Quick Answer
Ontario's 2027 rent increase guideline is 1.9%, calculated from the Ontario Consumer Price Index and applied to a tenant's lawful rent. For most covered units, a landlord must also wait 12 months between increases and give written notice at least 90 days before the higher rent begins.
Introduction
The Ontario rent increase guideline for 2027 caps most annual increases at 1.9%, and a landlord can charge less or nothing. The figure comes from the provincial Consumer Price Index, which measures price inflation across Ontario's economy. Tenants should calculate the increase against the lawful rent, while landlords should document the notice date, effective date, and applicable guideline. A small percentage change can still materially affect a household's monthly budget over a full lease period.
Key Takeaways:
Ontario's 2027 rent increase guideline is 1.9% for most rent-controlled units.
Apply the percentage to the current lawful rent, not an advertised market rent.
Above-guideline increases require a Landlord and Tenant Board process or tenant agreement.
Ontario Rent Increase Guidelines: How the 2027 Formula Works
The province sets the rent increase guideline using the Ontario Consumer Price Index, a Statistics Canada measure of inflation, with data from June to May, and caps the result at 2.5%. The published 2027 guideline is 1.9%. The calculation protects against arbitrary increases, but it does not make every tenancy subject to the same rules.
Calculate the 1.9% increase from lawful rent
Multiply the current lawful monthly rent by 1.9%, then add that result to the existing rent. Lawful rent is the amount legally payable before the increase takes effect, which may differ from a rent amount proposed in an informal message or a new listing.
$1,000 rent: The monthly increase is $19.
$1,500 rent: The monthly increase is $28.50.
$2,000 rent: The monthly increase is $38.
$2,500 rent: The monthly increase is $47.50.
Why CPI determines the annual guideline
The guideline follows inflation, not neighbourhood rents or an individual building's operating costs. That distinction matters: a sharp rise in market rents does not automatically raise a sitting tenant's permitted increase.
Rent Increase Notice in Ontario: Timing, Coverage, and Documentation
A valid increase depends on timing as much as percentage. A landlord generally must wait 12 months after a tenancy begins or after the last increase, then give written notice at least 90 days before the increased rent takes effect. For example, an increase starting January 1, 2027 needs notice by October 3, 2026. A verbal notice, an unexplained payment request, or a notice that arrives too late does not replace the required process.
Check the notice before changing a payment amount
Read the form, current rent, proposed rent, percentage, and effective date together before adjusting an automatic payment. A compliant rent increase notice should make the calculation traceable, and the 1.9% rate should be applied only where the unit is subject to the guideline. Tenants should retain the notice and payment records because they establish what was requested and what was paid.
For example, a tenant paying $1,000 in lawful rent would see a $19 increase, to $1,019, but the effective date must still meet the 12-month interval and 90-day written-notice requirement. These timing requirements apply even when the percentage itself is correct.
Know when the guideline may not apply
The guideline does not automatically govern every rental arrangement, so tenants should confirm whether the guideline applies to their unit under the Residential Tenancies Act. Units first lived in after November 15, 2018 are generally exempt, though the 12-month and 90-day rules still apply. When the status is unclear, preserve the paperwork and seek information before accepting an increase as legally payable.
Above-Guideline Increases and Landlord and Tenant Board Rules
An above-guideline increase is different from the annual 1.9% increase. It usually involves a landlord application to the Landlord and Tenant Board, although limited qualifying tenant-agreement cases can also apply, and it is not created merely by placing a larger percentage on a notice. The Board process gives affected tenants an opportunity to respond.
When a landlord may seek more than the guideline
The Landlord and Tenant Board may approve an above-guideline increase only through its application process. This is not a universal building-maintenance surcharge: the Board can allow an increase only for security service costs, certain capital expenses, or unusually high municipal tax increases, and tenants should assess the claimed work, dates, and notice materials. The Board's Interpretation Guideline 14 on applications for rent increases explains the hearing and response steps.
Tenants should review every hearing document promptly and follow the deadlines stated in it. These procedural deadlines are safeguards, not optional reminders.
The table separates the ordinary annual guideline from the additional route that requires Board involvement.
