Moving from Montreal to Chicago: Taxes, TP-1, and Three Authorities
Montreal to Chicago is a real corridor, not a generic Quebec-to-US move. Montreal’s finance and asset management sector feeds Chicago’s derivatives and trading world directly, the same pipeline that runs into CME Group, Northern Trust, and Morningstar. Consulting firms with Montreal offices rotate people through Chicago the same way they rotate them through New York. Unlike a move to Florida or Texas, this one keeps a state income tax in place, just a much smaller one, so the planning work is about sequencing three Canadian and provincial filings correctly before the lower ongoing rate is actually yours.
Quebec’s combined top marginal rate runs about 53.31%. Illinois charges a flat 4.95% on all taxable income, and Chicago adds no city income tax on top of it, unlike New York City. That’s a large drop, but the departure year still runs through the CRA, Revenu Quebec, and the IRS before Illinois enters the picture, and Quebec issues Relevé slips instead of T4s and T5s. Quebec’s 25.75% top provincial bracket, the steepest in Canada, applies to the deemed-disposition gain on the way out regardless of where you land.
Why does this corridor exist?
Finance is the main driver. Montreal’s asset management shops, trading desks, and insurance companies feed Chicago’s derivatives and commodities world, built around CME Group, in the same way Toronto and Calgary do. Consulting is the second lane: McKinsey, BCG, and Bain all run Chicago offices that draw on Montreal-trained analysts and associates. A smaller but steady flow comes from Morningstar and Northern Trust, both of which recruit finance and data talent out of Quebec’s universities. None of these lanes depend on French-language skill, since the receiving offices run in English day to day.
How much does the tax rate actually drop?
By a lot, more than most Canada-to-US corridors show. Quebec’s combined federal-plus-provincial top marginal rate lands around 53.31%. Illinois taxes all income at a flat 4.95%, and Chicago charges no city income tax at all, unlike New York City’s added 3.876%. Federal US tax still applies on top of the state rate, so the real comparison lands closer to 42% combined at the top end, but that’s still an 11-point gap from Quebec’s number, larger than the Montreal-to-New York corridor shows.
| Montreal / Quebec | Chicago / Illinois | |
|---|---|---|
| Combined top marginal rate | ~53.31% | ~42% (Illinois flat 4.95% plus federal) |
| City/local income tax | None (provincial only) | None in Chicago |
| Sales tax | QST 9.975% + GST 5%, ~14.975% combined | ~10.25% combined |
| Separate tax authority | Yes, Revenu Quebec | No, runs through Illinois Department of Revenue |
| Property tax | ~0.8% to 1.2% (Montreal) | ~1.5% to 2.5% (Cook County) |
Which three tax authorities apply in the move year?
The CRA, Revenu Quebec, and the IRS, and Illinois only shows up after those three are settled. The final TP-1 goes to Revenu Quebec, covering worldwide income to your departure date and Quebec-source income after that. The final T1 goes to the CRA covering the same period federally. The IRS then gets a US return, dual-status or full-year under the first-year election. Illinois adds a part-year resident return once you count it, for a total of four filings from one move, none of which taxes the same dollar twice.
What replaces my T4 and T5 on the way out?
Relevé slips, issued on their own schedule. Quebec issues a Relevé 1 for employment income, the provincial counterpart to the T4, and a Relevé 3 for investment income, the counterpart to the T5. Your Montreal employer and your bank issue the federal slip and the Quebec slip separately, often weeks apart, and a partial-year employer needs to issue a partial-year Relevé 1 alongside the partial-year T4.
How steep is Quebec’s departure tax before Illinois?
Steeper than anywhere else in Canada. Quebec’s top provincial bracket hits 25.75% on income over roughly $126,000, the highest top provincial rate in the country, and it applies to the Quebec-source portion of any deemed-disposition gain under ITA 128.1(4) the same way it applies to ordinary income. The rate the gain gets taxed at provincially is the highest of any Canadian departure. The departure tax forms guide covers the T1161 and T1243 mechanics, unchanged by destination.
What happens to RAMQ and my RRSP?
