EFILE Helpdesk support

For any EFILE web service questions regarding error messages and/or authentication problems for EFILE numbers/passwords (including those for T2 tax preparer for EFILE), please contact your designated EFILE Helpdesk at the phone number indicated on your EFILE Renewal/Registration Confirmation page or as listed below.

For any problems with the Auto-fill my return login process, contact the Individual income tax enquiries line.

For questions, or help filing your T2 Corporation income tax returns, please consult the Corporation Internet Filing Help Desk phone numbers and hours of service.

For all other questions please contact the applicable enquiries telephone number.

We are offering extended hours from March 11, 2019 to May 3, 2019. For details select Extended Hours of Operation from your designated EFILE Helpdesk. If your designated EFILE Helpdesk is closed, please contact an alternate EFILE Helpdesk.


EFILERS served by
tax services offices in:
Designated EFILE Helpdesk

Hours of operation

Monday to Friday


Alberta, British Columbia,

Hamilton, Kitchener/Waterloo,

London, Manitoba,

Northwest Territories, 

Regina, Saskatoon,

Thunder Bay, Windsor,

and Yukon

Winnipeg Tax Centre
Post Office Box 14000, Station Main
Winnipeg MB R3C 3M2
Local and long distance calls:
Fax: 204-984-5302

Central Time

7:15 a.m. to 6:30 p.m.

Extended Hours of Operation


Barrie, Belleville, Kingston,

Montréal, New Brunswick, 

Newfoundland and Labrador,

Nova Scotia, Nunavut,

Ottawa, Outaouais,

Peterborough, Prince Edward Island,

Sherbrooke, St. Catharines,

Toronto Centre,

Toronto East, Toronto North,

Toronto West, and


Sudbury Tax Centre
1050 Notre-Dame Avenue
Sudbury ON P3A 5C1
Local calls: 705-670-6499
Long distance calls: 1-800-361-6283
Fax: 705-670-6500 or 1-855-338-5495

Eastern Time

7:00 a.m. to 4:30 p.m.

Extended Hours of Operation



Chicoutimi, Laval,


Québec, Rimouski, Rouyn-Noranda,

and Trois-Rivières

Jonquière Tax Centre
2251 René-Lévesque Blvd
Jonquière QC G7S 5J2
Local and long distance calls:
Fax: 418-699-0203 or 1-800-497-5806

Eastern Time

8:15 a.m. to 4:30 p.m.

Extended Hours of Operation




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