How Much Can a Landlord Increase Rent in Ontario?

Rent increases are one of the most common sources of confusion — and conflict — between landlords and tenants in Ontario. Every year, the provincial government sets a rent increase guideline, and understanding this number, along with the rules that surround it, is essential whether you’re a landlord planning your next increase or a tenant trying to figure out if a notice you received is even legal.

The 2026 Rent Increase Guideline

Ontario’s rent increase guideline for 2026 is 2.1%, the lowest cap in four years, down from 2.5% in 2025. According to the Government of Ontario, this guideline is the maximum amount a landlord can increase most tenants’ rent during a year without approval from the Landlord and Tenant Board (LTB).

In real terms, if your current rent is $2,000 per month, the maximum legal increase in 2026 is $42, bringing your new monthly rent to $2,042. Looking ahead, the guideline is already set to drop further to 1.9% for 2027, reflecting continued cooling in inflation. The Ontario government confirmed this shift toward capping increases at the rate of inflation in its official news release.

Which Units Does the Guideline Apply To?

The rent increase guideline applies to most private residential rental units covered by the Residential Tenancies Act, 2006, including rented houses, apartments, basement apartments, and condos. However, there are important exceptions. Units first occupied for residential purposes after November 15, 2018 — including new buildings, additions, and most new basement apartments — are exempt from the guideline entirely. This exemption was introduced to encourage new rental housing construction, and it means landlords of these newer units can set rent increases at market rates, provided proper notice is given.

Social housing is also covered by the Residential Tenancies Act, 2006, but follows different rules for rent control and notice requirements. And in care homes, such as retirement homes, the guideline only applies to the rent portion of the bill — not to service charges like meals, cleaning, or nursing care.

The Two Rules Every Rent Increase Must Follow

Regardless of the percentage involved, every legal rent increase in Ontario must follow two core requirements:

1. The 12-month rule — Rent can only be increased once every 12 months, counted from either the start of the tenancy or the date of the last rent increase, whichever is more recent.
2. The 90-day notice rule — A landlord must give the tenant written notice of the increase using the proper form at least 90 days before it takes effect.

The correct form for a standard rent increase is the Form N1: Notice of Rent Increase, available directly from the Landlord and Tenant Board. Informal notices — verbal requests, text messages, emails, or letters that don’t use the official form — are not legally valid, and a landlord relying on one risks having the increase declared unenforceable.

What If a Landlord Wants to Increase Rent Above the Guideline?

In certain circumstances, landlords can apply to the LTB for permission to raise rent above the standard guideline. This is known as an Above Guideline Increase (AGI), and it’s typically granted for reasons such as:

• Major capital expenditures (roof replacement, new windows, plumbing or structural repairs)
• Significant increases in municipal taxes or utility charges
• Extraordinary increases in operating costs, such as security services

Even when approved, AGIs are generally capped at 3% above the standard guideline, and landlords must file the appropriate application with supporting documentation through the Tribunals Ontario Portal. This process is more involved than a standard N1 notice and often benefits from professional guidance, since errors in the application can lead to delays or outright rejection.

What Happens If a Rent Increase Is Illegal?

If a landlord raises rent above the guideline without LTB approval, fails to use the correct notice form, or increases rent more than once within a 12-month period, the tenant is not obligated to pay the excess amount. Tenants who believe they’ve been overcharged can dispute the increase at the LTB, generally within 12 months of the amount first being charged, by filing a T1 application to recover the overpayment.

On the other side, landlords who want to pursue an eviction or collect unpaid rent must also follow strict procedural rules — using the correct forms, serving proper notice, and meeting all filing deadlines set out by the Landlord and Tenant Board. Missing even a small procedural step can result in an application being dismissed, regardless of how valid the underlying claim is.

Why Getting This Right Matters

Rent increase disputes rarely stay simple. A missed notice period, an incorrectly filled-out form, or confusion over which guideline year applies can turn a routine rent adjustment into a drawn-out LTB hearing. For landlords, that means lost time and potential legal exposure. For tenants, it can mean fighting to recover money that should never have been charged in the first place.

This is where working with an experienced landlord tenant paralegal Toronto professional makes a real difference — someone who understands the timing rules, the correct forms, and how the LTB evaluates these disputes can help you avoid costly mistakes on either side of the table.

Whether you’re a landlord preparing an N1 notice, considering an Above Guideline Increase application, or a tenant who believes your rent has been raised improperly, getting clear guidance early can save significant time, money, and stress. LegalEdge Inc.’s landlord and tenant paralegal services in Toronto can help you understand your rights, review your notice, and represent your interests at the Landlord and Tenant Board if a dispute arises.

Frequently Asked Questions

1. What is the Ontario rent increase guideline for 2026?
The guideline is 2.1% — the maximum most landlords can raise rent for existing tenants in 2026 without approval from the Landlord and Tenant Board.

2. Does the guideline apply to every rental unit in Ontario?
No. Units first occupied for residential purposes after November 15, 2018 are exempt, as are vacant units between tenancies. Most older private rentals — houses, apartments, basement units, and condos — are covered.

3. How much notice does a landlord have to give before increasing rent?
At least 90 days’ written notice using the official Form N1. Verbal notice, texts, or emails do not meet the legal requirement.

4. Can a landlord increase rent more than once a year?
No. Rent can only be increased once every 12 months, counted from the tenancy start date or the date of the last increase, whichever is more recent.

5. What can a tenant do if a rent increase seems illegal?
A tenant can dispute the increase at the Landlord and Tenant Board, generally within 12 months of the amount first being charged, by filing a T1 application to recover any overpayment.

6. Can a landlord ask for more than the guideline amount?
Yes, through an Above Guideline Increase (AGI) application to the LTB, but only for specific reasons such as major capital repairs or significant tax increases — and typically capped at 3% above the standard guideline.

Conclusion

Ontario’s 2026 rent increase guideline of 2.1% gives both landlords and tenants a clear benchmark, but the percentage is only part of the picture. Following the correct notice form, respecting the 12-month timing rule, and knowing which units are exempt are just as important as the number itself. Getting any of these details wrong can turn a routine rent adjustment into a lengthy dispute at the Landlord and Tenant Board. If you’re unsure whether a rent increase notice is valid — or you’re a landlord looking to apply for an increase above the guideline — speaking with a knowledgeable paralegal before taking action can help you avoid costly missteps and protect your rights on either side of the tenancy.