Being Sued by a Debt Buyer in Ontario: Does the New Owner Have to Prove You Owe Them?

You open an envelope, or an email, and see a Statement of Claim or a Plaintiff's Claim from a company you have never dealt with directly — not the credit card issuer or phone provider you actually had an account with, but a debt buyer that says it now owns the debt. It is a common and disorienting situation, and being sued by a debt buyer in Ontario does not mean the claim is automatically valid just because it arrived with official-looking paperwork attached.

Debt buyers purchase bundles of old, often defaulted accounts from original creditors — credit card issuers, telecom companies, retail lenders — usually for a fraction of the face value, then pursue the accounts for collection or file suit directly. The company suing you may be several steps removed from whoever you actually dealt with, and sometimes the account has changed hands more than once.

Being sued by a debt buyer does not change the basic rules of civil litigation: whoever is suing you still carries the burden of proving its case. This guide walks through what a debt buyer generally has to establish, where these claims often have gaps, and what to actually do once you have been served.

What Makes a Debt Buyer's Case Different

When the original creditor sues, proving the debt is usually straightforward — it issued the account and holds the records. A debt buyer has to prove two separate things: that the underlying debt exists and is unpaid in the amount claimed, and that the debt was validly transferred (assigned) to it, so that it — rather than the original creditor — is the party entitled to sue on it.

What a Debt Buyer Generally Has to Prove

1. The underlying debt existed. Typically through account records, a signed agreement, or a statement of account from the original creditor.
2. The amount claimed is accurate. A running balance showing charges, payments, and any interest applied — not just a final figure with nothing behind it.
3. The debt was properly assigned. Documentation tracing the chain from the original creditor to whoever is now suing, which can involve more than one intermediate purchaser.
4. The claim is still within the limitation period. Buying a debt does not restart the clock; the same general limitation rules that would have applied to the original creditor still apply, subject to the usual discoverability and acknowledgment principles.

Which Court Will This Be In?

Where These Cases Often Have Gaps

• [ ] Missing or incomplete account statements — a demand for a number with no history behind it
• [ ] Unclear or missing assignment documentation, especially where the debt changed hands more than once
• [ ] A claim filed close to, at, or arguably past the limitation deadline
• [ ] Amounts that include fees, interest, or charges that are not clearly explained

None of these gaps guarantee the claim will fail, but they are exactly the kind of thing worth checking carefully rather than assuming the paperwork is airtight simply because it looks formal.

Don't Ignore It, Even If Something Looks Off

However shaky a debt buyer's file looks on first read, ignoring a properly served claim is the worst option available to you. If you do not respond within your deadline, the debt buyer can generally ask the court to note you in default and obtain a default judgment against you without a trial, based only on the unanswered claim. Undoing a default judgment afterward is far harder than filing a defence on time would have been.

What to Do If You're Served

• [ ] Note the exact date you were served and calculate your response deadline
• [ ] Confirm which court the claim was filed in and that the amount claimed matches what you believe you owe, if anything
• [ ] Request full documentation supporting the debt and the assignment, if it was not already attached to the claim
• [ ] Check whether the claim might fall outside the limitation period
• [ ] File a defence, or get advice on preparing one, before your deadline passes

Frequently asked questions