| 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 |
1-877-322-7849 |
| If you're calling from outside Canada and the United States, call us collect at | 709-772-8371 |
| TTY e-Services Helpdesk for businesses | 1-888-768-0951 |
| Time zone | Monday to Friday |
| Pacific Time | 3:45 a.m. to 8:00 p.m. |
| Mountain Time | 4:45 a.m. to 9:00 p.m. |
| Central Time | 5:45 a.m. to 10:00 p.m. |
| Eastern Time | 6:45 a.m. to 11:00 p.m. |
| Atlantic Time | 7:45 a.m. to 12:00 a.m. |
| Newfoundland and Labrador Time | 8:15 a.m. to 12:30 a.m. |
| Outside Canada and the US (Eastern Time) | 6:45 a.m. to 11:00 p.m. |
| TTY (Eastern Time) | 6:45 a.m. to 11:00 p.m. |
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