Châteauguay property tax

Combined municipal résiduel rate published by the City: 0,5955 $ per 100 $. Bylaw G-086-26, arts. 4-5: taux de base and résiduelle 'fixé à 0,5507 $ par 100 $'; art. 11 CMM 'fixé à 0,0083 $'. The ARTM résiduelle rate (art. 12) does not decode in the bylaw PDF text; 0,0365 comes from the City's 2026 rates page, which publishes 0,5507 + 0,0365 (ARTM) + 0,0083 (CMM) = 'Taux combiné' 0,5955 for the résiduelle category (1 to 6 dwellings); the Budget 2026 book shows only the combined 0,5955 (including ARTM and CMM), consistent with that split. 6 logements et plus: 0,7341 + 0,0486 + 0,0111 = 0,7938. Budget 2026: residential tax rate up 0.77% excluding the mandatory quotes-parts; average-home bill up 3.36%. The ARTM (regional transit authority) and CMM (Communauté métropolitaine de Montréal) amounts are parts of the taxe foncière générale set by the bylaw to fund those quotes-parts; the City publishes their sum as the combined résiduel rate (total left null here because the school tax is listed as a separate component). Not included: flat per-dwelling charges on the municipal bill (2026: eau potable 387 $, assainissement des eaux 426 $, ordures 155 $, volumineux 15 $, matières organiques 115 $, Régie Beau-Château 118 $; piscine 50 $) and sector taxes (répartitions locales, e.g. réseau d’aqueduc RA11), which vary by area. School tax: single Québec-wide rate for the school year beginning July 1, billed separately by the Centre de services scolaire des Grandes-Seigneuries; it applies only to the taxable value above the first 25 000 $, so it cannot simply be added to the municipal rate. Amending bylaw G-086-1-26 (adopted October 19, 2026, in force October 26, 2026) only adds a tax credit for serviced lots that became vacant because of a disaster (art. 9.1); it does not change the residential rates.

Rates as published for the residential class. Bills can also include fixed charges, local improvement levies and utility fees that are not based on assessed value.

Châteauguay's total residential rate of 0.6745% is below the 0.7228% average of the 35 Quebec municipalities we cover. A lower rate does not always mean a lower bill: tax = assessed value × rate, so cities with high home values often have lower rates.

Rates are the residential rates in each city's latest confirmed year. All Quebec municipalities · National rankings

From Châteauguay's official property tax pages (sources 10, 2, 3, 15). Check your bill for the exact amounts and dates.

These programs are run by the city or the province. Eligibility is decided by the organization that runs each one; follow the links for the official rules.

• Crédit d’impôt pour aînés relatif à une hausse des taxes municipales (subvention aux aînés)

  Québec program that helps seniors whose municipal tax bill rose because their home's value increased more than the average; up to 500 $. The City page lists conditions (for the 2025 tax year: age 65 or over at December 31, 2024, family income of 62 900 $ or less for 2024, owner for at least 15 consecutive years, single-dwelling principal residence). If the property qualifies, the City mails the form 'Subvention potentielle relative à une hausse de taxes municipales'; the credit is claimed on the Revenu Québec income tax return. Run by Gouvernement du Québec (Revenu Québec); the City sends the form for eligible properties.

• Grant for Seniors to Offset a Municipal Tax Increase

  A Québec government grant that partly offsets a municipal tax increase caused by a significant rise in the value of a senior's home. For 2026 the potential grant is capped at $500, and it is claimed on form TP-1029.TM-V with the 2025 Québec return.

• Housing Component of the Solidarity Tax Credit

  The housing component of Québec's refundable solidarity tax credit, for owners and tenants of an eligible dwelling. For July 2026 to June 2027 it is $906 for a couple or $746 for a person living alone or a single-parent family, plus $158 per dependent child, before any income reduction.

• Droit de mutation immobilière (taxe de bienvenue) in force 2026

  Québec land transfer duty collected by the City; rates in force since January 1, 2026: 0,5% up to 62 900 $, 1% from 62 900 $ to 315 000 $, 1,5% from 315 000 $ to 615 600 $, 3% above 615 600 $. A droit supplétif of 200 $ (property of 40 000 $ or more) applies to some exempt transfers, but the City charges none on transfers to a spouse or children after a death.

• Tarif Régie Beau-Château in force 2026

  Flat special charge of 118 $ per dwelling on the 2026 municipal bill for the Régie intermunicipale Sports et loisirs Beau-Château (Sportplex, including the new indoor aquatic complex); 61 $ in 2025.