How much did the 2026 Montreal assessment roll go up vs 2022-2024?

The 2026 Montreal assessment roll shows a 32% average increase vs the 2022-2024 roll, per City of Montreal data. Increases vary widely by borough: some Plateau, Rosemont and Sud-Ouest sectors exceed 40%, while Anjou or Saint-Léonard show ~25%. Single-family homes generally see the largest increases, followed by plexes and condos.

Does a roll increase automatically raise my municipal taxes?

Not automatically. The City adjusts the tax rate to partially neutralize the global roll increase. If your value rises 32% and the municipal average is also 32%, your taxes stay flat. If your increase exceeds the average (e.g., +40%), your taxes go up. If it's lower (e.g., +25%), your taxes go down. Rule of thumb: what counts is the gap between your personal increase and the global average.

How do I challenge an assessment that seems too high?

You have until April 30 of the first year of the new roll to file a review request with the City. Cost: $75 for a single-family residence, $300 for a multi-unit (2026 fees). You must provide recent comparable sales (~12 months prior to July 1 of the roll year) showing a lower value. If review is denied, you can take the case to the Tribunal administratif du Québec (TAQ), real estate division, within 60 days.

Why is my municipal assessment lower than APCIQ market value?

The municipal assessment is based on value as of July 1 of the year preceding the roll filing (so July 1, 2024 for the 2026 roll), while APCIQ market value reflects current real transactions. In 2026, the Montreal single-family median per APCIQ is $652,250 (March 2026), while many municipal assessments in the new roll still sit 10 to 18% below that level. The comparison factor (CFM) partially corrects this gap for fiscal use.

Does the new 2026 roll affect the sale of my house?

Indirectly. The municipal assessment is not the sale price — buyers and their brokers rely on recent comparable sales (APCIQ method). But it influences perception: a buyer may hesitate when the municipal assessment is 30% below the asking price. The Montreal 2026 comparison factor (published by the City) lets you adjust the assessment to equivalent market value. On courticonnect.ca, the estimator integrates this correction directly.

Montreal Assessment Roll 2026 — Increases and Property Tax Impact

The deposit of the new 2026 property assessment roll caused waves in Montreal: +32% on average compared to the 2022-2024 roll. The legitimate question owners are asking: « Will my municipal taxes really go up that much? » The short answer is no, and our municipal assessment vs market value guide sets the foundation. This article details the real impact.

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1. Why +32% on average in 2026

In Quebec, assessment rolls are triennial: each roll covers 3 years. The previous roll reflected value as of July 1, 2021 (for 2022-2024). The new 2026 roll reflects value as of July 1, 2024. Between those two dates, the Montreal real estate market saw:

Sustained single-family home increase (+25 to 40% by borough)
Plex boom (+30 to 45% by area, plex median $855,000 per APCIQ March 2026)
Condo stabilization then slight rise (+20 to 28%)

The weighted average yields +32% across the City’s entire real estate stock.

2. Roll increase ≠ tax increase

The City adjusts the tax rate to partially neutralize the global increase. Here’s the rule:

Simplified formula

Personal increase = average (32%) → taxes stable
Personal increase > average (e.g., +40%) → taxes up (~+6%)
Personal increase < average (e.g., +25%) → taxes down (~−5%)

The relative gap matters more than the absolute percentage. For Plateau-Mont-Royal (~+38% on average), single-family homes will pay ~+5% in municipal taxes in 2026 vs 2025.

3. Worked example — Rosemont single-family

2022-2024 roll assessment	$485,000
2026 roll assessment (+38%)	$669,300
2025 rate (~0.7235% Rosemont)	$3,510/year
2026 adjusted rate (~0.5810%)	$3,889/year
Real tax increase	+$379/year (+10.8%)

The 38% roll increase translates to ~+11% in taxes — not 38%. The City’s rate adjustment absorbs two-thirds of the nominal increase.

4. Municipal assessment vs market value — the gap

The 2026 roll reflects value as of July 1, 2024. APCIQ market value March 2026 reflects recent sales. Typical 2026 gaps:

Montreal single-family: average roll ~$570,000 vs APCIQ median $652,250 (+14.4%)
Montreal plex: average roll ~$755,000 vs APCIQ median $855,000 (+13.2%)
Montreal condo: average roll ~$378,000 vs APCIQ median $420,000 (+11.1%)

The comparative factor published by the City is 1.00 in 2026, for the whole city: it therefore does not correct this gap, which comes from price growth since the roll’s reference date, July 1, 2024. Our 2026 comparative factor guide details how to use it.

5. How to challenge — 2026 procedure

Deadline: April 30 of the first year of the roll (so April 30, 2026 for the 2026-2028 roll).
Filing fee: $75 single-family, $300 multi-unit (2026 rate).
Required evidence: 3 to 5 recent comparable sales (~12 months before July 1, 2024) showing a lower value.
Decision time: 4 to 8 months on average for the City review.
TAQ recourse: if denied, 60 days to escalate to the Tribunal administratif du Québec (~$70 fee).

Compare your 2026 roll to market value

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Montreal Assessment Roll 2026: Increases and Impact on Your Property Taxes