How to Apply for a SIN
Application Methods
| Method | Processing Time | Where | Best For |
|---|---|---|---|
| In person | Immediate (same day) | Any Service Canada Centre | Fastest option; newcomers |
| Online | 5–10 business days | My Service Canada Account | Canadian-born citizens with existing MSCA account |
| By mail | 15–20 business days | Service Canada SIN Program | If you cannot visit in person |
Required Documents
| Applicant Type | Primary Document Needed |
|---|---|
| Canadian-born citizen | Birth certificate (provincial) |
| Naturalized citizen | Canadian citizenship certificate or card |
| Permanent resident | Permanent Resident Card (PR card) or Confirmation of PR |
| Temporary worker | Valid work permit + passport |
| International student | Valid study permit (with work authorization) + passport |
| Refugee/protected person | Refugee protection claimant document (IMM 1442) |
Only ONE primary document is required. It must be an original (not a photocopy).
In-Person Application: Step by Step
| Step | Action | Details |
|---|---|---|
| 1 | Find a Service Canada Centre | Use servicecanada.gc.ca to locate one near you |
| 2 | Bring your primary document | Original document (see table above) |
| 3 | Visit during business hours | Most centres: Mon–Fri, 8:30am–4:00pm |
| 4 | Complete the application | Staff will help you fill out the form |
| 5 | Receive your SIN | Issued on the spot; printed on a confirmation letter |
No appointment needed. Wait times vary — arrive early for shorter waits.
SIN Numbers Explained
| SIN Starting Digit | What It Means |
|---|---|
| 1 | Atlantic provinces (NB, NS, PE, NL) |
| 2–3 | Quebec |
| 4–5 | Ontario |
| 6 | Prairie provinces (MB, SK, AB, NT, NU) |
| 7 | Pacific (BC, YT) |
| 9 | Temporary residents (work/study permit holders) |
SINs starting with “9” expire when your permit expires. You must apply for a new SIN or update when you receive a new permit or become a permanent resident.
SIN for Newcomers to Canada
| Status | When to Apply | What You Get |
|---|---|---|
| Permanent resident | As soon as you land and have your PR card | Permanent SIN (does not expire) |
| Temporary worker | After arriving with valid work permit | Temporary SIN (starting with 9) |
| International student | After arriving with valid study permit | Temporary SIN (starting with 9) |
| Refugee claimant | After receiving IMM 1442 document | Temporary SIN (starting with 9) |
| Spouse on open work permit | After receiving open work permit | Temporary SIN (starting with 9) |
When You Need Your SIN
| Situation | Required? | Who Asks |
|---|---|---|
| Starting a new job | Yes | Employer (for payroll and tax) |
| Filing a tax return | Yes | CRA |
| Opening a bank account | Yes | Bank (for tax reporting) |
| Applying for government benefits (EI, CCB, CPP, OAS) | Yes | Service Canada / CRA |
| Opening a TFSA, RRSP, RESP | Yes | Financial institution |
| Student loan application | Yes | Provincial student aid |
| Applying for a credit card | Not always | Some issuers request it |
Protecting Your SIN
| Do | Don’t |
|---|---|
| Memorize your SIN | Don’t carry the confirmation letter in your wallet |
| Store the letter in a safe place at home | Don’t share your SIN unless legally required |
| Verify why someone is asking before providing it | Don’t give your SIN over email or text |
| Report a lost or stolen SIN to Service Canada | Don’t post your SIN online or on social media |
| Check your credit report regularly | Don’t give your SIN to a landlord (not required by law) |
What If Your SIN Is Compromised?
| Action | How |
|---|---|
| Report to Service Canada | Call 1-866-274-6627 or visit a centre |
| Report to Equifax | Call 1-800-465-7166 or online |
| Report to TransUnion | Call 1-800-663-9980 or online |
| Report to Canadian Anti-Fraud Centre | Call 1-888-495-8501 |
| Monitor your credit | Check credit reports from both bureaus |
| Consider a fraud alert | Both Equifax and TransUnion offer fraud alerts |
What to do if you lose your SIN card
Service Canada no longer issues physical SIN cards (the last ones were issued in 2014). Your SIN is now stored digitally. If you lose the confirmation letter that showed your SIN:
- Check your past tax returns (T1) — your SIN appears at the top of your federal tax return
- Check your T4 slips — your SIN is on every T4 from your employer
- Log in to CRA My Account — your SIN is visible in your profile
- Request a Confirmation of SIN — visit a Service Canada Centre with original ID
You cannot get a “replacement SIN” — your SIN is permanent and does not change.
Frequently asked questions
Can a newcomer start working before getting a SIN? In theory, you need a SIN before you start work. In practice, Service Canada allows you to apply and receive same-day confirmation in person. If you have a valid work permit or PGWP, you can apply for a SIN at any Service Canada Centre. Bring your original immigration document (not a photocopy).
What if I was assigned a SIN starting with 9? SINs beginning with 9 are issued to temporary residents (work permit holders, international students). A 9xx SIN expires on the same date as your immigration document. When you extend or renew your status, you must also renew your SIN at Service Canada.
Is it safe to give my SIN to my employer? Yes — employers are legally required to collect your SIN for payroll, T4 filing, and government remittances (CPP, EI, income tax). You should only provide your SIN to entities with a legal requirement to collect it (employers, financial institutions, CRA, CERB/EI applications). Never give your SIN to someone who contacts you unsolicited.