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Find a Lawyer » Canada Legal Guides » Money, Taxes & IP Canada » Limitation Period for Collecting Unpaid Commercial Invoices in Canada

Limitation Period for Collecting Unpaid Commercial Invoices in Canada

2 Jul 2026 4 min read No comments Money, Taxes & IP Canada
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In most Canadian provinces, you only have a strict 2-year window to file a legal claim for an unpaid commercial invoice. If you miss this limitation period, the debt becomes legally unenforceable in court. Filing a Statement of Claim typically carries a court fee of $100 to $400 CAD depending on the amount owed.

Cash flow is the absolute lifeblood of any business, but dealing with clients who refuse to pay their B2B invoices is an unfortunate reality of commerce. When polite reminders and phone calls fail, many Canadian business owners assume they can simply take the debtor to court whenever they finally have the time. This is a massive, costly legal misconception.

Every province in Canada has a Limitations Act that strictly governs how long you have to sue someone for a breach of contract or unpaid debt. ⚠ In general, the basic limitation period is two years. This legal clock starts ticking the moment the invoice becomes officially past due. If you wait two years and one day to file your paperwork at the courthouse, your legal right to collect that money is permanently extinguished, no matter how much evidence you have that they owe you.

Step-by-Step Process in Canada

Whether you are pursuing a debt in Toronto through the Superior Court of Justice or in Calgary at the Court of King’s Bench, acting swiftly is critical. Most successful companies eventually hire a local law firm to handle the escalation, as formal legal action is the only surefire way to compel a stubborn corporate debtor to pay.

Step 1: Internal Collections and Final Demand

Before the two-year clock runs out, your internal accounts receivable team should exhaust basic collection efforts. 📞 If 60 to 90 days have passed, it is time to escalate. A formal demand letter drafted by a lawyer carries significantly more weight than a standard email and often prompts immediate payment without needing to file a lawsuit.

Step 2: Determining the Exact Limitation Date

You must accurately calculate your drop-dead legal date. The limitation period generally begins on the day the default occurred. For example, if you issue an invoice with “Net 30” terms on January 1, the payment is due on January 31. If they fail to pay, your two-year limitation clock starts on February 1. You must file a lawsuit before February 1 two years later.

Step 3: Filing a Statement of Claim

If the debtor ignores the demand letter, your lawyer will draft a formal Statement of Claim. 📄 For smaller debts (ranging from under $15,000 up to $100,000, depending on the province), you will file in Small Claims Court. For larger commercial debts, the claim must be filed in the higher provincial court, such as the Superior Court of Justice in Ontario.

Step 4: Obtaining a Judgment and Enforcing It

Once you win your case, the court issues a Judgment. However, the court does not collect the money for you. Your legal team must enforce the judgment by garnishing the debtor’s corporate bank accounts, seizing their business assets, or placing a legal writ against their commercial real estate.

How Much Does it Cost in Canada?

Pursuing legal action for an unpaid invoice involves balancing the cost of litigation against the size of the debt. Here are the typical expenses you can expect in Canadian dollars:

  • Lawyer Demand Letter: Having a law firm draft and send a formal legal demand letter generally costs between $150 and $400 CAD.
  • Small Claims Filing Fees: Submitting a claim in Small Claims Court usually costs between $100 and $250 CAD in government filing fees.
  • Superior Court Fees: For larger debts requiring formal litigation, the basic court filing fee is roughly $220 to $400 CAD, plus heavy ongoing legal costs.
  • Litigation Retainers: If the debtor fights the lawsuit, hiring a commercial litigator will require an initial retainer of $5,000 to $10,000 CAD, billed at hourly rates of $300 to $600 CAD.
Court LevelMaximum Claim LimitTypical Use Case
Small Claims Court$15,000 to $100,000 CAD (Varies by province)Routine unpaid supplier invoices. Limits vary wildly: $15,000 in QC, $35,000 in BC, $50,000 in ON and SK, and $100,000 in AB.
Superior Court (King’s Bench)UnlimitedMassive corporate defaults, complex construction liens, high-value B2B disputes.

How Long Does the Process Take?

While you only have 2 years to *start* the lawsuit, the actual collection process timeline varies wildly. 🕑 If the debtor receives a formal demand letter, you might be paid in 7 to 14 days. However, if a Statement of Claim is filed and the debtor files a Statement of Defence to drag it out, proceeding through examinations for discovery and reaching a trial can easily take 12 to 24 months in the Canadian court system.

Frequently Asked Questions (FAQ)

Can the 2-year limitation period be restarted?

Yes! Under most provincial laws, if the debtor makes a partial payment or explicitly acknowledges the debt in writing (like sending an email saying ‘I will pay you next month’), the 2-year limitation clock restarts from the date of that acknowledgment.

Should I use a collection agency or a law firm?

Collection agencies charge a large percentage of the recovered funds (often 20-40%) and generally only make phone calls. A law firm charges hourly or flat fees but has the actual legal power to file a lawsuit and freeze the debtor’s bank accounts.

What happens if the company goes bankrupt?

If the debtor corporation formally files for bankruptcy or insolvency, an automatic legal stay of proceedings is triggered. You cannot sue them, and you become an unsecured creditor, meaning you will likely only recover pennies on the dollar, if anything at all.

Can I charge them interest on the unpaid invoice?

You can only enforce high interest penalties if those specific terms were explicitly stated in your original signed contract or standard terms of service. If not, the court will generally only award a modest statutory prejudgment interest rate established by the province.

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