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
185 Ouellette Avenue
Windsor ON  N9A 4H7
Our hours of service are 8:30 a.m. – 4:30 p.m., from Monday to Friday (local time, year-round).

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

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


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