Moving from Montreal to Austin: Taxes, AI, and the Zero-Income-Tax Corridor

Montreal to Austin runs on the same talent pipeline that built Montreal’s AI reputation in the first place. Mila, the deep learning institute built around Yoshua Bengio, and the Element AI alumni network that scattered across the industry after the company wound down, have spent a decade feeding researchers into labs that now recruit out of Austin directly. Samsung AI, Google Brain Montreal, and a growing Tesla, Apple, Oracle, and Meta presence in Texas have turned the corridor into a two-way street rather than a one-off relocation. Ubisoft Montreal, one of the largest game studios in the world, sends its own steady stream into Austin’s gaming and interactive-entertainment scene. 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 ever enters the picture.

Why does this corridor run on AI, not just rate?

Because Montreal built the researcher pipeline before Austin needed one. Mila trained a generation of deep learning researchers under Yoshua Bengio, and Element AI, though wound down as a company, spread its staff across the labs and startups now doing the hiring. Samsung AI Montreal, Google Brain Montreal, and Microsoft Research Montreal all run as feeder labs, and a few years at one of them reads as a known quantity to an Austin recruiter the same way a Mila credential reads in San Francisco.

• Ubisoft Montreal adds a second, parallel lane: a two-decade pipeline of game developers and technical artists into Austin’s own studios, several of them built or expanded by former Ubisoft staff.
• Tesla’s gigafactory, Apple’s second campus, Oracle’s relocated headquarters, and Meta’s Austin offices round out a broader tech pull that has little to do with the tax rate and everything to do with where the jobs actually are.

Why does Quebec’s rate drop so far in Austin?

Because Texas doesn’t run a second income tax system at all, and state law bars any Texas city, Austin included, from creating one of its own. Quebec’s five brackets top out at 25.75% provincially, the steepest top bracket of any province, with no separate surtax layered on top since the bracket itself already does that work; combined with federal tax that reaches roughly 53.31%. Texas charges nothing at the state or municipal level, so the entire provincial layer disappears going forward, not just for salary but for any equity or bonus income too.

	Montreal / Quebec	Austin / 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 Austin
Property tax (effective rate)	Below 1% of assessed value in most Quebec municipalities	1.8% to 2.2% in Travis County
Health insurance	RAMQ, provincial, notice-based wind-down	No state program; employer plan or ACA marketplace
RRSP treatment	Separate provincial withholding while resident	Treaty deferral, no state addback once non-resident

Which authorities close out the departure year?

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.

• The third is easy to miss: anyone who has been billing consulting income or drawing a salary through a Quebec-incorporated company also has a Health Services Fund (QHSF) account, the employer-side payroll contribution, roughly 1.25% to 4.26% of payroll depending on size, that funds the province’s health system. That account runs on its own remittance schedule and needs its own wind-down, separate from both the CRA and Revenu Québec filings.

• A salaried researcher moving on an offer letter usually only deals with the first two; a researcher who spun a side consulting arrangement or a stake in a Montreal AI startup into a small QC corporation needs all three closed before the file is actually done. Only after that does the IRS become the new authority on the return, since Texas has no state filing to add.

• 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.

What’s different about Quebec’s RRSP withholding?

Quebec is the one province where an RRSP withdrawal, while you’re still resident, carries two separate withholding lines instead of one. Because Quebec collects its own provincial tax rather than letting the CRA remit a combined federal-and-provincial amount the way every other province does, the federal withholding rate on a Quebec resident’s RRSP withdrawal is lower than elsewhere in Canada, with a separate Quebec provincial withholding layered on top to make up the difference. That distinction disappears the moment residency actually ends.

• A post-departure withdrawal is a non-resident withdrawal, taxed only under the treaty’s non-resident withholding, 25% lump sum or 15% periodic, with Quebec no longer part of the transaction at all. Texas then adds nothing to that picture, since there’s no state-level tax competing for the same credit the way there is in California or New York.

What happens to QST once you’re in Texas?

It stops applying to your own purchases the day Quebec residency ends, and Texas replaces it with a noticeably lower combined rate. QST runs 9.975%, stacked with 5% GST to about 14.975% combined, one of the higher consumption tax burdens in North America. Austin’s combined sales tax runs up to 8.25%, the 6.25% state rate plus local additions, a real drop on everyday spending even before the income tax side is counted.

• A Quebec-incorporated business still registered for QST needs a formal deregistration with Revenu Québec, separate from the personal departure filings and separate again from closing out a QHSF account.

Where does the Ubisoft-to-Austin pipeline lead?

Straight into Austin’s own gaming and interactive studios, several of them staffed at senior levels by former Ubisoft Montreal developers, producers, and technical artists. The relocation logic mirrors the AI corridor almost exactly: a recognizable Montreal credential, whether it’s a Mila thesis or a shipped Ubisoft title, reads as a known quantity to an Austin studio doing the hiring.

• Equity and bonus structures differ by employer, RSUs at the larger tech companies, profit-share or milestone bonuses at game studios, but none of it carries a state withholding bite in Texas the way the same comp would in California.

What happens to RAMQ once you’re in Texas?

It winds down on notice, not automatically. RAMQ, Quebec’s health insurance board, 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 to happen on its own timeline. 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 before the RAMQ tail runs out.

How does Travis County property tax compare?

Higher on an ongoing basis, with no Quebec-style transfer tax on the way in. Travis County, plus whichever school district and city levy applies, typically brings the effective combined property tax rate to somewhere between 1.8% and 2.2% of assessed value, well above most Quebec municipal rolls. Williamson County, home to Round Rock and Cedar Park, runs similar territory at somewhat lower average home prices.

• There is no equivalent to Quebec’s welcome tax on the buy side; 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.

Where do Montreal AI movers settle in Austin?

Mostly by household stage and commute, not by employer. Researchers and engineers without kids tend to land Downtown or in East Austin, close to the tech campuses and the AI-lab cluster. Families lean toward Mueller for its newer housing stock close in, or Cedar Park, Round Rock, and Pflugerville for school districts and more space at a lower price point. Higher-end movers, often later-career researchers or founders, gravitate to Westlake or Bee Cave, both carrying some of the highest home values in the metro.

• None of it changes the tax analysis; the property tax rate runs with the taxing jurisdiction, not the neighborhood’s reputation.

What should I do next?

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 Quebec to Texas, the province-level version of this corridor
• Moving from Quebec to the US, the general Quebec departure mechanics
• Moving from Montreal to San Francisco, the other AI and deep learning corridor
• Moving from Montreal to New York, the finance version of this corridor
• Moving from Montreal to Chicago, the flat-tax Midwest comparison
• Moving from Montreal to Boston, the biotech and academic corridor
• Moving from Montreal to Miami, the largest single rate-drop corridor from Quebec
• Moving from Montreal to Washington DC, the international organizations corridor
• Moving from Montreal to Los Angeles, the entertainment-industry version
• 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 Canadian immigrant
• Provincial health insurance when leaving Canada
• State income tax for cross-border filers
• Toronto to Austin, the sibling corridor from Ontario
• Calgary to Austin, the sibling corridor from Alberta
• Vancouver to Austin, the sibling corridor from BC
• Montreal to Denver, the AI and outdoor corridor into Colorado

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