The landlord has to let the renter know what the lowest rent was in the 12 months before they sign the lease. If there is an excessive raise, you can ask the TAL to calculate a new amount. https://educaloi.qc.ca/actualites-juridiques/section-g-chien-garde-hausses-excessives/

In reality, landlords usually leave that blank, and renters are wary of starting on the wrong foot with their new landlord. There is a custom of leaving a copy of your lease in the kitchen drawer for the next person to find.