Property taxes · Dorval · 2026
How much are the taxes on a house in Dorval in 2026? The average bill, increase and rate published by the city in its budget, what the assessment roll changes, and the 2026-2027 school tax. Official figures, sources cited.
In Dorval, the city announces a 0.9% increase in the residential tax bill for 2026, without publishing an average bill in dollars. The residential general property tax rate is $0.3964 per $100 of assessment ($0.4196 in 2025). 2026 is the first year of a new assessment roll: values went up, the rate was adjusted, and it is the bill, not the rate, that tells you what you pay. City figures, checked on October 19, 2026.
The short answer
In Dorval, the city announces a 0.9% increase in the residential tax bill for 2026, without publishing an average bill in dollars. The residential general property tax rate is $0.3964 per $100 of assessment ($0.4196 in 2025). 2026 is the first year of a new assessment roll: values went up, the rate was adjusted, and it is the bill, not the rate, that tells you what you pay.
The 2026 tax bill in Dorval
The mayor announces a 0.9% increase in the average residential tax bill for single-family homes in 2026 (0.5% for affordable housing), without publishing the amount.
Increase announced by the city for 2026: +0.9%. Each city measures its increase its own way (with or without water, waste collection or special taxes): compare the bills, not just the percentages.
For reference, a house sold for $712,500 at the 2026 median on Centris (92 sales). The municipal assessment, used to calculate taxes, often differs from the sale price.
The property tax rate in Dorval
| Rate per $100 of assessment | 2026 | 2025 | Rate change |
|---|---|---|---|
| General property tax, base residential rate | $0.3964 | $0.4196 | -5.5% |
Other rates: By-law RCM-108 sets for the residual category: 1 to 5 dwellings $0.3964, 6 to 41 and 42 to 77 dwellings $0.3909, 78 to 149 dwellings $0.3925, 212 dwellings or more $0.5057 per $100. The agglomeration share ($102.4M in 2026, +17%) is an expense in the Cité's budget, funded by the property tax, and not billed separately.
Fixed fees: No fixed residential fee for water or waste collection appears in the 2026 budget sent to the MAMH (fee lines empty); to be confirmed.
Careful with the lower rate. The rate drops 5.5% because the new roll raised assessments: the city adjusts the rate to collect its revenue. A lower rate after a new roll is not a tax cut.
The assessment roll in Dorval
New 2026-2027-2028 three-year roll of the Montréal agglomeration, in effect on January 1, 2026 (1st year).
Calculating the taxes on a house in Dorval
The general property tax is calculated as: municipal assessment × rate ÷ 100. Example: a house assessed at $500,000 would pay $1,982 in general property tax at the 2026 rate of $0.3964. This is a sample calculation, not the actual bill: add the fees (water, waste collection), special taxes and, where applicable, sector taxes. The actual bill for an address is on the city's online assessment roll and on the seller's latest tax bill: ask for it before making an offer.
The 2026-2027 school tax
The school tax is not set by the city. Since 2020-2021, the rate is the same everywhere in Quebec: $0.07899 per $100 of standardized assessment for 2026-2027 ($0.08423 in 2025-2026), and the first $25,000 of value is exempt. It is calculated on the standardized value, which can differ from the roll value. Example: for a standardized value of $500,000, the 2026-2027 school tax would be about $375.
Before buying in Dorval
- Ask for the seller's latest tax bill and the roll assessment of the address: it is the only exact figure for your budget.
- Check the roll year. After a new roll, the assessment can jump: next year's bill will not be this year's.
- Count the sector fees (water, sewers, garbage, local improvement taxes): two houses of the same value in the same city can pay different amounts.
- Include taxes in the mortgage calculation. The lender includes them in your debt ratios: the welcome tax is paid once, property taxes every year.
The other costs of a house in Dorval:
- Welcome tax on the median house in Dorval
- Home prices in Dorval, ten years
- Buying an Airbnb in Dorval: the rules
Each page starts from actual Centris sales or official documents, aggregates only.
Coming from Montreal?
Prices, monthly mortgage payment and welcome tax compared with Montreal.
Frequently asked questions
How much are property taxes in Dorval in 2026?
The city does not publish an average bill in dollars for 2026; it announces a 0.9% increase.
What is the property tax rate in Dorval in 2026?
$0.3964 per $100 of assessment for the base residential general property tax in 2026, versus $0.4196 in 2025.
Are taxes going up in Dorval in 2026?
Yes in dollars for most owners, even if the rate drops: 2026 is the year of a new roll, assessments went up and the city adjusted its rate.
What is the 2026-2027 school tax rate?
$0.07899 per $100 of standardized assessment in 2026-2027, everywhere in Quebec, after an exemption on the first $25,000.
All cities side by side: 2026 property taxes in 72 cities.
Sources
City documents consulted on October 19, 2026:
- Règlement RCM-108 sur la taxe foncière générale 2026 (adopté le 19 décembre 2025) (official source, in French, 2025-12-19)
- Budget 2025 de la Cité de Dorval (formulaire MAMH) (official source, in French, 2024-12)
- Allocution du maire Marc Doret sur les prévisions budgétaires 2026 (official source, in French, 2025-12-15)
- Dépôt des rôles d'évaluation foncière de l'agglomération de Montréal pour 2026-2027-2028 (official source, in French, 2025-09-10)
School tax (in French):
- CGTSIM, Comprendre la taxe scolaire (2026)
- CGTSIM, Comprendre la taxe scolaire (2026)
- CGTSIM, Comprendre la taxe scolaire (2026)
Prices: Centris (Matrix), median sale price of single-family homes, 2026 since January; compiled by the Loaa & Manseur team, aggregates only. Rates, bills and increases are those published by the city; sample calculations are illustrations. This page informs: it is neither tax advice nor an appraisal.
Also available in French: version française de ce guide.
Published September 7, 2026 by the Loaa & Manseur team, the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 according to the official RE/MAX ranking. Tell us about your project.