Moving from Montreal to Dallas: Taxes, Tech, and the Triple Filing

Montreal to Dallas runs on four talent pipelines that rarely get grouped together. Mila and the Element AI alumni network feed AI and deep-learning talent into Texas Instruments, Samsung’s Austin R&D group (which keeps satellite offices across the DFW area), and AT&T. Bombardier, CAE, and Pratt & Whitney Canada send aerospace engineers into Lockheed Martin’s Missiles and Fire Control division in Grand Prairie, Bell Textron in Fort Worth, and Raytheon. Montreal’s fintech scene routes into Goldman Sachs’ DFW office, Charles Schwab in Westlake, and Fidelity, while Big Four alumni from the city’s Montreal offices land in corporate HQ roles at AT&T, CBRE, and Kimberly-Clark. None of that changes what happens on the way out. Quebec’s combined top rate runs near 53.31%, the steepest in the country, and it applies in full on a departure return before Texas’s zero income tax ever enters the picture.

Why does Quebec’s tax rate collapse in Dallas?

Because Texas doesn’t run a second income tax system at all, and no city inside it, Dallas included, is allowed to layer one on top. Quebec’s five brackets top out at 25.75% provincially, combining with federal tax to a top marginal rate near 53.31%, the steepest of any province. Texas charges nothing at the state or municipal level, so the entire provincial layer disappears going forward, not just on salary but on RSUs, bonuses, and consulting income too.

	Montreal / Quebec	Dallas / Texas
Provincial / state income tax	Up to 25.75%	None
City income tax	None	None (barred statewide)
Combined top marginal rate	About 53.31%	About 37% (federal only)
Sales tax	QST 9.975% + GST 5%, about 14.975%	6.25% state, up to 8.25% combined in Dallas
Property tax (effective rate)	About 0.7% to 1.0% of assessed value in most Quebec municipalities	1.8% to 2.2% in Dallas County
Business tax	Quebec corporate tax plus QHSF payroll contribution	No income tax; franchise tax 0.375% to 0.75% on gross receipts above roughly $2.47M
Estate tax	None (deemed disposition at death instead)	None at the state level; federal estate tax can still apply

Which authorities close out a Montreal departure?

Three Canadian-side authorities, before the IRS or Texas ever enter the file. The CRA takes the final federal T1. Revenu Québec takes the final TP-1, covering worldwide income to your departure date and Quebec-source income after it, and issues Relevé slips, Relevé 1 for employment and Relevé 3 for investment income, in place of the T4 and T5 every other province uses.

• Anyone billing consulting income or drawing salary through a Quebec-incorporated company also carries a Health Services Fund (QHSF) account, the employer-side payroll contribution, roughly 1.25% to 4.26% of payroll, that needs its own wind-down separate from the CRA and Revenu Québec filings, and the federal departure mechanics, including Form T1161 and T1243, apply the same way regardless of destination; the full sequence sits in the leaving-Canada checklist.

Why does Montreal’s AI talent land in Dallas?

Because the DFW area built a chip and telecom research base wide enough to absorb it. Mila and the Element AI alumni network have spent a decade training deep-learning researchers who now show up inside Texas Instruments, inside Samsung’s Austin R&D group’s DFW satellite offices, and on AT&T’s core research teams. A Mila credential reads the same to a recruiter there as it does in Toronto or the Bay Area.

Where does the Bombardier-to-Lockheed pipeline lead?

Straight into the aerospace and defense cluster spread across Grand Prairie and Fort Worth. Engineers with Bombardier, CAE, or Pratt & Whitney Canada on their resume turn up at Lockheed Martin’s Missiles and Fire Control division in Grand Prairie, at Bell Textron’s helicopter plant in Fort Worth, and at Raytheon, all of which recruit propulsion, avionics, and systems talent out of the same Quebec aviation base.

Why do Montreal fintech alumni move to Dallas?

Because Dallas-Fort Worth has quietly become a back-office and trading hub for the same firms Montreal’s fintech scene already feeds. Goldman Sachs runs a sizable DFW office, Charles Schwab anchors its national operations out of Westlake, and Fidelity keeps a major campus in the metro, all recruiting out of the risk, quant, and product roles Montreal’s banks and fintech startups have trained for years. Big Four alumni from the same city land alongside them, in corporate finance and internal audit seats at AT&T, CBRE, and Kimberly-Clark.

