Make a non-resident GST/HST enquiry at the London-Windsor Tax Services Office

Non-Resident Registration & Security
London-Windsor Tax Services Office
Canada Revenue Agency
441 University Ave. West Suite #101
Windsor ON  N9A 5S8

Our hours of service are 8:30 a.m. – 4:30 p.m., from Monday to Friday (local time, year-round).

For Registrations and Security:

Telephone: 519-252-4705
Toll free (Canada/United States): 1-866-453-0452

We accept collect calls by automated response: 613-221-3039
Please note that you may hear a beep and experience a normal connection delay.


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