Works in collaboration with school service centres and school boards on the island of Montréal

What’s new

ERRATUM – 2025-2026 school tax bills

Please note that some errors related to the years indicated have inadvertently appeared on certain 2025-2026 school tax bills.

The following fields should read as follows:

On your bill:	Should read as follows:
Adjusted standardized value 2024	Adjusted standardized value 2025
2024-2025 School tax	2025-2026 School tax
Previous balance calculated at 2024-06-13	Previous balance calculated at 2025-06-13

Important: Please note that all information regarding the balance due and due date(s) is accurate as shown on the 2025-2026 school tax bill. You may proceed with the payment as indicated on the account.

We apologize for any confusion this may have caused.

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Annual school tax mailing for 2025-2026 on July 2, 2025

Each year after July 1^st, the CGTSIM mails out school tax bills for all taxable properties within the territories served by the school service centres and school boards on the Island of Montréal. The mailing date of the 2025-2026 school tax bills is July 2, 2025.

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Job openings / General application

Interested in working at CGTSIM? Make yourself known by sending your CV to: [email protected]

The CGTSIM is seeking candidates for the following position(s):

No job postings at the moment.

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Protection of personal information

The Commission d’accès à l’information du Québec reminds public organizations that certain provisions of the Act to modernize legislative provisions respecting the protection of personal information in the private sector, also known as Bill 25, came into force on September 22, 2022. This reform modernizes the rules protecting personal information in Québec, so that they are better adapted to the new challenges posed by today’s digital and technological environment.

To this end, please consult our new Privacy Policy. Politique de protection des renseignements personnels.

Throughout the year, training on the main issues covered by Law 25 will be deployed to all CGTSIM staff.