What is Social Insurance Number (SIN) — Canada?
Meaning, Full Form & Guide (2026)
Quick Definition
A Social Insurance Number (SIN) is the 9-digit Canadian government number required to work in Canada or access government benefits. International students with a valid Study Permit permitting work can obtain a SIN. Apply at Service Canada with your Study Permit (must show work authorisation). Essential for any paid work, internship, or co-op in Canada.
Social Insurance Number (SIN) — Canada — Full Explanation
Apply in-person at a Service Canada centre — processing is typically same-day. Documents needed: valid Study Permit (confirming work authorisation), passport, and proof of Canadian address. Your SIN is confidential — protect it from identity theft. Students with SINs starting with '9' have a temporary SIN — it expires with your Study Permit. Renew when your permit is renewed.
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