How can I apply for someone else (e.g. on behalf of a child or an adult)?

Important Notices:

  • There is no fee to apply for a Social Insurance Number (SIN).
  • On March 31, 2014, Service Canada began issuing SINs in paper format (confirmation of SIN letter). Production of the plastic SIN cards has stopped.
  • Original proof of identity documents are required to apply for a SIN; photocopies are not accepted.

There are specific situations where you may have to apply for a Social Insurance Number (SIN) for someone else.

Select which best describes your situation:

Parents or Legal Guardians applying on behalf of a child

Children who are 12 years of age or older may apply for their own SIN. However, parents or legal guardians can also apply on behalf of a child under the age of majority in their province. Here's what you'll need if you are applying on behalf of your child:

Within Canada

To apply for a Social Insurance Number (SIN), simply gather all the required original documents and take them to the nearest Service Canada point of service.

Requirements when applying at a Service Canada point of service:

  • your SIN. If you were not issued a SIN, you must provide your original proof of identity documents;
  • the original proof of identity documents of the person for whom you are applying;
  • Legal Guardians will need to provide an original or a certified copy of a document that confirms your legal guardianship, issued by a provincial/territorial authority (in Quebec, a notarized Will is an acceptable document).

If everything is in order, you will get your child's confirmation of SIN letter during your visit.

Special measures are in place to accommodate individuals who cannot apply in-person at a Service Canada point of service. Note: Only individuals in these circumstances are permitted to apply by mail:

  • Individuals living 100 km or more from the nearest Service Canada point of service, in an inaccessible area, or where outreach is very infrequent may apply by mail. To confirm your eligibility to apply by mail, you must verify your postal code.
  • Individuals with other extenuating limitations preventing them from visiting a Service Canada point of service and cannot use the assistance of another individual to submit an application on their behalf may be eligible to apply by mail. Note: Individuals must contact 1-800-206-7218 (select Option #3) to determine if they are eligible to apply by mail.

Requirements when deemed eligible to apply by mail:

  • a fully completed, signed and dated SIN application form;
  • your original proof of identity documents;
  • the original proof of identity documents of the person for whom you are applying;
  • Legal Guardians will need to provide an original or a certified copy of a document that confirms your legal guardianship, issued by a provincial/territorial authority (in Quebec, a notarized Will is an acceptable document).

Send your completed application and original documents to:

Service Canada
Social Insurance Registration Office
PO Box 7000
Bathurst, New Brunswick  E2A 4T1
CANADA

If you send your application by registered mail, we will return your document(s) in the same way. Service Canada is not responsible for document s lost in the mail.

If the SIN application and document(s) are in order, you will receive the child's c onfirmation of SIN letter by mail within 20 business days from the date the application is received.

Outside Canada

  • a fully completed, signed and dated SIN application form;
  • your original proof of identity documents;
  • the original documents of the person for whom you are applying;
  • Legal Guardians will need to provide an original or a certified copy of a document that confirms your legal guardianship, issued by a provincial/territorial authority or similar legislation (in Quebec, a notarized Will is an acceptable document).

Send the completed application and original documents to:

Service Canada
Social Insurance Registration Office
PO Box 7000
Bathurst, New Brunswick  E2A 4T1
CANADA

If you send your application by registered mail, we will return the documents in the same way. Service Canada is not responsible for documents lost in the mail.

If the SIN application and documents are in order, you will receive the child’s confirmation of SIN letter by mail within 20 business days from the date the application is received.

Court appointed lawyers or individuals, or provincial/territorial employees can apply on behalf of a minor child or an adult. Here's what you'll need if you are applying on behalf of a child or an adult:

Within Canada

To apply for a Social Insurance Number (SIN), simply gather all the required original documents and take them to the nearest Service Canada point of service.

Requirements when applying at a Service Canada point of service:

  • the original proof of identity documents of the person for whom you are applying;
  • valid photo identification confirming your identity. Note: Provincial/territorial employees must provide valid employee photo identification.
  • an original document or certified copy of a document that confirms your legal representation, issued by a provincial/territorial authority (in Quebec, a notarized Will is an acceptable document);
  • Provincial/territorial employees must also provide an original Letter of Authorization issued by the agency and signed by the agency’s Director/Administrator authorizing the employee to apply for a SIN on behalf of the agency; this letter must be on agency letterhead.

If everything is in order, you will get the SIN for the person for whom you are applying during your visit.

Special measures are in place to accommodate individuals who cannot apply in-person at a Service Canada point of service. Note: Only individuals in these circumstances are permitted to apply by mail:

  • Individuals living 100 km or more from the nearest Service Canada point of service, in an inaccessible area, or where outreach is very infrequent may apply by mail. To confirm your eligibility to apply by mail, you must verify your postal code.
  • Individuals with other extenuating limitations preventing them from visiting a Service Canada point of service and cannot use the assistance of another individual to submit an application on their behalf may be eligible to apply by mail. Note: Individuals must contact 1-800-206-7218 (select Option #3) to determine if they are eligible to apply by mail.

Requirements if deemed eligible to apply by mail

  • a fully completed, signed and dated SIN application form;
  • original proof of identity document(s) of the person for whom you are applying;
  • valid photo identification confirming your identity. Note: Provincial/territorial employees must provide valid employee photo identification.
  • an original document or certified copy of a document that confirms your legal representation issued by a provincial/territorial authority (in Quebec, a notarized Will is an acceptable document);
  • Provincial/territorial employees must also provide an original Letter of Authorization issued by the agency and signed by the agency’s Director/Administrator authorizing the employee to apply for a SIN on behalf of the agency; this letter must be on agency letterhead.

Send your completed application and original documents to:

Service Canada
Social Insurance Registration Office
PO Box 7000
Bathurst, New Brunswick  E2A 4T1
CANADA

If you send the application by registered mail, we will return the documents in the same way. Service Canada is not responsible for documents lost in the mail.

If the SIN application and documents are in order, you will receive the confirmation of SIN for the person for whom you are applying by mail within 20 business days from the date the application is received.

Outside Canada

  • a fully completed, signed and dated SIN application form;
  • original proof of identity documents of the person for whom you are applying;
  • valid photo identification confirming your identity. Note: Provincial/territorial employees must provide valid employee photo identification.
  • an original document or certified copy of a document that confirms your legal representation issued by a provincial/territorial authority or similar legislation (in Quebec, a notarized Will is an acceptable document);
  • Provincial/territorial employees must also provide an original Letter of Authorization issued on agency letterhead by the agency’s Director/Administrator authorizing the legal representative to represent the agency to apply for a SIN.

Send the completed application and original documents to:

Service Canada
Social Insurance Registration Office
PO Box 7000
Bathurst, New Brunswick  E2A 4T1
CANADA

If you send the application by registered mail, we will return the documents and confirmation of SIN letter in the same way. Service Canada is not responsible for document(s) lost in the mail.

If the SIN application and documents are in order, you will receive the confirmation of SIN letter for the person for whom you are applying by mail within 20 business days from the date the application is received.