Check an Ontario rent increase against the rules — the 2026 guideline, the 12-month rule, 90 days' notice and the post-2018 exemption — then who to call in Belleville for free.
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Ontario limits how much most rents can go up, how often, and how much warning you must be given. Enter the dates and numbers from your notice to see whether it follows the rules — and, if it doesn't, who to call for free. This is a guide, not legal advice: the Landlord and Tenant Board makes the binding decision.
Ontario sets a rent-increase guideline each year. It is 2.1% for increases taking effect at any point in 2026 (it was 2.5% in 2025). A landlord who wants more than the guideline has to apply to the Landlord and Tenant Board first — they cannot just charge it. Check the current year's figure on the official page below.
In the law: Residential Tenancies Act, 2006. Rent can rise once every 12 months, with at least 90 days' written notice given on the Landlord and Tenant Board's Form N1.
Fill in the dates from your notice. Nothing you type is saved or sent anywhere — it stays on your device.
The day your higher rent is meant to begin.
When the landlord told you in writing.
Or the day you moved in, if it has never changed.
Optional — only needed to work out the percentage.
Enter your dates above to check them against the rules.
If a landlord breaks these rules
These rules cover most private rentals in Ontario. They do not cover community or subsidized housing (rent-geared-to-income), long-term care and most retirement homes, a unit where you share a kitchen or bathroom with the owner, or student residences. When in doubt, the clinic below can tell you which rules apply to you.
Source: Ontario Ministry of Municipal Affairs and Housing — rent increase guideline; Residential Tenancies Act, 2006, checked 23 July 2026 (6 days ago).
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