Serving Documents in Ontario Small Claims Court: Rules and Methods

You filed your Plaintiff's Claim. The court stamped it and handed it back. Now comes the step most self-represented claimants underestimate: getting that claim into the defendant's hands properly. Serving documents in Ontario Small Claims Court is not optional ceremony — it is a legal requirement that determines whether the court can make a binding order at all.

This guide walks through every recognized method of service, who can serve, how to prove it, and what to do when you cannot find the person you are suing.

Why Proper Service Matters

Ontario Small Claims Court (as of writing, the limit is $35,000) operates under the Rules of the Small Claims Court. Those rules set out exactly how documents must be delivered to the other side. If service is defective:

• The defendant can argue the court has no jurisdiction over them.
• Any default judgment you obtained may be set aside.
• The hearing may be adjourned, costing you time and money.
• In a worst case, your claim could be dismissed.

Proper service is not just procedural housekeeping — it protects your right to a judgment that will actually hold up.

Who Can Serve Documents

A party to the lawsuit cannot serve their own documents. The person who serves must be an adult (18 or older) who is not a party to the action. That can be:

• A friend or family member who is not named in the claim
• A process server (a professional you hire)
• A licensed paralegal or law clerk acting on your behalf

The server does not need to be a lawyer or have any special certification — they simply need to be an adult non-party who can swear an affidavit about what they did.

Methods of Service: An Overview

The Rules of the Small Claims Court recognize several methods. Which methods are available depends on what you are serving (the Plaintiff's Claim itself vs. later documents) and who you are serving (an individual vs. a corporation).

Service Methods at a Glance

Personal Service

Personal service means handing the document directly to the defendant. For individuals, this is the gold standard — it is nearly impossible to challenge.

How it works:

1. Your server locates the defendant.
2. The server hands the documents to the defendant personally.
3. If the defendant refuses to take them, leaving the documents in their presence (e.g., on the table in front of them) and identifying what the documents are is generally sufficient.

The defendant does not have to accept, sign, or agree to anything. The act of bringing the documents to their presence is what counts.

Leaving Documents with an Adult at the Defendant's Residence

If you cannot reach the defendant personally, you may leave the documents with an adult (18+) who appears to live at the same address, and mail a copy of the documents to that address on the same day or the next day.

Practical note: The adult does not have to be a spouse or family member — a roommate qualifies. Your server should note the approximate age and describe the person in the affidavit. Service is deemed effective on the fifth day after mailing.

Registered Mail or Courier

You may serve an individual by sending the documents by registered mail or by a courier that requires the recipient to sign for delivery. Keep the Canada Post tracking confirmation or the courier's delivery receipt — you will need it.

Service by registered mail is deemed effective on the fifth day after the date of mailing, even if the envelope comes back unclaimed. This deemed-service rule has real consequences: if you mail on June 1, service is deemed to have occurred June 6 whether or not the defendant actually picked up the envelope.

Serving a Corporation

A corporation cannot receive documents the way a person can. The Rules recognize the following methods:

• Registered mail or courier to the corporation's last known address or its registered office on file with the province
• Leaving a copy at the corporation's registered office with an officer, director, or someone who appears to be in charge
• Leaving a copy at the place of business with someone who appears to be in management, combined with mailing a copy

You can look up a corporation's registered office address through the Ontario Business Registry (Ontario corporations) or Corporations Canada (federal corporations). Use the address on record — do not assume the mailing address on an invoice is the registered office.

Service by Email

Email service is permitted only if the person to be served has expressly consented in writing to receive service by email. A general email address on a website does not constitute consent. You need something in writing — a signed agreement, an email where they explicitly say they accept service at a specific address, or a court order permitting it.

If you have consent, keep the email and any delivery or read receipt as part of your proof of service.

Filing the Affidavit of Service

After serving, your server must complete and sign an Affidavit of Service (Small Claims Court Form 8A). The affidavit records:

• Who served the documents
• What was served
• When, where, and how service was carried out
• For substituted service, details of the steps taken

The completed affidavit must be filed with the court before the date of the hearing or settlement conference. Without a filed affidavit, the court cannot confirm that the defendant was properly notified, and a hearing may not proceed.

File the affidavit in person at the Small Claims Court office or, where the court permits, electronically. Keep a copy for your records.

What Happens When You Cannot Find the Defendant

Sometimes a defendant has moved, is avoiding service, or cannot be located at a known address. In that case, you can bring a motion for substituted service.

Substituted service is a court order permitting you to serve the defendant by an alternative method — for example, by email to an address you know they use, by posting at a last known address, by serving a close relative, or by social media in some circumstances.

To obtain the order you must show the court:

1. The steps you have already taken to locate and serve the defendant (an affidavit of attempts)
2. Why those steps have not succeeded
3. The alternative method you propose and why it is reasonably likely to bring the documents to the defendant's attention

If the court grants the motion, follow the order exactly. Deviation from the approved method may render service defective.

Timeframe to note: As of writing, the basic limitation period in Ontario is two years from when you discovered the claim. If locating the defendant is taking time, keep your eye on whether your claim remains within the limitation period while you pursue service.

Common Mistakes and How to Avoid Them

Serving yourself. You are a party — you cannot serve your own documents. Ask someone else.

Using email without consent. Emailing documents without prior written agreement is not valid service, no matter how reliable email seems.

Not mailing a follow-up copy. When you leave documents with an adult at the address, the mailing step is mandatory. Skipping it makes service defective.

Forgetting to file the Affidavit of Service. Serving documents and filing proof of service are two separate steps. One does not automatically follow the other.

Relying on deemed service without checking timelines. If you mail documents and service is deemed on day five, make sure you account for that when calculating response deadlines.

Using an old address for a corporation. Always verify the registered office address through the official registry before serving a corporation.

Frequently asked questions