Guides
Ontario Rent Increase Guideline: How Much Notice Do You Need?
Ontario rent increase guideline rules cap yearly rent rises for most units. Learn the N1 form, the 90 day notice, and what happens if you skip it.
What to take away
- The Ontario rent increase guideline is the maximum percentage most sitting tenants can face in a year, set each August for the following year under the Residential Tenancies Act, 2006.
- A guideline increase needs the N1 form from the Landlord and Tenant Board and at least 90 days written notice before the increase takes effect.
- An increase above the guideline needs an application to the Board, not a bigger number on the N1.
- Rent can only rise once every 12 months, counted from the last lawful increase or the start of the tenancy.
- Skipping the form or the notice period makes the increase void, and the tenant can file with the Board to recover what was paid.
Who sets the guideline and who enforces it
Ontario splits the rulemaking. The province sets the annual guideline percentage. The Landlord and Tenant Board, an adjudicative tribunal, decides disputes between landlords and tenants. Municipalities do not set residential rent caps, though they do license some rental housing and enforce property standards.
The guideline applies to most private residential units first occupied before 15 November 2018. Units first occupied after that date are exempt from the guideline, but not from the notice rules. Social housing, long term care and some other categories sit outside the guideline as well.
The province publishes the figure each year: the Ontario rent increase guideline for 2027 is 1.9%, after 2.1% for 2026 and 2.5% for 2025. It is calculated from the Ontario Consumer Price Index, using data from June to May, and it is capped at 2.5%. The statute behind it is the Residential Tenancies Act, 2006, which sets out both the cap and the notice mechanics.
What triggers the N1 form
Any rent increase on a guideline-covered tenancy triggers the N1, the Notice of Rent Increase. It applies to monthly and weekly tenancies alike. A landlord cannot raise rent by conversation, by email alone, or by a line in a renewal lease.
N1 Form Requirements
- Existing rent stated
- New rent stated
- Effective date stated
- Guideline percentage stated
- Served at least 90 days before
- Monthlyfirst day of rental period
Some situations change the paperwork:
- An above-guideline increase requires an application to the Board and an approved order before any extra rent is charged.
- A new tenant in a vacant unit gets a new lease, so no N1 is needed for the initial rent.
- A unit exempt from the guideline still needs the N1 and the 90 days, just with no cap on the amount.
- A rent increase after a capital expenditure or an extraordinary cost follows the same application route, not the N1.
Documents and dates that decide the case
If a tenant disputes the increase, the Board looks at paperwork. Keep the following on file: a copy of the N1 as served, proof of how and when it was served, the lease, the rent ledger showing the date and amount of the last lawful increase, and, for an exempt unit, the records showing when it was first occupied.
Dispute File Checklist
- Copy of N1 as served
- Date of service recorded
- Proof of service
- Prior rent record
- Lease confirming rental period start
Service counts from the day the notice is given, not the day it is written. If the 90th day lands on a weekend, the notice still stands as long as it was served in time. Mail service changes the counting, so many landlords serve in person and keep the receipt.
A rent increase that ignores the 12 month rule is void even when the amount sits under the guideline.
Example: a small portfolio on one calendar
A landlord in Hamilton owns six units, all occupied before 2018. In April, the landlord decides to raise rent on two units where the last increase was 14 months earlier. The N1 forms are served on 5 May for an increase effective 1 September.
Hamilton Six-Unit Example
- AprilDecide to raise two units
- 5 MayN1 served
- 1 SeptemberIncrease effective
- 119 daysNotice given
That is 119 days of notice, comfortably past 90. The increase equals the guideline for the year. The other four units stay flat because their last increases were 8 to 11 months ago. Nothing is charged until the effective date, and the ledger records the old and new rent separately.
How long approval takes
A guideline increase needs no approval. The clock is the 90 days of notice.
Guideline vs Above-Guideline
Guideline increase
- Approval
- None needed
- Clock
- 90 days notice
- Timeline
- Fixed
- Risk
- Low
Above-guideline increase
- Approval
- Board order
- Clock
- Hearing wait
- Timeline
- Varies by region
- Risk
- Delays
An above-guideline application is different. It goes to the Landlord and Tenant Board on Form L5, Application for a Rent Increase Above the Guideline, and the Board schedules a hearing. Timelines vary by region and caseload, and delays at the Board have stretched well beyond the statutory target in recent years. Planning around those waits matters, and our guide to Ontario Landlord and Tenant Board delays explains how filing dates shift.
If the province announces a lower guideline for the following year, an increase already served at the old figure can still be challenged. The safe practice is to check the published guideline before the N1 goes out.
What happens if you skip it
A rent increase without a valid N1, or with short notice, is void. The tenant keeps paying the old rent, and any extra amount collected is recoverable. A tenant can apply to the Board for an order that the landlord repay the difference, and the Board can also order a rebate of the illegal portion. A tenant who believes the notice was improper or the amount too high can dispute it at the Board within 12 months after the amount was first charged.
Repeated non-compliance carries more risk. The Board can award costs against a landlord and, in serious cases, impose administrative fines under the statute. A landlord who raises rent twice in 12 months faces the same outcome: the second increase is void and the money goes back.
Rules vary outside Ontario, and our comparison of rent increase rules across Canada sets out where a guideline exists and where it does not. Landlords operating in several provinces should also check how their lease paperwork differs, which our guide to Canadian lease forms by province covers.
