Disruption of Canada Post services – strike paused
Canada Post operations have resumed. Tentative agreements have been reached, and Canada Post and its union have agreed not to engage in any strike or lockout activity until the ratification process is complete. Consult the measures in place during a disruption of Canada Post services.
Social Insurance Number
To work in Canada or access government programs and benefits, you need a 9-digit identifier known as Social Insurance Number (SIN). Your SIN is private and it is illegal for anyone else to use it.
You are responsible for protecting your SIN.
Find your SIN
Sign in to My Service Canada Account (MSCA) or create an account to view and print your SIN
If you don't remember your SIN, check:
- income tax return
- tax slip (for example, T4)
- Record of Employment
- Registered Retirement Saving Plan (RRSP) contribution receipt
Plastic SIN cards
Service Canada no longer issues plastic cards. Plastic SIN cards can still be used. If you lost your card or if it is damaged, you can request a Confirmation of SIN and you will receive a letter in paper or digital format.
To begin your application, choose your current status in Canada
Temporary residents
Your SIN starts with "9" and expires with your immigration documents.
Apply for a SIN if you:
- have work or study permit that authorized you to work and need your first SIN
- need to extend your SIN because it is about to expire or has already expired
- need to request a confirmation of your existing SIN
Canadian citizens and permanent residents
Your SIN is permanent and does not expire.
Apply for a SIN if you:
- do not have one yet and are applying for the first time
- need a confirmation of an existing SIN for you or your child
- are registering a newborn in a Territory or outside of Canada
Outside Canada and don’t have legal status
If you are eligible to get benefits or pension you can submit an application.
Other related services
Explore more services and resources related to your SIN.
View and print your SIN online
Register or sign in to My Service Canada Account (MSCA).
Update your SIN record
Changes or correct personal information, legal name change, and status in Canada.
Lost or damaged SIN
What to do if your SIN or child’s is missing, or if you find another person’s SIN.
Fraud, misuse or identity theft
What to do if your SIN has been used fraudulently or exposed in a data breach.
Protect your SIN
Sharing your SIN, tips to prevent identity theft, and key information for employees.
Report a death
Notify the SIN program if the death occurs in a Territory or outside Canada.
Contact us
Confirming an employee’s SIN
Employers can confirm an employee’s SIN, find details, by visiting the Contact page.