Ontario Rent Increase Rules for 2026: What Ottawa Landlords Can and Can’t Do

For Ottawa landlords, rent increases are one of the most important parts of protecting long-term rental income. But in Ontario, rent increases must follow strict rules under the Residential Tenancies Act. Whether you own one rental property or a growing portfolio, understanding what you can and cannot do in 2026 will help you stay compliant, avoid disputes, and keep your rental investment performing well.

How Rent Increases Work in Ontario

In Ontario, landlords cannot raise rent whenever they want. In most cases, rent can only be increased once every 12 months, by the provincial rent increase guideline, after giving proper written notice, and using the correct Ontario Landlord and Tenant Board form. The required notice period is usually at least 90 days before the increase takes effect.

What Is the Ontario Rent Increase Guideline?

The Ontario rent increase guideline is the maximum percentage a landlord can increase rent for most rent-controlled units without applying to the Landlord and Tenant Board. The guideline is set by the Ontario government each year and is designed to balance rising operating costs for landlords with affordability protections for tenants.

Which Rental Units Are Rent Controlled?

Generally, rent control applies to most residential rental units first occupied for residential purposes before November 15, 2018. Some newer rental units may be exempt from the annual guideline, but exemption rules can be complex. If you are unsure whether your Ottawa rental property is rent controlled, review the property’s occupancy history before issuing an increase.

How Much Notice Must Landlords Give?

In most cases, Ontario landlords must give tenants at least 90 days’ written notice before a rent increase takes effect. The notice must be delivered properly and should use the correct official form. A rent increase may be considered invalid if the tenant did not receive enough notice, the wrong form was used, the increase happens too early, or the amount is higher than allowed.

Can Landlords Raise Rent Above the Guideline?

In some cases, landlords may apply for an above-guideline rent increase through the Landlord and Tenant Board. This is not automatic. The landlord must apply and receive approval. Above-guideline increases may be considered for major capital repairs, significant municipal tax increases, or eligible security service costs.

Can Rent Be Increased Between Tenants?

When a tenant moves out and a new tenancy begins, landlords can usually set a new market rent for the incoming tenant. However, pricing too aggressively can increase vacancy time, reduce tenant quality, or create longer leasing periods. In Ottawa, a smart rental pricing strategy should consider market rent, neighbourhood demand, property condition, comparable listings, seasonality, tenant profile, and vacancy risk.

Common Rent Increase Mistakes Ottawa Landlords Should Avoid

Many rent increase problems come from small administrative errors. Common mistakes include increasing rent too early, giving less than 90 days’ notice, using the wrong form, misunderstanding rent control exemptions, raising rent above the guideline without approval, and failing to document notices and communication.

How Rent Increases Affect Tenant Retention

A rent increase is not only a legal process. It is also a relationship moment. Well-managed rent increases are clear, timely, and professional. If the property is well maintained and the increase is explained properly, tenants are more likely to understand and stay.

How Property Management Helps With Rent Increases

A professional property management company can help landlords review rent increase eligibility, prepare proper notices, track important dates, monitor market rent, communicate with tenants, reduce vacancy risk, and keep documentation organized. For out-of-town landlords or busy investors, Ottawa property management can prevent costly mistakes and save time.

Final Thoughts

Ontario rent increase rules are manageable, but they need to be followed carefully. For Ottawa landlords, the key is to combine legal compliance with smart rental strategy. Before increasing rent in 2026, confirm whether the unit is rent controlled, check the current guideline, use the proper notice form, and give enough time. Stewart Property Management can help you assess your options and manage the process professionally.