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New: Email notifications for SIN updates on a business account

Beginning October 19th, the CRA will send an email notification to the email address associated with your T1 personal income tax account when your social insurance number (SIN) is added to or updated on a business account. This additional notification will help protect your personal and business account information.

Which email address will receive the notification

The notification will be sent to the email address on file in your T1 personal income tax account.

When you will receive a notification

You will receive a notification if you have an email address in your T1 personal income tax account and:

  • your SIN is added as a new owner on a business account
  • your SIN information is updated on a business account
  • your SIN is added to an existing owner record on a business account

What you need to do if you want to receive these notifications

  • Make sure you have an email address on file in your T1 personal income tax account
  • Keep your email address up to date

How to add or update your email address

  1. Sign in to your CRA account
  2. On the Welcome page, select your Individual account to access My Account
  3. From the left navigation menu, select Notification preferences under Correspondence
  4. Add or update the email address on file in your T1 personal income tax account

Why the CRA is making this change

This change helps keep you informed when your SIN is added or updated on a business account. It may also help you identify unauthorized activity involving your SIN.

What to do if you get an email about a change that you did not make

If you receive a notification about a change that you do not recognize, call the Business Tax Enquiries line at:

  • Canada/US: 1-800-959-5525
  • Yukon, Northwest Territories and Nunavut: 1-866-841-1876
  • Outside Canada/U.S. call collect: 1-613-940-8497

Page details

2026-10-15

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