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e-Services Helpdesk for businesses To get help using My Business Account, GST/HST NETFILE, GST/HST TELEFILE, Filing Information Returns Electronically, Represent a client, or Payroll Deductions Online Calculator (Calls from anywhere in Canada and the United States)	1-877-322-7849
If you're calling from outside Canada and the United States, call us collect at	613-940-8528
*TTY e-Services* Helpdesk for businesses** (Calls from anywhere in Canada and the United States)	1-888-768-0951

Time zone	Monday to Friday
Pacific Time	4:30 a.m. to 6:00 p.m
Mountain Time	5:30 a.m. to 7:00 p.m.
Central Time	6:30 a.m. to 8:00 p.m.
Eastern Time	7:30 a.m. to 9:00 p.m.
Atlantic Time	8:30 a.m. to 10:00 p.m.
Newfoundland and Labrador Time	9:00 a.m. to 10:30 p.m.
Outside Canada and the US (Eastern Time)	7:30 a.m. to 9:00 p.m.
TTY (Eastern Time)	7:30 a.m. to 9:00 p.m.

The e-Services Helpdesk for business is not available on weekends and statutory or civic holidays.
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