×
Icon
Legal AI
Assistant

Select Your Province

Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Business & Commercial Law Ontario » Business Formation & Contracts Ontario » What to Do If a Client Refuses to Pay a Commercial Contract in Ontario?

What to Do If a Client Refuses to Pay a Commercial Contract in Ontario?

28 Jun 2026 4 min read No comments Business Formation & Contracts Ontario
💡

If a commercial client refuses to pay in Ontario, you generally have two years to take legal action. For debts up to $50,000 CAD, you can file a claim in the Small Claims Court, while larger amounts require filing in the Superior Court of Justice. Sending a formal demand letter through a local law firm is often the most effective first step.

Running a business in Ontario comes with many rewards, but dealing with unpaid invoices can quickly drain your cash flow and your patience. When a client simply ignores a commercial contract and refuses to pay, it can feel like you are out of options. However, Ontario law provides clear pathways for businesses to recover what they are owed. Whether your company is located in Toronto, Mississauga, or Ottawa, knowing how to enforce your contract is essential for your survival.

Ignoring the problem will not make the debt disappear, and waiting too long can actually strip away your legal rights. 🕐 Under the provincial Limitations Act, you generally only have two years from the date the invoice became overdue to start a lawsuit. Before writing off a significant loss, it is highly recommended to explore the formal debt recovery process. Finding a skilled commercial lawyer from our directory can help you navigate these waters safely and effectively.

Step-by-Step Process in Ontario

Recovering a commercial debt requires a strategic approach. Rushing straight to a judge is rarely the best first move. Here is the standard, step-by-step process that most businesses follow when trying to collect an unpaid commercial contract in Ontario.

Step 1: Review the Contract and Follow Up

Before taking legal action, closely review your signed contract or purchase order. 🔍 Check the payment terms, late fee clauses, and any specific dispute resolution requirements, such as mandatory mediation. Sometimes, a simple polite reminder or a final phone call can clear up an administrative error on the client’s end.

Step 2: Send a Formal Demand Letter

If informal reminders fail, the next step is usually having a law firm draft a formal demand letter. This letter outlines exactly how much is owed, the specific contract breached, and a strict deadline for payment (often 10 to 14 days). In many cases, receiving a letter on official legal letterhead is enough to convince a stubborn client to pay their bill.

Step 3: Choose the Right Court Venue

If the demand letter is ignored, you must decide where to file your lawsuit. 💰 In Ontario, if the debt is $50,000 CAD or less, you file a Plaintiff’s Claim in the Small Claims Court (a branch of the Superior Court). If the unpaid amount is greater than $50,000 CAD, your lawyer must file a Statement of Claim in the main Superior Court of Justice.

Step 4: File the Claim and Serve the Defendant

Once you file the appropriate paperwork and pay the government filing fee, you must officially deliver the documents to the client. This is known as serving the defendant. The client will then have a set number of days (usually 20 days if served in Ontario) to file a defence. If they fail to respond, you may be able to obtain a default judgment against them.

How Much Does it Cost in Ontario?

The cost of pursuing an unpaid contract depends entirely on the size of the debt and the court you choose. 💵 Here is a general breakdown of typical costs in Ontario:

  • Small Claims Court Filing: Under O. Reg. 332/16, it currently costs $108 CAD to file a Plaintiff’s Claim, and a fee of $308 CAD (for infrequent claimants) or $403 CAD (for frequent claimants) if you need to request a trial date.
  • Superior Court Filing: Issuing a Statement of Claim in the Superior Court of Justice costs exactly $243 CAD under O. Reg. 293/92, with additional fees for motions and setting down for trial.
  • Demand Letter: Having a lawyer review your contract and send a customized demand letter usually ranges from $300 to $700 CAD.
  • Law Firm Fees: For larger debts, commercial lawyers typically charge hourly rates between $300 and $700+ CAD. Some may take debt collection cases on a contingency basis, retaining 20% to 35% of the recovered funds.

How Long Does the Process Take?

Patience is required when collecting a commercial debt through the legal system. A strongly worded demand letter can sometimes secure payment within 2 to 4 weeks. If you need to proceed to the Small Claims Court, obtaining a judgment can take anywhere from 9 to 18 months due to scheduling backlogs. For complex cases in the Superior Court of Justice, the entire litigation process can easily stretch to 2 to 3 years before a trial occurs.

Recovery MethodJurisdiction / VenueEstimated Timeline
Demand LetterOut-of-court settlement2 – 4 Weeks
Lawsuit (Under $50,000)Ontario Small Claims Court9 – 18 Months
Lawsuit (Over $50,000)Superior Court of Justice2 – 3+ Years

Frequently Asked Questions (FAQ)

Is there a time limit to sue for an unpaid invoice?

Yes. Under the Ontario Limitations Act, you generally have exactly two years from the date the invoice became overdue (or the date the client last acknowledged the debt) to commence a lawsuit. If you wait longer, your claim will likely be dismissed.

Can I claim interest on the unpaid amount?

Yes, if your commercial contract clearly states a specific interest rate for late payments, you can claim that amount. If your contract is silent on the matter, you may still be entitled to claim pre-judgment interest according to the Courts of Justice Act.

What happens if I win but they still refuse to pay?

Winning a court judgment is only half the battle. If the client ignores the judge’s order, you will need to enforce the judgment. This can involve garnishing the business bank accounts or seizing and selling their commercial assets through the local enforcement office.

Can I sue the business owner personally?

Generally, no. If the client operates as an incorporated entity (a corporation), the business is a separate legal person. You can only sue the corporation itself, unless the owner signed a personal guarantee holding them personally liable for the corporate debt.

lawyerinfo.ca

⚖️ Lawyers to Help You in Ontario

⭐ Get Featured

🏛️ Relevant Courts & Agencies in Ontario

Share:

Leave a Reply

Your email address will not be published. Required fields are marked *