Social Insurance Number (SIN)

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The Social Insurance Number (SIN) is a nine-digit number used in the administration of various Canadian government programs. You will require a SIN to work in Canada or to receive government benefits.

How to apply...

for a first time Social Insurance Number
for a Social Insurance Number using Newborn Registration Service (Ontario only)
to request a replacement card
to make an amendment to your SIN (record and/or card)
to make an amendment to an expiry date on the SIN card
by telephone (New Brunswick only)

Proof-of-Identity Requirements
Each time you apply for a Social Insurance Number card, you must provide a primary document and a supporting document if the name you are now using is different than the name appearing on your primary document.

Select the category that best describes your status in Canada:

Canadian citizen born in Canada
Canadian citizen born outside Canada
Status Indian born in Canada
Status Indian born outside Canada
Permanent resident
Temporary residents

Lost or stolen card
If your Social Insurance Number card has been lost or stolen, a replacement card or a new Social Insurance Number may be requested.

Forms and Publications related to the Social Insurance Number (SIN)

Other Services Offered

About our Program
Information concerning our history, statistics and surveys.

Should you not find the information you need on this Web site, you are invited to contact us directly for personal assistance.