What is my SIN number used for?

Your SIN number in your addy account is necessary for tax filing purposes.

Submitting your SIN number to addy will allow tax documents to be filed correctly, and they will show up directly in your CRA account after they are submitted (within 2-4 weeks). 

Your SIN number is encrypted and stored securely, it will never be shared with anyone and is only used for generating tax documents. For more information, read our privacy policy.