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Can My Landlord Ask for My Social Insurance Number in Ontario?

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OHI | Can My Landlord? · Ontario rental question #32

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Last verified: September 15, 2026

Quick answer: A landlord may ask, but a rental applicant is not generally required by tenancy law to provide a Social Insurance Number (SIN). A SIN is highly sensitive and is usually unnecessary for identity verification. Refusing to provide it does not prevent a landlord from using other lawful screening information.

Rental screening must comply with the Ontario Human Rights Code and applicable privacy obligations. The Office of the Privacy Commissioner of Canada advises organizations to limit SIN collection because the SIN is designed for specific income-reporting purposes and can create identity-theft risks.

A credit check should be based on informed consent. Applicants can ask why information is needed, how it will be protected, who will receive it and when it will be destroyed.

Is a SIN required for a credit check?

Credit bureaus can often locate a file using name, date of birth and address history. A SIN can improve matching accuracy, but that does not automatically make it necessary or mandatory.

Can refusing a SIN lead to rejection?

A landlord may assess an incomplete application using lawful, consistent criteria, but should not represent the SIN as legally required. Human-rights protections continue to apply to screening decisions.

How should sensitive information be handled?

Landlords should collect the minimum necessary information, secure it, restrict access and dispose of it safely when no longer needed.

What should a tenant do?

  • Ask whether a credit check can be completed without a SIN.
  • Verify the landlord or property manager before sharing sensitive documents.
  • Redact unnecessary identifiers and use secure delivery methods.
  • Keep the consent language and privacy explanation provided with the application.

What should a landlord do?

  • Collect only information reasonably needed for a lawful screening purpose.
  • Explain the purpose, consent, storage and retention practices.
  • Use consistent criteria that comply with human-rights law.
  • Avoid keeping copies of unnecessary identity documents or SIN information.

Example

An applicant provides consent for a credit check using their name, birth date and address history. The landlord completes screening without collecting the SIN. That is a lower-risk approach than treating a SIN as mandatory.

Related OHI guides and tools

Official sources

  • Office of the Privacy Commissioner of Canada: Social Insurance Numbers

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    General information only: This article discusses Ontario residential tenancies and is not legal advice. Some rentals are exempt from all or part of the RTA. Outcomes depend on the facts and evidence. Rules and forms can change; verify current information with Tribunals Ontario or obtain advice from a licensed Ontario legal professional.

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