Filing

If you are a resident of Canada, you can mail your return to:

Sudbury Tax Centre
1050 Notre Dame Avenue
Sudbury ON  P3A 5C2

If you are a non-resident, you can find the address (or fax number) to send it to here: https://www.canada.ca/en/revenue-agency/corporate/contact-information/where-mail-your-paper-t1-retur...