Apply for a Social Insurance Number (SIN)
The 9-digit number you need to work and access government programs; apply online, by mail or at Service Canada.
Cost: Free
What you need
- Primary document: birth certificate or citizenship certificate, PR card or COPR, or a work or study permit allowing work
- Secondary ID if you are an adult (passport, provincial ID or driver's licence)
- Form NAS2120 if applying by mail
- Name-change documents if your name differs
Step by step
- Scan or photograph your documents clearly
- Apply online (fastest), by mail, or at a Service Canada Centre
- Upload the digital copies and submit
- Receive your SIN (in person, you may get it during the visit)
Where to apply
Service Canada: apply for a SIN · canada.ca
The app helps with
Tips to get it right the first time
- All documents must be in English or French.
- Online applications are processed faster.
- Newborns in Ontario can get it through the newborn bundle.
Save the checklist in the app and tick items off as you gather them.
Reviewed on October 19, 2026 · source: canada.ca. Requirements and costs are for reference and may change without notice: confirm them with the official source before you go. We are not affiliated with any institution.