Welcome Tax Calculator Saint-Constant 2026
The exact amount of your transfer duties based on your city's official rate grid, first-time buyer credit included, and city-to-city comparison.
Calculator 2026
Estimate your real estate transfer taxes
2026 First-Time Buyer Tax Credit
Since April 2026, Quebec offers a refundable tax credit covering up to $5,875 of the welcome tax for eligible first-time buyers. The credit reimburses 100% of the tax on the first $5,000, then 25% of the slice up to $8,500. Three conditions apply: you must not have lived in a dwelling owned by you or your spouse during the year of acquisition or the 4 preceding calendar years, the property must be your principal residence, and the dwelling must be eligible. Retroactive to January 1, 2026; advance payment available from October 2026 for credits exceeding $1,000.
→ Read the full welcome tax credit guideWhen the median sale price already clears the top-bracket step
The detached-home segment in Saint-Constant has crossed into territory where the municipal grid hits its full slope. According to Centris real-estate statistics for Saint-Constant, the single-family median for Q4 2025 came in at $607,500 (+4% year over year) and sits at $602,875 over the rolling four quarters (+8%). The practical consequence is the same on either reading: the typical negotiated price clears the reference threshold where the top municipal bracket kicks in, so the portion taxed at the upper rate is no longer the edge case — it is the norm.
A snapshot of the Saint-Constant market
The pace of transactions confirms the pressure. In Q4 2025, 51 single-family homes changed hands in 24 days on market on average — 26 days shorter than a year earlier. Active single-family listings dropped 13%, a signal that inventory clears quickly. The condominium market is thinner but firms up too, with a rolling four-quarter median of $410,437 (+7%) per Centris. Total residential volume reached $41.1 million for the quarter — a suburb growing into its skin: population already cleared 29,954 at the 2021 census (+10% in five years), per the community profile published by Centris. That intensity is why the calculator above earns its place before the offer is signed, not after.
What moves the amount, and how the grid compares
As elsewhere in Quebec, the welcome-tax base is the highest of three figures: the price actually paid, the amount listed in the deed of sale, or the market value drawn from the assessment roll (the roll value multiplied by the comparative factor for the year). For 2026, the City confirms the comparative factor is set to 1, which keeps the reading simple — roll value equals market value. To check yours, run the search on Acceo's ImmoNet service, reachable from the City's Rôle d'évaluation page. On the rate side, Saint-Constant keeps the classic four-bracket structure with a direct jump to the top municipal bracket as soon as the reference threshold is crossed — the same mechanic Sainte-Catherine uses within the MRC de Roussillon. Châteauguay, by contrast, pushes the top-bracket threshold materially further out: on the same home that clears the local median by a clear margin, the climb is later and gentler on the Châteauguay side, more immediate and steeper on the Saint-Constant side. Run the same negotiated price through the calculator above to see the gap.
Municipal supports, the MRC de Roussillon and the annual taxation by-law
The City does not run a municipal credit aimed at the welcome tax for new owners. The local fiscal frame rests on the 2026 annual taxation by-law (EEV1905-26), which sets the year's rates and tariffs, and on the City's welcome-tax page summarizing the base and brackets in force. At the regional level, the MRC de Roussillon runs several eco-responsible subsidies open to Saint-Constant residents — cloth diapers, durable feminine-hygiene products, backyard composters — applied for online after moving in. They land at a helpful moment in the post-closing budget even though none of them touches the welcome-tax invoice directly.
Payment, timing and the provincial home-access credit
The annual property-tax bill is mailed before March 1 and payable in six instalments for 2026 (30 March, 14 May, 29 June, 13 August, 28 September and 12 November) — a longer schedule than most neighbouring South-Shore cities offer. The welcome-tax notice is mailed separately, after the sale is published at the land register, and remains payable in one instalment, due 30 days after issue — earmark the amount in your budget for the weeks following closing, as interest at 10% and a penalty of 5% apply on overdue balances. To settle, the City's tax-payment page lists the accepted channels: financial institution, in-person counter, credit-card payment through Transphere, or the secure drop box outside city hall, accessible day and night. Your notary will confirm at signing whether you qualify for the provincial home-access tax credit, framed by the Act respecting duties on transfers of immovables (CQLR, c. D-15.1).
Useful resources and contacts
Before paying, cross-check your estimate against the City's Finance and taxation page and the notice received in the mail.
- City hall: 147, rue Saint-Pierre, Saint-Constant (Quebec) J5A 0W6.
- Taxation desk: 450 638-2010, ext. 7556, or by email at taxation@saint-constant.ca.
- Assessment roll: public look-up through Acceo's ImmoNet service or PG Solutions' professional portal; revisions through the Service de l'évaluation.
- Espace citoyen: citoyen.saint-constant.ca for account follow-up and online requests.
- MRC de Roussillon subsidies: eco-responsible programs open to residents.
The calculator above gives a working estimate for budgeting; the official notice issued by Ville de Saint-Constant remains the document of record for final payment.
What is the transfer tax?
Commonly called the "welcome tax", the real estate transfer tax is a mandatory municipal tax collected when a property changes hands in Quebec. It is always paid by the buyer, never the seller, to the municipality where the building is located, in the months following the signing at the notary.
Is the welcome tax paid every year?
No. The transfer duty is paid only once, when the property changes hands. Do not confuse it with municipal and school taxes, which recur every year: the welcome tax is a single bill, sent by the municipality after the sale is registered in the Land Register.
How is the welcome tax calculated?
The calculation is based on the highest amount among the following:
- The purchase price paid for the building;
- The amount of the consideration entered in the deed of sale;
- The market value of the building, meaning the value entered in the municipal assessment roll multiplied by the city's comparative factor.
This amount is then subject to a progressive rate scale that varies by municipality. In 2026, the first bracket (up to $62,900) is taxed at 0.5%, the next ones at 1% and then 1.5%, and several large cities add higher brackets (up to 4% in Montreal).
New construction: the tax base is the price before GST and QST.
Calculation example (2026)
For a property purchased in Montreal at a price of $600,000 (tax base):
- $0 to $62,900 (0.5%) :$314.50
- $62,900 to $315,000 (1%) :$2,521.00
- $315,000 to $552,300 (1.5%) :$3,559.50
- $552,300 to $600,000 (2%) :$954.00
- Total to pay:$7,349.00
Calculated with the official rate grid in force in Montreal. Source: Ville de Montréal
Who is exempt from the welcome tax?
The Act respecting duties on transfers of immovables provides exemptions. The most common cases:
- Transfer between spouses: married, in a civil union, or common-law partners who have lived together for at least 12 months (in case of separation, the transfer must occur within 12 months of the end of the union);
- Transfer in the direct line: between parents and children or grandparents and grandchildren (but not between siblings);
- Tax base under $5,000;
- Transfer to a corporation in which the transferor holds at least 90% of the voting shares.
Even when exempt, the municipality may charge a special duty, generally capped at $200. The exemption must be recorded in the notarized deed: your notary claims it for you.
Not exempt? The 2026 first-time buyer tax credit can still refund up to $5,875 of your tax. See the first-time buyer credit guide
Why is it called the "welcome tax"?
The official name is "duties on transfers of immovables", introduced by a 1976 Quebec law allowing municipalities to collect this duty. The nickname is often attributed to Jean Bienvenue, Minister of Municipal Affairs at the time ("bienvenue" means "welcome" in French), but the expression mostly owes its success to its irony: a "welcome" billed to the new owner. Both terms refer to exactly the same tax.
Calculators for nearby cities
Selected year: 2026