https://tribunalsontario.ca/documents/ltb/Brochures/How a Tenant Can End Their Tenancy (EN).html
Ending a tenancy early: Assigning your tenancy
You can ask the landlord to let you transfer your tenancy to another person. This is called an
assignment.
When you assign your unit, you are leaving your unit permanently.
Assignment is not a sublet
An assignment is different from a
sublet. Subletting a unit means that the tenant moves out of the unit for a period of time but plans to move back in before the tenancy ends. The person who moves in is known as a subtenant. The subtenant pays the rent to the original tenant who then pays it to the landlord.
In an
assignment, the person moves into your unit takes over your agreement. That person is called the assignee. Everything that is included in your tenancy is the same for the assignee. They are responsible for paying the landlord the same rent as you pay and they should have the same things included in their tenancy as you do. For example, if hydro, a parking spot, and the laundry room are included for you, they must be included for the assignee.
You must get your landlord's approval for an assignment. It is best to get it in writing. The landlord can refuse to allow you to assign the tenancy.
If the landlord refuses to let you assign
If the landlord refuses to let you assign the rental unit, or does not reply within seven days of your request to assign, you can end your tenancy early by giving your landlord a
Tenant's Notice to Terminate the Tenancy (Form N9).
You must give the landlord this notice no more than 30 days after you made your request. You must give your landlord at least 30 days' notice. If you have a daily or weekly tenancy, you must give the landlord at least 28 days' notice.
If the landlord agrees to let you assign
If the landlord agrees to allow you to assign the rental unit, you can try to find a person to rent the unit and ask the landlord to accept this person. The landlord has the right to refuse to let this person become a new tenant, but cannot refuse arbitrarily or unreasonably.
A landlord can charge you for any reasonable costs related to approving the assignment, such as the cost of doing a credit check on the person you want to assign the unit to. The landlord cannot charge you more than their actual costs.
If the landlord does not reply within seven days of your request to assign the rental unit to a specific person, you can end your tenancy early by giving your landlord a
Tenant's Notice to Terminate the Tenancy (Form N9).