How to Dispute a Rent Increase in Ontario
A rent increase notice isn't the final word. In Ontario, plenty of increases are invalid — wrong notice, wrong timing, or above what's allowed — and you have clear ways to push back without risking your tenancy.
First, Check If It's Even Valid
Many increases fail on the basics. An increase is not valid unless it uses proper written notice (Form N1) given at least 90 days ahead, comes no more than once every 12 months, and (for rent-controlled units) stays at or below the annual guideline. If any of those is off, the increase doesn't take effect.
Is Your Unit Exempt?
Units first occupied after November 15, 2018 are exempt from the guideline, so there's no percentage cap — but the 90-day notice and once-a-year rules still apply. Confirm your unit's status before assuming an increase is illegal. Our AGI checker walks through this in seconds.
Above-Guideline Increases (AGIs)
If the increase is above the guideline, the landlord must apply to the LTB for an above-guideline increase order (usually for major capital work or big cost increases). You'll get notice and the right to participate in the hearing. Don't pay the excess unless and until the LTB approves it.
How to Respond
A calm, documented response wins:
- Put your objection in writing and keep a copy — our dispute letter gives you a template.
- Keep paying your lawful rent (the old amount, or the valid guideline amount) so you're never in arrears.
- Gather evidence: the notice, your lease, and payment history.
- For an AGI, attend the hearing and use Tenant Duty Counsel.
Recovering an Illegal Increase
If you already paid an increase that turns out to be invalid, you can apply to the LTB (a T1) to recover the overpayment. There are time limits, so act rather than waiting. An illegal increase doesn't become legal just because you paid it for a while.