What happens to RRSP and TFSA after the move?

The RRSP lands in about as clean a position as any US destination offers, because Texas has no state return to layer an addback onto. The treaty deferral holds automatically going forward, and with no state income tax return in the picture, there’s no separate state-level RRSP add-back to plan around the way there would be in a state that taxes RRSP growth.

• The TFSA doesn’t get any easier just because Texas has no income tax; it’s still an ordinary taxable account to the IRS and still carries the same foreign-trust reporting exposure, including Form 3520 and 3520-A, that applies in every US state, so plan the closure or drawdown before the move rather than after.

What happens to RAMQ coverage once you’re in Texas?

It winds down on notice, not automatically. RAMQ runs a reciprocal-coverage tail of roughly three months after you notify it of a permanent departure, and that notice has to be filed directly rather than assumed. Texas has no state health program to replace it; the move counts as a Special Enrollment Period event on the federal marketplace, giving 60 days from the move date to enroll in an employer plan or healthcare.gov coverage.

How does Dallas County property tax compare to Montreal?

Higher on an ongoing basis, with no Quebec-style welcome tax on the way in. Dallas County, plus whichever school district and city levy applies, typically brings the effective combined property tax rate to 1.8% to 2.2% of assessed value, well above most Quebec municipal rolls, which usually sit between 0.7% and 1.0%.

• There’s no Texas equivalent to Quebec’s welcome tax on purchase; the closing cost that replaces it is a small documentary recording fee, and a Texas homestead exemption can reduce the ongoing bill on a primary residence once a Texas ID and proof of occupancy are in place.

Does Texas charge any estate tax?

No, and that’s a real structural difference from what Canada does at death. Texas has no state estate tax at all, and the federal estate tax exemption is large enough that most movers never approach it. Canada doesn’t have an estate tax either, but it taxes death itself through deemed disposition, treating the entire estate as sold at fair market value the day before death.

• The planning question isn’t which country’s rule is worse; it’s making sure appreciated RRSP, non-registered, and real property positions are mapped against both the Canadian deemed-disposition rule and the US federal exemption before, not after, a cross-border estate becomes the subject of two countries’ rules at once.

Where do Montreal movers settle in Dallas?

Mostly by employer cluster, the same way they do in every DFW corridor. Tech and semiconductor hires lean toward Plano, Richardson, and North Dallas near Texas Instruments and AT&T. Aerospace engineers land closer to Grand Prairie and Fort Worth, finance hires gravitate to Westlake and Las Colinas, and families trade Montreal’s winters for the Frisco and McKinney suburbs, chasing school districts more than any single employer.

What should I do before the move?

Pin the departure date first, since it fixes the deemed-disposition rate and starts both the RAMQ and QHSF clocks. Pull a full year of RRSP statements and, if any consulting or side-company income runs through a Quebec corporation, get that entity’s QST and QHSF accounts ready to close alongside the personal TP-1 and T1. Then line up the Texas side: a part-year federal return, US health coverage inside the 60-day marketplace window, and a homestead application once the new home is bought.

• Moving from Canada to Texas, the parent guide for this corridor
• Moving from Quebec to Texas, the province-level version
• Moving from Quebec to the US, the general Quebec departure mechanics
• Moving from Toronto to Dallas, the tech and finance sibling corridor
• Moving from Calgary to Dallas, the energy and finance sibling corridor from Alberta
• Moving from Montreal to Houston, the aerospace and energy sibling corridor
• Moving from Montreal to Austin, the other AI and tech sibling corridor into Texas
• Canada’s departure tax, T1161 and T1243
• Leaving Canada permanently: the checklist
• RRSP and TFSA after moving to the US
• The US-Canada tax treaty explained
• Your first US tax return as a new immigrant
• Montreal to Nashville, the healthcare corridor into Tennessee
• Montreal to Charlotte, the banking and aerospace corridor into North Carolina
• Montreal to Philadelphia, the pharma and city-wage-tax corridor

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.