How to complete Affidavit Form M for support proceedings — and autofill on00187 with my-id.ca

Swear additional support evidence without retyping party contact details

Applicants and respondents in support proceedings repeat legal name, address, contact information, and case references on every Affidavit – Form M filed as additional evidence to establish or vary support. This guide is an example of storing them once in my-id.ca.

Official form and source

Start from the official source and always use the current version — form numbers and links can change:

• Service page: Child and spousal support — ontario.ca
• Form (Central Forms Repository): Affidavit – Form M — on00187

What this form is about

Form on00187 is Affidavit – Form M used as additional evidence in support applications or responses, or when the court requests further information — confirm commissioning requirements on ontario.ca.

Before you start: what to gather

• Your legal name and address.
• Other party's name and known contact details.
• Case or court file reference.
• Facts and documents supporting your position — confirm on ontario.ca.

Confirm the current process on ontario.ca.

How my-id.ca makes it faster

1. Save it once. Store your name, address, and contact details in your my-id.ca profile.
2. Keep documents ready. Upload supporting documents to my-id.ca Files so you are not searching at form time.
3. Autofill the form. Use the my-id.ca Chrome extension on a web form, or fill a PDF from your saved profile inside my-id.ca.
4. Review and submit yourself through the official channel.

Why do it in my-id.ca

Related Ontario forms repeat the same personal details. Captured once in my-id.ca — stored in Canada, with AI on its own servers — every form starts mostly complete.