Issue | Annual guideline increase | Above-guideline application |
|---|---|---|
2027 rate | 1.9% | Depends on the Board's order |
Calculation basis | Lawful current rent | Landlord application and Board order |
Notice timing | 90 days' written notice | 90 days' written notice, plus hearing deadlines set by the Board |
Maximum additional amount | Guideline only | Up to 3% above the guideline per year for capital or security costs; no set cap for extraordinary municipal tax increases |
Duration | Annual increase cycle | Depends on the Board's order |
The practical difference is authority: a regular guideline increase follows the annual percentage and notice rules, while an above-guideline increase requires a Board process tied to specified costs or services.
Responding without losing the paper trail
Tenants should not ignore a hearing notice or assume that a requested amount is final. Keep the notice, photos or correspondence relevant to claimed work, payment history, and any response filed with the Board. Clear records support both a tenant challenging an unlawful increase and a landlord explaining a lawful one.
Track the New Rent and Plan Monthly Payments
Once an increase is valid, update the recurring amount on the effective date rather than paying the new rate early. Digital rent payment tools can reduce avoidable mistakes by keeping payment status, receipts, and recurring instructions in one place. That record is especially useful when an increase notice and an autopay schedule fall in different calendar months.
Use records to verify what was paid
A payment record should show the amount sent, date, and confirmation of transfer, separate from the landlord's proposed amount. Understanding tenant rights in Ontario and Ontario's rent increase limits helps when reviewing an increase, and complete records show whether your payments matched the lawful rent. TenantPay provides real-time payment tracking, auto-generated receipts, and tax-ready payment summaries for tenants who prefer to manage payments digitally.
For tenants paying rent online in Canada, changing an automated payment should follow written confirmation that the new amount and date are correct. Do not use a payment tool to resolve a legal disagreement by itself; the calculation, notice, and unit's coverage remain the key facts. Payment technology is most useful when it preserves an accurate trail around those facts.
Build the increase into a realistic household budget
Start budgeting with the amount actually due after a lawful increase, not the original monthly figure. Add the new rent to recurring expenses, review the change before the effective date, and keep a reserve for timing errors or disputed amounts. TenantPay can help tenants schedule autopay, receive reminders, and retain a consistent payment history while they manage a rent change.
Conclusion
Ontario's 2027 rent increase guideline is 1.9%, based on the Ontario CPI. Confirm that the unit is subject to the guideline, verify the percentage calculation, and check that the landlord gave 90 days' written notice after the required 12-month interval. Treat an above-guideline request differently because it requires Landlord and Tenant Board involvement and may depend on qualifying costs. A written notice and complete payment record make it easier to address an error before it becomes a larger dispute.
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Frequently Asked Questions (FAQs)
How is the Ontario rent increase cap calculated?
The Ontario rent increase cap is calculated from the Ontario Consumer Price Index, which measures inflation in the prices of goods and services across the provincial economy, and the province publishes the resulting annual guideline for covered rental units.
What is the 2027 rent increase guideline in Ontario?
Ontario's 2027 rent increase guideline is 1.9%, meaning most landlords can increase a covered tenant's lawful rent by up to that percentage without first applying to the Landlord and Tenant Board for approval.
How much can a landlord increase rent in Ontario 2027?
For most rent-controlled units, rent may increase by up to 1.9% in 2027, provided the landlord uses the lawful current rent, waits 12 months since the last increase, and gives at least 90 days' written notice.
Is the rent increase cap different in Toronto?
The rent increase cap is the same in Toronto because the provincial 1.9% guideline applies across Ontario, although a unit's legal coverage still determines whether the guideline applies. Toronto's Affordable Housing Program projects, however, may raise rent only to the lower of the guideline-increased rent or the CMHC Average Market Rent.
Can a landlord raise rent above the guideline in Ontario?
A landlord can raise rent above the guideline in Ontario through a Landlord and Tenant Board application for qualifying reasons, and cannot collect the above-guideline amount until the Board issues an order. In limited cases, a tenant can also agree in writing to a higher increase in exchange for something from the landlord, such as major repairs or a new service.
How to dispute a rent increase in Ontario?
To dispute a rent increase in Ontario, preserve the notice and payment records, check the unit's coverage and notice timing, and apply to the Landlord and Tenant Board within 12 months after the amount was first charged. If a hearing is scheduled, follow the deadlines in the hearing documents.
About the Author
Sarah Williams is a Rent, Housing & Property Data Writer covering tenant rights, rent collection, credit reporting, and rental-market mechanics in Canada. Her work focuses on translating regulatory processes and payment systems into practical information for tenants, landlords, and property managers.