Rent increases in Ontario are tightly scripted: the right amount, the right form, the right timing. Get any of the three wrong and the increase can be void — meaning the tenant legally keeps paying the old rent, sometimes long after you thought you’d raised it.

Here’s the script.

This is general information, not legal advice.

The four rules of a valid increase

1. Once every 12 months. At least 12 months must pass since the tenant moved in or since their last increase — whichever is later.

2. 90 days’ written notice, on the proper form. That’s the N1 (or N2 for exempt units). A text message, a chat at the door, or a letter you drafted yourself doesn’t count. No valid form, no valid increase.

3. Within the guideline — usually. For most units, the increase is capped at Ontario’s annual rent increase guideline, set by the province each year and published on ontario.ca (in recent years it has generally sat in the 1–2.5% range). Raising beyond the guideline requires applying to the LTB for an above-guideline increase, granted only in specific circumstances.

4. Know if your unit is exempt. Units first occupied for residential use after November 15, 2018 are generally exempt from the guideline cap — the 12-month and 90-day rules still apply, but the amount isn’t capped. This is a significant factor for owners of newer builds, additions, and new basement apartments.

Between tenancies: a different story

When a tenant moves out, Ontario has vacancy decontrol — the next tenancy can start at whatever rent the market supports. This is why pricing a turnover correctly matters so much, and why we put real work into market rents (see our Kincardine rent guide).

One caution: this is never a reason to push a tenant out. Improper-motive evictions carry serious penalties, and the LTB looks hard at them.

The mistakes that void increases

  • Rounding up the guideline (“let’s just make it an even $50”). The cap is the cap.
  • Sloppy dates. The 90 days runs to the day the new rent takes effect, which must also line up with the 12-month rule.
  • Skipping years, then “catching up.” Unused increases don’t bank. You can’t charge three years of missed guideline in one jump.
  • Assuming an exemption. “The building is newer” isn’t the test — first residential occupancy after November 15, 2018 is. Verify before relying on it.

A quiet strategic point

The best rent strategy isn’t always the maximum increase. A great tenant paying slightly under market who stays five years will usually out-earn a churn of market-rate tenants with vacancies between them — turnover, not restraint, is the expensive thing. We help our owners run that math property by property.

Want your increases handled correctly and your pricing decisions made with local data? That’s included in how we manage. Get a no-obligation quote or call 519-385-5494.