Update your CRA information: Change your phone number

Having an up to date telephone number with the CRA is important since it may be needed for multi‑factor authentication (MFA) or when the CRA needs to contact you by phone. For information about when the CRA may contact you by phone and how to recognize a scam, visit Scam prevention and the CRA.

Ways to change your phone number


My Account can help you quickly and easily manage your tax affairs online, including changing account information such as your phone number.

You can manage the telephone numbers that the CRA will use if you need to be contacted or for multi-factor authentication by selecting “Profile” and then “edit” under contact information in My Account.

If you are unable to sign in to your account, call the CRA to get access.

Alternative: MyCRA web app

By phone:
Change your telephone number by phone
Before you call

To verify your identity, you will need:

  • your social insurance number (SIN)
  • your full name and date of birth
  • your complete address
  • an assessed return, notice of assessment or reassessment, other tax document, or be signed in to My Account

If you are calling the CRA on behalf of someone else, you must be a legal representative.

Telephone number


Yukon, Northwest Territories and Nunavut: 1-866-426-1527 (toll-free)

Outside Canada and the United States: 1-613-940-8495 (collect)

The CRA only accepts collect calls made through a telephone operator. After your call is accepted by an automated response, you may hear a beep and notice a normal connection delay. This service operates in Eastern Standard Time.

Table 1
Day Hours
Monday to Friday
8 am to 8 pm
Saturday 9 am to 5 pm
Sunday Closed

Closed on public holidays

Page details

Date modified: