When you file court documents in Ontario, you usually need to serve a copy of those documents to the other party. But how do you prove you did it properly?

You file Form 6B – Affidavit of Service, which tells the court who served the documents, when and how they were served, and to whom.

This guide explains how to complete and file Form 6B, including common mistakes to avoid.

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Form 6B – Affidavit of Service is a sworn court form used to prove that:

• You served legal documents (such as Form 8A, 14, 8B, or 9C)
• You followed the correct method (in person, email, registered mail)
• You served the right person
• Service happened by the required deadline

🔗 Download Form 6B (PDF)

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Without proof of service:

• Your court case may not move forward
• A judge may reject your motion
• The other party could claim they were never notified

Form 6B keeps the process fair and accountable, especially in family law or protection cases.

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• Anyone who served the documents (must be over 18 and not a party in the case)
• Common servers include: legal assistants, friends, relatives, or professional process servers

The form must be signed in front of a commissioner for oaths or notary public.

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1. Download Form 6B: Form 6B – Affidavit of Service (PDF)
2. Include the following details:
   • Your name and contact info (as the server)
   • What documents you served
   • Who you served (full legal name)
   • How and when you served them (method + date + time)
   • Address or method of delivery (e.g., home address, email)
3. Sign in front of a commissioner or notary
4. File it with the same court as your primary filing (e.g., Form 8A, 9C, or 14)

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• ✅ Use Form 6B to prove you properly served legal documents
• ✅ Server must be 18+ and not a party in the case
• ✅ Include exact time, place, and method of delivery
• ✅ Sign the form in front of a commissioner or notary
• ✅ File Form 6B with the court before your hearing or deadline

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• Serving a restraining order application (Form 9C)
• Serving a motion to vary (Form 8B)
• Serving an affidavit or notice of motion (Form 14A or 14)

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• Legal Aid Ontario – 1-800-668-8258
• Court Clerk’s Office – They often have commissioners on-site
• Community Legal Clinics – Can help verify proper service

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