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LegalCalc Ontario
Ontario Calculator

Ontario Rent Increase Calculator

Estimate the ordinary Ontario rent-increase guideline, when the 12-month interval permits another increase, and when 90 days' written notice on an approved form has been given. Based on the Residential Tenancies Act, 2006 (ss. 116, 119, 120) and the Ontario rent-increase guideline.
Estimate only. This tool is not legal advice. It models arithmetic under the ordinary guideline, the 12-month rule, and the 90-day notice rule; it does not decide exemption, validate service or forms, or determine entitlement to any above-guideline increase.
Unit status

This tool does not determine whether a unit is legally exempt. Choose the status that best matches what you have verified.

Rent amount
Timing
Guideline rate

The tool auto-applies the verified guideline for supported years (2026 = 2.1%, 2027 = 1.9%). For any other year, enter a manual rate you have confirmed against the official Ontario guideline.

Actual approved above-guideline increase (optional)

Enter the percentage only if the LTB has actually ordered an above-guideline increase or an enforceable agreement applies. The order and any statutory phase-in rules under s. 126 control; this calculator is arithmetic only and does not decide entitlement.

Important: This calculator does not decide whether a unit is exempt from the guideline, and it does not validate the service or completion of any notice or form. It does not model AGIs, N10 agreements, care-home service charges, social housing, turnover rent, or the July 2026 seasonal air-conditioning increase.
  • Enter a valid proposed effective date (YYYY-MM-DD).
Status summary
Unit status: controlled
Timing
  • 12-month rule (based on -): not enough information
  • 90-day written-notice rule: not enough information
  • Combined earliest estimated effective date: -
Likely LTB form
Form N1 - ordinary notice for a guideline-controlled unit. See the Tribunals Ontario LTB forms page.
Notes
  • Enter either the tenant's last rent-increase date or, if there has been no prior increase, the tenancy start date so the 12-month rule can be checked.
  • Enter the notice service date so the 90-day written-notice rule can be checked. An increase is void without the required 90 days' written notice on an approved form.
Estimate only
Calculations are estimates. Laws, rates, and rules can change. Obtain professional legal or financial advice before relying on any result.

About this calculator

In most cases in Ontario, a landlord may increase the rent for the same tenant only once every 12 months, and must give at least 90 days' written notice on an LTB-approved form (usually the N1). For years covered by the ordinary guideline, the increase is capped at the guideline percentage set for the year the increase takes effect.

Ontario has published guidelines for 2026 at 2.1% and 2027 at 1.9%. This tool only applies rates for those years. For years outside this window it will show a warning rather than invent a number.

Units first occupied for residential purposes after 15 November 2018 may be exempt from the ordinary guideline. This tool does not determine legal exemption from an address or year. The tenant, landlord or LTB is responsible for that determination.

Guideline-exempt units still generally follow the once-every-12-months rule and the 90 days' written notice on an approved form.

Above-guideline increases (AGIs), N10 agreements, care-home service charges, social housing, turnover rent, and the July 2026 seasonal air-conditioning increase are outside this version and are not modelled.

Worked example

Facts. Current lawful rent $2,000. Unit is guideline-controlled. Last increase took effect on 1 June 2026. Landlord serves an N1 on 15 February 2027 proposing a new rent of $2,038 effective 1 June 2027.

Guideline. The 2027 guideline is 1.9%. Ordinary maximum increase = $2,000 × 1.9% = $38.00. Ordinary maximum new rent = $2,038.00. The proposed $2,038 is at or below the ordinary maximum.

Timing. 12-month rule: earliest is 1 June 2027 (last increase + 12 months). 90-day rule: 15 February 2027 + 90 days = 16 May 2027. Later of the two: 1 June 2027. The proposed effective date meets both rules.

Frequently asked questions

Official sources

Last reviewed: 19 July 2026Spotted an error? Suggest a correction →