How to vary an ISO support order (Form A.2) — and autofill on00173 with my-id.ca
Apply to vary an interjurisdictional support order without retyping your details
Applicants repeat legal name, address, contact information, existing order particulars, and the other party's last-known details on every Support Variation Application under the ISO Act (Form A.2). 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: Paying and receiving child and spousal support — ontario.ca
- Form (Central Forms Repository): Support Variation Application under the Interjurisdictional Support Orders (ISO) Act – Form A.2 — on00173
What this form is about
Form on00173 is the Support Variation Application under the Interjurisdictional Support Orders (ISO) Act (Form A.2) — confirm filing routes on ontario.ca.
Before you start: what to gather
- Your legal name and contact details.
- The other party's name and last-known address.
- Existing order details and what changed.
- Children's names and dates of birth if applicable.
Confirm the current process on ontario.ca.
How my-id.ca makes it faster
- Save it once. Store your name, address, and contact details in your my-id.ca profile.
- Keep documents ready. Upload supporting documents to my-id.ca Files so you are not searching at form time.
- 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.
- 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.
Frequently asked questions
- When is Form A.2 used?
- When seeking to change an existing support order under the Interjurisdictional Support Orders Act — confirm on ontario.ca.
- How does my-id.ca help?
- It autofills name, address, and contact details.
- How does on00173 relate to on00172?
- on00172 is Form A.1 for a new ISO application; on00173 varies an existing order — confirm which applies.
Fill it once. Reuse it everywhere.
Save your information in my-id.ca once, then autofill this form and the next one — web forms with the Chrome extension, PDFs right in the app. Your data is stored in Canada and AI runs on my-id.ca's own servers, never sent to third-party AI providers.