How to contest a rent increase in Québec

A rent increase notice has just arrived and the amount seems high. Before signing or giving in, know that Québec law gives you the right to refuse this increase and stay in the unit, under certain conditions.

This article explains step by step how to contest a rent increase in Québec: the deadlines to respect, the calculation method used by the Tribunal administratif du logement (TAL), Québec’s rental housing tribunal, and the documents to prepare if the case goes to a hearing.

Tenants’ rights when facing a rent increase in Québec

In Québec, there is no fixed mandatory rate for rent increases. Each year, the Tribunal administratif du logement (in French) publishes a base rate that serves as a reference, without constituting a mandatory cap. Since January 1, 2026, this rate is based on the three-year average of the consumer price index in Québec, rather than on the CPI of a single year.

For leases starting between April 2, 2026 and April 1, 2027, this base rate is 3.1%. A landlord can justify an increase above this rate if specific expenses explain it: higher municipal or school taxes, higher insurance premiums, or major work carried out on the building.

An increase well above the base rate, without documentation supporting these expenses, can generally be contested.

Deadlines to refuse a rent increase

Respecting deadlines is the most important element of a challenge. A refusal sent late is legally equivalent to accepting the increase.

Here are the deadlines the landlord must respect to send their notice, depending on the length of the lease:

• Lease of one year or more: notice between 3 and 6 months before the end of the lease
• Lease of 6 months to 1 year: notice between 1 and 2 months before the end
• Lease of less than 6 months: notice between 1 and 2 weeks before the end
• Lease with an indeterminate term: notice of at least 1 month

Once the notice is received, the tenant has only one month to respond. Without a response within that deadline, the law considers the increase accepted, with no possible recourse afterwards.

How to contest a rent increase in writing

To contest the increase, a written response must be sent to the landlord within one month of receiving the notice. Silence is equivalent to acceptance: a verbal response is not enough and cannot be proven in the event of a dispute.

What the refusal notice must contain

The letter must clearly state that the tenant refuses the proposed increase and wishes to remain in the unit. The official TAL form provided for this purpose can be used, or a letter written and dated by the tenant.

Proof of sending and receipt must always be kept: email with acknowledgment of receipt, registered letter or hand delivery with signature. This proof will be essential if the case goes before the Tribunal.

What happens after a refusal at the TAL

Once the refusal has been sent, responsibility for moving the file forward changes sides. It is now up to the landlord to decide whether they wish to maintain their increase request.

The TAL’s role in fixing the rent

If the landlord wishes to maintain the contested increase, they must file an application for the fixing of rent with the Tribunal administratif du logement within one month of the refusal. If they do not do so within that deadline, the increase automatically lapses and the lease is renewed under the current conditions, without any further action on the tenant’s part.

If the landlord files the application, they will have to provide the Tribunal with the form detailing the building’s revenues and expenses: taxes, insurance, energy, maintenance and management costs. This document must be sent to the tenant, with proof of notification to the Tribunal.

For landlords, see our property management service in Montréal

The criteria used to determine a reasonable rent

The TAL sets the rent by taking into account the actual increase in costs borne by the landlord. The new method in force since 2026 simplifies this calculation by relying mainly on the three-year CPI average, adjusted if specific, documented expenses justify it.

Until the Tribunal’s decision, the tenant must continue to pay the current rent. If the decision comes after the scheduled renewal date, the Tribunal may allow the payment of arrears to be spread over the term of the new lease.

Documents and evidence to gather before the hearing

If the case goes before the Tribunal, rigorous preparation increases the chances of obtaining a favourable decision.

Type of document	What it helps demonstrate
Copy of the increase notice received	The date of receipt and the exact content of the request
Copy of the refusal letter	Compliance with the one-month deadline to contest
Current lease and rent history	The reference amount for calculating the increase
Calculation of the applicable TAL base rate	The comparison between the requested increase and the official reference
Evidence of the unit’s condition	The absence of major work justifying a significant increase

The official calculation tool of the Tribunal administratif du logement makes it possible to estimate whether the proposed increase significantly exceeds the reference rate applicable to the lease concerned.

Conclusion

Contesting a rent increase in Québec is a right governed by precise deadlines that must be scrupulously respected. A written refusal sent within one month of receiving the notice protects the right to stay in the unit under the current conditions while the file is processed, and then places responsibility for the next steps on the landlord. Documenting each step and consulting official resources before the deadline remains the best protection when in doubt about the applicable calculation.

Learn more about rental disputes and representation at the TAL

FAQ

Can a tenant refuse any rent increase in Québec?

Yes, in the vast majority of cases. The tenant can refuse a rent increase and remain in their unit, with some exceptions. If the unit is in a building built or converted for rental purposes five years ago or less, refusing the increase generally obliges the tenant to leave at the end of the current lease.

How long do you have to contest a rent increase?

The tenant has only one month from the date of receipt of the increase notice to send their refusal in writing to the landlord. After that deadline, the law considers the increase accepted, with no possibility of going back. Dated proof that the refusal was sent is essential to protect the tenant’s rights.

Can the TAL impose a higher increase than the one proposed?

Yes, it is possible. The Tribunal sets the rent according to the actual costs borne by the landlord, not only according to the amount initially proposed. If the building’s documented expenses justify an increase higher than the one announced in the notice, the TAL may render a decision setting a rent higher than the initial request.