Asked to co-sign your child's or friend's lease? Here is what a guarantee really means under Ontario law.

Landlords sometimes ask a tenant to provide a guarantor (co-signer), often a parent, who promises to pay if the tenant doesn't.
A guarantor can be responsible for unpaid rent, damage and other amounts the tenant owes. Read the guarantee carefully, try to limit it to a set amount or period, and know when it ends.

Landlords can ask for a guarantor in some situations, but shouldn't require one only from people because of a protected ground, such as receiving social assistance or being a newcomer.
Ask for a written statement of what is owed and the proof. Disputes over money can go to Small Claims Court.
A guarantor usually has no right to live in the unit.
Need help with a tenancy problem? NEO helps tenants and landlords with notices, applications and hearings at the Landlord and Tenant Board. Call 647-200-3526 or toll-free 888-519-2435, email info@neolegalservices.com, or book a free consultation.
Read next: Your One-Year Lease Is Ending: Do You Have to Move Out?
General Ontario legal information, not legal advice for your matter, and reading it does not create a retainer. Sources checked 16 October 2026: check the current law, forms and dates before you act.
Photos from Unsplash: Business people signing a contract at a table · A classical-style courthouse stands under a blue sky.
This article is general information for people in Ontario, not legal advice. Rules, forms and deadlines change, and every situation is different. Check the current rule or speak to a licensed legal professional before you act.
Not sure where you stand? A licensed paralegal can look at your documents and tell you your options.
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