How To get your SIN 🇨🇦 🍁 A Social Insurance Number (SIN) is a 9-digit number that you need to work and be paid in Canada, and file taxes. 🇨🇦 There are 2 easy ways to apply for your SIN number. 1. You can also apply in person. be sure to set aside the whole day, as it may take you longer. But you will get your SIN the same day. 2. You can apply online. It takes less than 30 min to apply and after a week, you will get your SIN by mail. What documents you will need: 1. Primary identity documen