RAMQ coverage doesn’t end automatically; notify the Regie de l’assurance maladie du Quebec directly once your departure date is set, since provincial health coverage runs on its own notice requirement separate from anything filed with Revenu Quebec or the CRA. Your RRSP carries over the same way it would for any departing Canadian, and Illinois follows the federal treaty treatment with no state-level addback of untaxed RRSP growth.
Illinois also has a retirement income exemption: RRSP and RRIF distributions reported on the federal return have historically qualified as exempt from the flat state tax, a genuine advantage over states like California. TFSA income doesn’t get that treatment and flows through to Illinois at the flat rate, which is why the RRSP and TFSA guide recommends closing the TFSA before departure.
What happens to a Quebec business on the way out?
QST deregistration is the step that gets missed. A Montreal-based sole proprietor or corporation registered for QST needs to formally deregister with Revenu Quebec once the business stops operating in the province, separate from any GST deregistration filed with the CRA. Leaving a QST account open after the business has moved creates ongoing filing obligations for a business that no longer has Quebec-source sales.
If a Canadian corporation stays open while you live in Illinois, US federal reporting (Form 5471, GILTI, Subpart F) applies, and any income that flows to you personally lands on the Illinois return at the flat rate. Illinois’ pass-through entity elective tax lets owners of an Illinois LLC or S-corp deduct state tax on the federal return above the SALT cap, an option Quebec has no direct equivalent for.
How does everyday cost of living compare?
Sales tax drops by close to a third. Quebec’s combined QST and GST run near 14.975% on most purchases. Chicago’s combined sales tax runs around 10.25%, among the highest in the US but still well below Quebec’s rate. Property tax runs the other way: Cook County effective rates land between 1.5% and 2.5% of market value, against roughly 0.8% to 1.2% in most Montreal boroughs, so a comparable home costs noticeably more to hold in Chicago even before the mortgage math changes.
Where do Montreal movers settle in Chicago?
It splits by role and life stage. Finance movers headed for CME Group or an asset manager tend to land in the Loop or River North, close to the trading floors and the office towers. Tech hires drawn to the West Loop’s startup and Fulton Market cluster settle nearby for the walk to work.
Families lean toward Lincoln Park or Lakeview for schools and housing stock, or push out to Evanston, home to Northwestern, or Oak Park for a quieter setting. None of it changes the tax analysis, since Illinois’ flat rate and Chicago’s lack of a city income tax apply the same way in every neighborhood.
What should I do before the move?
Close the Quebec side first. Confirm your departure date, get both the T4/T1 and Relevé/TP-1 slip sets, notify RAMQ directly, deregister any QST account tied to a Quebec business, and prorate the Quebec abatement to the months you were actually resident. Then build the Illinois side: confirm your Chicago address for the part-year state return and check whether your RRSP or RRIF distributions will qualify for the retirement income exemption once drawdown starts.
- Moving from Canada to Illinois, the province-level version of this comparison
- Moving from Quebec to the US, the full Quebec departure mechanics
- Toronto to Chicago, the same destination from a common-law province
- Montreal to New York and Montreal to Boston, the other Quebec-to-US city corridors
- Montreal to Miami, the no-state-income-tax comparison from Quebec
- Canada’s departure tax, T1161 and T1243, and the leaving-Canada checklist
- RRSP and TFSA after moving to the US and the US-Canada tax treaty explained
- Your first US tax return as a new Canadian immigrant and provincial health insurance when leaving Canada, the RAMQ notice mechanics
- State income tax for cross-border filers, how Illinois compares
- Montreal to Los Angeles, the VFX and entertainment corridor
- Montreal to San Francisco, the AI and deep learning corridor
- Montreal to Washington DC, the international organizations corridor
- Montreal to Austin, the AI and tech corridor into Texas
The Cross-Border Assessment is a fixed $250. You get a written, CPA-reviewed plan covering your TP-1 and T1, the departure tax at Quebec's top rate, and what your first Illinois return will actually take.
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Yarik Yarosh, CPA. "Moving from Montreal to Chicago: Taxes, TP-1, and Three Authorities." Blue Cloud CPA, August 31, 2026. https://bluecloudcpa.com/guides/moving-from-montreal-to-chicago-taxes
This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.