There are several ways to contact the Canada Revenue Agency. First, if you are registered for the CRA’s My Account platform, there are many functionalities that allow you to interact with the CRA online for tasks such as changing your address or submitting documents. Otherwise, the CRA provides several telephone numbers:
1-800-959-5525 for general business inquiries
1-800-267-2384 for general charities inquiries
1-800-959-8281 for inquiries related to individuals
1-800-665-0354 for the hearing-impaired and speech-impaired who use teletypewriters
Several other phone numbers are related to specific tax issues. If you have received a document from the CRA, there is usually a phone number indicated on it, often with a contact person and extension number.