My landlord is asking for my Social Insurance Number (SIN). Should I give it?

By: Zandile Chiwanza and Arshi Hossain on August 12, 2026

Updated by Arshi Hossain on August 12, 2026 | Originally written by Zandile Chiwanza on July 24, 2025

QUICK TAKEAWAYS:

Landlords in Ontario can ask for your Social Insurance Number (SIN), but they cannot require it as a condition of renting, and you have the right to refuse.
A SIN is not needed to run a credit check. Landlords can typically verify your credit history using your name, address, and date of birth, with your consent.
Sharing your SIN increases the risk of identity theft, which can lead to financial fraud, damaged credit, and years of recovery efforts.
If a landlord requests your SIN, ask for what purpose, intended use, who may have access to your information, and how your details will be securely stored and destroyed.
If a landlord insists on collecting your SIN without justification or mishandles your personal information, you can file a free complaint with the Office of the Privacy Commissioner of Canada.

No. An Ontario landlord can ask for your Social Insurance Number (SIN), but in most cases you do not have to provide it. According to the Office of the Privacy Commissioner of Canada, a landlord cannot require your SIN when another piece of identification can provide similar information for rental purposes, and neither is a SIN necessary for a basic credit check.

Can landlords ask for your SIN number in Ontario?

A landlord can ask for your SIN when you are filling out an application to rent a property or negotiating a lease, according to the Government of Canada. But you aren’t required to provide it.

While there is no evidence that not providing a SIN can result in rejection of a rental application, a landlord requesting SIN card information is not a legal requirement for prospective tenants.

In fact, the Office of the Privacy Commissioner of Canada’s (OPC) states that organizations that request SIN outside of a legal requirement must clearly mark it as optional.

Even the practice of asking for one’s SIN is strongly discouraged, but it’s not illegal, according to the government, due to the potential of SIN-related identity fraud. In the case of having to hand over their SIN number to a prospective landlord, individuals are advised to ask why their SIN is being requested, how it will be used, and who it might be shared with.

It’s important to remember that landlords aren’t allowed to refuse your application if you decline to provide your SIN.

“No one can force you to provide it regardless of the application source,” says Juliet Craig, manager for tenant and home staging at Rental Affiliate, and moderator of the Facebook group, Black Housing Directory (Renting While Black) Toronto.

“There are other government identifications one can present that should be more than sufficient,” she says.

What documents and personal information can a landlord ask for in Ontario?

To run a credit check, OPC says the landlord would need to ask for your name, address, and date of birth.

“A prospective landlord must have your consent to share your personal information with any third party or organization, such as a credit reporting agency,” Craig says.

Putting your SIN number on a rental application is not required because a landlord doesn’t need your SIN to run a credit check. If they demand your SIN and other personal information as a condition of renting without clear justification, you can contact an advocacy agency in your province or territory, or file a complaint with the OPC. It’s free to file a complaint.

Do landlords need your SIN for a credit check?

No. In Ontario, a landlord may ask for your SIN, but they cannot require it as a condition of renting to you. A SIN is not necessary to run a credit check in most cases. Landlords can typically obtain a credit report using information such as:

Your full name
Current and previous addresses
Date of birth
Your written consent to the credit check

If you're uncomfortable providing your SIN, you can:

Leave that field blank on the rental application
Offer alternative documentation, such as government-issued ID, proof of income, employment letters, and references

What are dangers of giving out your SIN number?

There are serious financial repercussions from identity theft via a SIN number. From filing police reports to re-establishing credit, it can take years for victims to get their finances back in order after their identity was stolen.

“The problem is a social insurance number can be compromised, and if this information were to fall into the wrong hands, it can cause enormous harm,” says Ann Cavoukian, founder and CEO of the Global Privacy & Security by Design Centre.

As Ontario’s former privacy commissioner for 17 years, Cavoukian saw a number of identity theft victims firsthand, and urges people to be very careful to whom they provide personal information.

“A SIN and a name are sufficient to perpetrate identity theft, meaning you can impersonate them, and you can rack up charges under their name,” Cavoukian says. “[A landlord] may be well-intentioned, but unless they really secure the data, it can be used by third parties in ways that were never contemplated.”

Landlords, especially new ones, might not know all the laws pertaining to inappropriate use of personal information and are just trying to do their due diligence when looking for a good tenant.

“A small measure you can take is say, ‘Look, I really want to be assured that you’re not going to use this information in any way other than to verify my identity',” she suggests.

The next step might be to ask the landlord for some assurance on how they will store your confidential information. She suggests saying: “I would like some assurance that you’re going to destroy that information and not have it remain in your database or wherever where it can be compromised and accessed by potential third parties.”

When you’re hard pressed to find a place to live, you might be more inclined to hand over whatever information a landlord requests. But it's equally important to know and uphold your rights. Don’t let a landlord overstep their boundaries, and don’t readily hand out personal information not required by law to secure your rental.

If your landlord asks you to get tenant insurance, consider comparing rates to find the cheapest premiums and ensure you're getting the best deal possible.

Learn more: What are your rights as a tenant with no lease?

Frequently asked questions (FAQ)

1. Can a landlord run a credit check without my SIN?

Yes. To accurately pull a credit report from Equifax or TransUnion, a landlord generally only needs your full legal name, current address, and date of birth. Your SIN is not required.

2. What if I'm a newcomer without Canadian credit history?

You still have rights as a newcomer to Canada. The Ontario Human Rights Commission has stated that landlords cannot equate the absence of a credit rating with a bad credit rating, and should not reject tenancy applications based on a lack of credit history. If you have no Canadian credit history, you can offer bank statements, an employment letter, or a reference from a previous landlord as alternatives.

3. How do I file a complaint if my privacy rights were violated?

If a landlord insists on your SIN, you can suggest that they contact the OPC, or you can file a complaint with the OPC yourself. Filing a complaint is free of charge. For housing discrimination specifically, you can also contact the Ontario Human Rights Commission.

4. Can I ask a landlord to delete my SIN after a rental decision is made?

Yes, and you should request your personal information to be deleted. Under Canada's Personal Information Protection and Electronic Documents Act (PIPEDA), once a landlord no longer has a reasonable need for your personal information, it should be securely destroyed and rendered non-identifying. Ask the landlord in writing to destroy your information once a rental decision has been made. If they refuse or you have concerns about how your data is being stored, you can file a complaint with the OPC.

5. What should I do if I think my SIN has been misused?

Act immediately. Inform your bank and credit card companies, ask for new account numbers, report it to your local police, and file a report with the Canadian Anti-Fraud Centre at 1-888-495-8501.

If you think your SIN specifically has been misused, notify the Canada Revenue Agency. You can also place a fraud alert on your credit file with Equifax and TransUnion, which instructs creditors to contact you before opening any new accounts in your name.