To sue for breach of contract in Ontario, you have to prove that a contract existed, that the other party broke it, and that you lost money as a result. Breach of contract is the most common civil dispute there is, and the one where expectations and outcomes diverge most sharply. People arrive convinced that because the other side broke their word, a court will make them whole and punish them for it. Contract law is less interested in punishment than in putting you where performance would have left you, and it is considerably more interested in proof than in fairness. Knowing what you must establish, what a court can award, and where the claim belongs will tell you whether litigation is worth it.
What You Have to Prove
Four things, in practice. That a contract existed. That it obliged the other party to do something. That they failed to do it. And that their failure caused you a loss you can quantify.
A contract does not have to be written. Oral agreements are enforceable in Ontario, and so are agreements assembled from emails, text messages, invoices and conduct. Written agreements are simply far easier to prove, which is why disputes over handshake arrangements so often turn on whose recollection a judge prefers. Certain contracts do require writing to be enforceable, including most agreements dealing with land, so the general rule has exceptions worth checking. Home renovation contracts also carry consumer protection rules of their own, covered in our guide to contractor disputes in Ontario.
The element most claims founder on is the fourth. Establishing that someone breached an agreement gets you nowhere unless you can show the loss that followed and prove the amount with evidence. Invoices, quotes for remedial work, records of lost revenue and proof of payments made are what convert a grievance into a claim.
There are also defences to anticipate: that the contract was never formed, that its terms differ from what you assert, that you breached first, that performance was excused, that the agreement is unenforceable, or that you failed to mitigate your loss.
What a Court Can Award
The ordinary remedy is damages, measured to put the innocent party in the position they would have occupied had the contract been performed. That principle disappoints people in both directions. It captures what you lost by not receiving performance, but it does not compensate for annoyance, wasted time, or the general unpleasantness of the experience, and punitive damages are exceptional in contract cases.
Two limits matter. Damages that are too remote are not recoverable: the loss must have been reasonably within the contemplation of the parties when they contracted. And you have a duty to mitigate. A party who could have reduced their loss by taking reasonable steps, and did not, cannot recover the part of the loss they could have avoided. Sitting on a problem while damage accumulates is not a strategy a court will fund.
Specific performance, an order compelling actual performance rather than payment, is available but exceptional, and is most often seen in disputes over land where damages are considered inadequate.
Written agreements frequently shape the answer before a court gets near it. Limitation of liability clauses, entire agreement clauses, notice requirements and arbitration clauses can cap what is recoverable or move the dispute out of court altogether. The contract should be read closely before anything is filed.
Where the Claim Belongs, and How Long You Have
Forum follows amount. Claims up to $50,000 belong in Small Claims Court, which is faster and cheaper but caps recoverable costs at 15 per cent of the amount claimed. Above that, the claim proceeds in the Superior Court of Justice, where the Simplified Procedure under Rule 76 of the Rules of Civil Procedure is mandatory for claims of $200,000 or less, exclusive of interest and costs, provided the claim is exclusively for money, real property or personal property. Simplified Procedure restricts discovery and shortens trials, which is the point of it.
Timing is governed by the Limitations Act, 2002. Section 4 gives you two years from the day the claim was discovered. In a contract case the discovery date is usually the breach, but not always, and section 5(2) presumes you knew on the day the act or omission occurred unless you prove otherwise. Ongoing payment obligations and demand obligations raise their own questions about when the clock starts.
What to Do About a Breach of Contract in Ontario
Read the agreement before you do anything else, including any clause requiring written notice of default or a cure period. Failing to give a notice the contract requires can undermine an otherwise sound claim.
Document the loss as it happens. Quotes, invoices, replacement costs and a clear record of what you did to limit the damage are the evidence that makes a claim provable, and they also establish that you mitigated.
Send a written demand setting out the breach, the loss, and what you want. A properly framed demand resolves a meaningful share of these disputes, and it costs very little compared with a claim. If the breach is an unpaid invoice or loan, our guide to debt recovery in Ontario covers the demand letter, default judgment and enforcement.
Weigh the commercial reality before litigating: the amount at stake, the costs you can realistically recover, the time involved, and whether the defendant can actually satisfy a judgment. A judgment against a company with no assets is an expensive piece of paper.
If you are on the receiving end, and have been served with a statement of claim alleging that you breached a contract, the deadline to respond runs from the day you were served. See what to do when you’re served with a statement of claim.
If a contract has been breached and you are deciding what to do, George Habib, civil litigation lawyer at Habib Legal Counsel, will assess the claim, the forum and the realistic outcome. Visit HabibLC.com or call anytime at 647-648-2164 — George Habib and his firm are ready to help.
George Habib | Habib Legal Counsel | Civil Litigation | 647-648-2164 | Contact us
