Can I ask for a new Social Insurance Number if I have lost my SIN card or it has been stolen?

Service Canada Centre will not issue a new Social Insurance Number (SIN) if you have lost your SIN card or it has been stolen. If you would like to replace your SIN card, consult our Web section on how to replace my lost/stolen card?

A new SIN may be issued only in situations where there is proof that the SIN is being used fraudulently. If, in the future, another person uses your SIN for employment purposes or to receive other taxable income, you will receive a Notice of Reassessment from the Canada Revenue Agency concerning undeclared earnings. This is an indication that your SIN is being used fraudulently.

If you suspect someone is using your SIN, consult our Web section for more information on how to deal with SIN fraud.