EFILE Helpdesk support

Contact your designated EFILE Helpdesk at the phone number indicated on your EFILE Renewal/Registration Confirmation page or as listed below, for questions regarding:

  • EFILE registration, renewal, account maintenance and/or view transmission history processes,
  • EFILE Suitability Screening and/or Monitoring programs,
  • EFILE web service questions regarding error messages for initial and/or amended T1 returns, and/or
  • Authentication problems related to EFILE numbers/passwords (for both T1 and T2 returns)

For questions regarding the Auto-fill my return and the Express NOA services or the Multi-factor authentication feature, contact the Individual income tax enquiries line.

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

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

Helpdesk information
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: 1-833-494-1381

Central Time

7:00 a.m. to 6:00 p.m.



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 and long distance calls:
Fax: 1-833-494-0790


Eastern Time

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





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: 1-833-474-0425


Eastern Time

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



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