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Ontario Rent Increase Calculator (2026 & 2027)
Free Ontario rent increase calculator: the most your rent can go up under the guideline (2.1% in 2026, 1.9% in 2027), the 90-day notice deadline, and the exemption for units first occupied after November 15, 2018.
Your Ontario rent
Highest new rent allowed
$2,038.00
| 2027 guideline | 1.9 % |
| Largest increase | $38.00 a month |
| Written notice by | October 3, 2026 |
| 2025 | 2.5 % |
| 2026 | 2.1 % |
| 2027 | 1.9 % |
Rent can go up once every 12 months, with at least 90 days' written notice (an LTB form). A larger increase needs approval from the Landlord and Tenant Board.
Rules last checked October 2026. Not legal, tax or financial advice. 🔒 Everything stays on your device.
✅ Rules last checked:
📚 Official sources: Ontario.ca: residential rent increases
We build every tool from the official rules and re-check them when they change. Always confirm with the official source before you rely on a result.
🛠️ Spotted a mistake or an out-of-date rule? Tell us
Questions people ask
What is the Ontario rent increase guideline for 2027?+
1.9% for increases between January 1 and December 31, 2027. It was 2.1% in 2026.
Does the guideline apply to new buildings?+
Not to units first occupied after November 15, 2018, but notice and 12-month rules still apply.