A Landlord's Guide to Ontario's Residential Tenancies Act

This article is general information, not legal advice. For specific situations, consult the Landlord and Tenant Board or a qualified legal professional.

The Residential Tenancies Act, 2006 (RTA) is the law that governs most residential landlord-tenant relationships in Ontario. It is detailed and prescriptive, and it is administered by the Landlord and Tenant Board (LTB), which resolves disputes between landlords and tenants. For landlords, the practical reality is that the RTA defines a process for almost everything, and following that process precisely is what keeps you on solid ground. This guide is a map of the framework, not a substitute for the Act itself or for legal advice.

The standard lease

For most private residential tenancies signed in Ontario, landlords are required to use the province's standard lease form. It sets out the basic terms (rent, parties, the unit) in a consistent format. If a landlord fails to provide a standard lease when a tenant requests one in writing, the tenant gains specific rights, including the ability to withhold a month's rent in some circumstances. Using the correct lease from the start removes an avoidable risk.

Rent and rent increases

Rent rules are among the most tightly regulated parts of the RTA:

• Rent can generally be increased only once every 12 months for the same tenant.
• Increases for covered units are limited to the annual rent increase guideline (2.1% for 2026), unless the unit is exempt or the LTB approves an above-guideline increase.
• A rent increase requires at least 90 days' written notice on the prescribed form.

Units first occupied after November 15, 2018 are exempt from the guideline cap, though the notice and once-a-year rules still apply. We cover the mechanics in detail in our 2026 rent increase guideline guide.

The notice forms landlords actually use

Much of the RTA in practice runs on standardized LTB forms. The ones landlords encounter most:

• N1: notice of rent increase.
• N4: notice to end a tenancy for non-payment of rent. It starts a process; it is not an eviction by itself.
• N5, N6, N7: notices to end a tenancy for reasons such as damage, illegal acts, or interference with others.
• N12: notice when the landlord, a buyer, or a close family member intends to move into the unit.
• L1, L2: applications to the LTB to actually obtain an order, after the relevant notice.

The crucial point: in Ontario, a landlord cannot evict a tenant directly. Serving a notice begins a process that, if the issue is not resolved, leads to an application and a hearing at the LTB. Only the Board can order an eviction, and only the Sheriff can enforce it. Self-help measures (changing locks, removing belongings, shutting off utilities) are illegal and expose the landlord to serious penalties. We walk through the full sequence, form by form, in our guide to how eviction works in Ontario.

Maintenance and the landlord's obligations

The RTA requires landlords to keep rental units in a good state of repair, fit for habitation, and compliant with health, safety, and maintenance standards, regardless of whether the tenant was aware of problems before moving in. Tenants have avenues to compel repairs through the LTB, and unresolved maintenance issues can become a factor in disputes over rent. A documented maintenance process, with dated records of requests and resolutions, is both good practice and useful evidence.

Deposits: what is and is not allowed

Ontario does not permit damage deposits or general security deposits the way some jurisdictions do. A landlord may collect a rent deposit (commonly last month's rent), which must be applied to the final month and on which the landlord must pay annual interest at the guideline rate. Collecting deposits the Act does not allow is a frequent and avoidable mistake.

Where landlords most often get caught

Across thousands of LTB matters, the recurring themes are procedural rather than dramatic: the wrong form, the wrong notice period, an increase served too soon after the last one, a missing standard lease, an improper deposit, or a maintenance record that does not exist. The Act tends to favour the party who followed the process and kept the documentation.

That is the practical lesson. The RTA is not primarily a test of intentions; it is a test of process and records. The landlords who rarely lose at the Board are the ones who can produce the lease, the notices, the dates, and the maintenance history on demand. Keeping each tenancy's documents, key dates, and communications connected in one place (see Habyn's lease management and tenant portal) turns that from a filing burden into a byproduct of running the rental.

Ontario's rules reward landlords who treat compliance as a system rather than a scramble. Learn the framework, use the right forms, document everything, and bring in legal help for anything contested. That combination is what keeps a rental business out of trouble.