Key takeaways
- A SIN is free. Never pay anyone to get one
- Apply in person at Service Canada, online, or by mail
- Bring your passport and your status document, such as your COPR, PR card or permit
- Temporary residents get a SIN starting with 9 that expires with their permit
- Only share it with employers, your bank and government
What a SIN is
A Social Insurance Number (SIN) is a nine-digit number you need to work in Canada and to access government programs and benefits. Your employer needs it to pay you, and the Canada Revenue Agency uses it for your taxes and benefits.
Employees generally have to give their SIN to a new employer within three days of starting work, so get it before you start your first job.
Who can apply
Canadian citizens, permanent residents and temporary residents who are allowed to work or study in Canada can apply. As a newcomer, you can apply as soon as you arrive.
Three ways to apply
- In person at a Service Canada office. The most common option for newcomers. If your documents are in order, you often leave with your number the same day.
- Online. Upload photos of your documents. You’ll also need proof of your Canadian address, and your number is mailed or given by phone.
- By mail. The slowest option, and you send documents by post.
What to bring
- A primary document proving your status: your Confirmation of Permanent Residence or PR card, or your work or study permit
- Your passport
- A supporting document if the name on your primary document is different, such as a marriage certificate
- Proof of address if you apply online
Tip: Bring originals, not photocopies, to an in-person appointment. Documents in languages other than English or French need a certified translation.
If you’re a temporary resident
Workers and students get a SIN that starts with 9. It has an expiry date that matches your permit. When you get a new permit or become a permanent resident, update your SIN record so it doesn’t expire.
Protect your SIN
Canada no longer issues plastic SIN cards, so your number comes on a confirmation letter. Keep it somewhere safe and don’t carry it in your wallet.
- Give it to your employer, your bank (for accounts that earn interest) and government agencies
- You don’t need to give it to landlords, stores or phone companies. Ask why they need it and offer another ID
- Ignore calls or messages saying your SIN is “suspended”. That’s a common scam
General information. Check current requirements with Service Canada before you go.
