How to Get Your SIN Number in Canada

What Is a SIN Number and Why Do You Need It?

A Social Insurance Number (SIN) is a 9-digit number issued by Service Canada. It is your unique identifier for all employment, taxation, and government benefit purposes in Canada. Think of it like India's Aadhar number, the UK's National Insurance number, or the US Social Security Number.

Without a SIN, you cannot legally work in Canada, file a tax return, or access most government benefits. You should apply for your SIN within the first week of arriving in Canada.

Important: Applying for a SIN is free. Never pay anyone to help you get a SIN — this is a scam.

🇨🇦 Banking While You Wait for Your SIN

KOHO lets you open an account and get a Visa card without a SIN number. No Canadian credit history required. Free to use.

Open KOHO Free — Code 45ET55JSYA

Who Is Eligible for a SIN?

You can apply for a SIN if you are:

A Canadian citizen
A permanent resident (PR) of Canada
A temporary resident with authorization to work in Canada (work permit)
An international student with a co-op or on-campus work authorization
A refugee claimant with work authorization

Visitor visa holders who are NOT authorized to work will receive a temporary SIN starting with the digit "9". This SIN expires when your status expires and must be renewed.

Documents Required to Apply for a SIN

For Permanent Residents

Confirmation of Permanent Residence (COPR) — OR
Permanent Resident card — OR
Record of Landing (IMM 1000) for older applications
Identity document (passport preferred)

For Workers (Work Permit Holders)

Valid work permit (IMM 1442)
Passport

For International Students

Valid study permit
Letter from educational institution confirming co-op or work authorization
Passport

How to Apply for a SIN: Step-by-Step

Option 1: In-Person at Service Canada (Fastest — Same Day)

Find your nearest Service Canada Centre at canada.ca/service-canada
Go early — bring all original documents (no photocopies)
Take a number and wait for an agent
The process takes about 15–30 minutes
Your SIN is given to you verbally or on a paper slip (no physical card issued anymore)

Option 2: Online Application (for New Immigrants Since 2018)

Visit canada.ca/sin
Select "Apply online"
Upload required documents
Receive your SIN by mail or email within 10–20 business days

Option 3: Mail Application

Send certified copies of your documents by mail to a Service Canada processing centre. This is the slowest option (4–8 weeks) and not recommended for newcomers who need to start work quickly.

What to Do With Your SIN

Give it to your employer — required for payroll and tax deductions
Give it to your bank — for T5 tax slips on interest earned
Use it for RRSP/TFSA accounts — you need a SIN to open registered investment accounts
File your taxes — required on every Canadian tax return
Apply for government benefits — EI, CPP, OAS, GST/HST credits all require a SIN

Protect your SIN: Never share your SIN unless required by an employer, bank, or government agency. SIN theft is a common form of identity fraud in Canada. Do not carry your SIN confirmation letter in your wallet.

SIN Starting With "9" — Temporary SINs Explained

Temporary foreign workers, international students, and some visa holders receive a SIN starting with "9". This SIN has an expiry date matching the expiry of your work or study permit.

When your status is renewed or you become a PR, you must apply for a new SIN. Your old SIN starting with 9 becomes inactive, and a new permanent SIN is issued.

Frequently Asked Questions

How fast can I get my SIN? +

In-person at Service Canada: same day. Online: 10–20 business days. Many newcomers visit a Service Canada centre on their first or second day in Canada to get their SIN immediately.

Can I work in Canada before I have my SIN? +

Technically no, but in practice employers may allow you to start work while your SIN application is pending if you can prove you have applied. Provide your employer with proof of application and give them your SIN as soon as you receive it.

Is the SIN the same as a SIN card? +

Canada stopped issuing physical SIN cards in 2014. Today your SIN is issued on paper or digitally. Keep it in a secure location — you don't need to show it often, just remember the 9-digit number.

What if I lose my SIN? +

Your SIN is permanent (unless it starts with 9). You cannot change it. If you lose your SIN confirmation letter, you can request a new one from Service Canada in person with ID. They will not issue a new number, just confirm the existing one.

🇨🇦 Best Bank for Newcomers to Canada

KOHO accepts newcomers with no credit history required. Get a free Visa prepaid card, earn cash back, and start building your Canadian credit profile. No monthly fees.