaining power. The test is not simply that the deal was bad; it requires both an inequality of bargaining power and terms that are improvident or oppressive. A payday loan contract charging 400% annual interest to a borrower with no alternatives has been challenged on this basis.