Enter the current rent
Use the rent amount before the proposed increase, not the amount after parking, utilities, or separate charges unless those are part of rent.
Ontario rent calculator
Ontario Rent Increase Calculator
Estimate the monthly and annual impact of a proposed Ontario rent increase and flag basic questions about the entered guideline and rent-control status.
Before you calculate
This calculator compares a proposed Ontario rent increase with the guideline percentage you enter. It does not decide whether a unit is rent-controlled, whether the notice is valid, or whether an exception applies.
Use the guideline for the year the increase takes effect. The default is editable because Ontario guidelines are year-specific.
How to use this calculator
Match the correct year
Check the guideline for the effective-date year. If the increase takes effect in a different year, update the guideline field.
Treat the flag as a prompt
An above-guideline flag means you should verify the rules. It is not a legal ruling.
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Enter rent details
Ontario Rent Increase Calculator
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Common mistakes
- Using last year's guideline for an increase that takes effect in a new calendar year.
- Assuming every Ontario rental unit is rent-controlled.
- Checking only the percentage and forgetting notice period, correct form, and timing rules.
- Ignoring whether the unit was first occupied after the rent-control exemption date.
- Treating this estimate as legal advice instead of a screening tool.
Coming soon: downloadable spreadsheet version
The calculator is free. A spreadsheet version may be added later for rent-history tracking.
Sources and assumptions to verify
The guideline percentage is editable and defaults from data/assumptions.js.
Rent-control status, exemptions, notice periods, and proper forms must be
confirmed with official Ontario sources.
- Ontario.ca residential rent increases
- Landlord and Tenant Board forms
- The effective date year of the proposed increase
- The unit's first-occupied date and whether an exemption applies
FAQ
Is this legal advice?
No. It is general information. Confirm your situation with official Ontario sources or a qualified professional.
What if I am not sure about rent control?
The result will flag uncertainty. Rent-control status can depend on first occupancy and other facts.
Can the guideline change?
Yes. The guideline is year-specific and should be verified before using a result.
Does this check proper notice?
No. It reminds you to check notice period, form, timing, and exceptions.
Which year's guideline should I use?
Use the guideline for the year the rent increase takes effect, not necessarily the year the notice is prepared.
What if the proposed increase is above the guideline?
Do not assume the answer from this calculator alone. Check whether an above-guideline application, exemption, or other rule is involved.
Disclaimer
This tool is for general informational purposes only. It is not financial, legal, tax, employment, or government advice. Confirm details with your employer, lender, government source, or qualified professional.
Strong legal disclaimer: Ontario residential tenancy rules can be fact-specific. Do not rely on this calculator as legal advice.
Last reviewed: July 28, 2026
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