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Technical Support – Businesses

Before calling us, make sure your computer meets the system requirements for using our website and online services.

By telephone
Québec City:
418 659-2281
514 873-3474
Elsewhere in Canada or the United States:
1 866 423-3234 (toll-free)

Technical support hours

Monday to Friday:
8:30 a.m. to 4:30 p.m.

See the list of holidays to find out when our client services are closed.

By secure email

If you are asking a question by secure email, make sure to give a phone number where we can reach you because we will answer by phone and not by email. When we call, you will need certain confidential documents (such as the business's last notice of assessment or consumption tax return) to confirm your identity. Also, to view or make changes in the business's file, you need to be an authorized representative or have a valid power of attorney.

Write to us by secure email

Automatic telex system (ATS) for the hearing impaired

Automatic telex system (ATS)

514 873-4455
Elsewhere in Canada or the United States:
1 800 361-3795 (toll-free)
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One mission. Concrete actions.

Read all about how we work to support and inform you. Our vision and values guide us as we carry out our role.

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