What an RST purchase exemption certificate asks for — and how to autofill 013-3479 with my-id.ca
Issue an RST purchase exemption certificate without retyping vendor details
Vendors and purchasers completing an Ontario Retail Sales Tax Purchase Exemption Certificate repeat purchaser legal name, business address, vendor permit number, and authorized contact information on every exemption package. 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: Retail sales tax — ontario.ca
- Form (Central Forms Repository): Ontario Retail Sales Tax Purchase Exemption Certificate — 013-3479
What this form is about
Form 013-3479 is the Ontario Retail Sales Tax Purchase Exemption Certificate — confirm when an exemption applies and how to retain records on ontario.ca.
Before you start: what to gather
- Purchaser legal name and business address.
- Vendor permit number and vendor business name.
- Exemption reason and purchase description.
- Authorized signatory name and contact details.
Confirm the current process on ontario.ca.
How my-id.ca makes it faster
- Save it once. Store your purchaser name, vendor details, and contact information 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 013-3479 required?
- When a qualifying purchaser claims RST exemption on a taxable purchase — confirm categories on ontario.ca.
- How does my-id.ca help?
- It autofills purchaser name, vendor details, and contact information.
- How does 013-3479 relate to RST vendor returns?
- The certificate supports exempt purchases; vendors still file RST returns as required on ontario.ca.
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.