Moving from Montreal to Philadelphia: Taxes, Pharma, and City Wage Tax

Philadelphia advertises Pennsylvania’s flat 3.07% state income tax, one of the lowest in the country, and a Montreal transplant coming off Quebec’s 53.31% top rate reads that number and assumes the math is basically done. It isn’t. Philadelphia layers its own city wage tax on top of the state rate, close to 3.75% for residents, and that single fact changes the real answer more than most people expect before they’ve signed a lease.

Why does this specific corridor exist?

Five pipelines feed it, and none of them are generic relocation. Montreal’s pharma cluster sends scientists and regulatory staff into GSK, Johnson & Johnson, Merck, and AstraZeneca’s Philadelphia-area operations. Mila and Element AI alumni move into Penn’s AI and robotics programs and Comcast’s technology group. Montreal finance staff from National Bank and Desjardins land at Vanguard, Lincoln Financial, or regional banks.

• Bombardier and CAE aerospace engineers move into Lockheed Martin’s King of Prussia site or Boeing’s Ridley Park plant, and hospital-system staff from Montreal’s teaching hospitals move into Penn Medicine, Jefferson Health, or Temple University Health. That mix means this corridor carries a wider range of visa types and comp structures than a single-industry move.

How much does the tax rate actually drop?

Substantially, but city residency is the detail that changes the number. Quebec’s combined top rate lands around 53.31%. Pennsylvania’s flat state rate is 3.07%, among the lowest in the country, but Philadelphia’s wage tax stacks directly on top for anyone who lives inside city limits, and the combined state-and-city bill runs close to 6.82% before federal tax is applied at all.

	Montreal / Quebec	Philadelphia / Pennsylvania
Income tax	Combined top rate ~53.31%	Flat 3.07% state, plus city wage tax ~3.75% (resident)
City/local income tax	None (provincial only)	Philadelphia wage tax applies by residency and by where work is performed
Sales tax	QST 9.975% + GST 5%, ~14.975% combined	8% (6% state + 2% Philadelphia local)
Property tax	Roughly 0.7% to 1.0% in most municipalities	Roughly 1.2% to 1.4% in Philadelphia
Estate/inheritance tax	None (deemed disposition at death instead)	No estate tax; inheritance tax 4.5% to 15% depending on heir

Does Philadelphia charge its own wage tax?

Yes, and it runs independently of the state return, assessed by residency and by where the work is physically performed rather than by where the paycheck is issued. A Montreal transplant renting in Center City owes a materially different rate than one commuting in from King of Prussia.

• Residents pay the higher rate, about 3.75%, on essentially all earned income no matter where the work happens. Someone who lives in the Main Line suburbs or across the river in New Jersey but works inside city limits pays a lower nonresident rate on wages earned for work physically performed in Philadelphia. Both rates get adjusted periodically by the city, so confirm the current figure at filing time rather than carrying over last year’s number, and factor the gap into any offer that puts a Center City address against a suburban one.

Which Canadian authorities handle the departure?

Three, and Pennsylvania isn’t one of them. The final TP-1 goes to Revenu Québec, covering worldwide income to the departure date. The final T1 goes to the CRA, covering the same period federally. Anyone who ran a Quebec corporation, common among aerospace and pharma contractors on consulting arrangements, also has a QHSF (Quebec Health Services Fund) filing to close out on the corporate side before the personal departure paperwork is finished.

• Skipping the QHSF close-out is the mistake that surfaces a year later as an unexpected Revenu Québec notice, well after the mover has stopped thinking about Quebec compliance at all.

What replaces my T4 and T5 on the way out?

Relevé slips. Quebec issues its own slips for the provincial return, the Relevé 1 alongside the federal T4 for employment income, and the Relevé 3 alongside the T5 for investment income. A partial-year Montreal employer, common for anyone leaving mid-project at a pharma or aerospace employer, issues the Relevé 1 on its own schedule, often weeks behind the T4, and the TP-1 can’t be completed from the federal slip total alone.

• The Quebec abatement, a 16.5% reduction of basic federal tax, also has to be prorated to the actual months of Quebec residency in a departure year rather than applied at the full-year rate.

What happens to RAMQ and my RRSP?

RAMQ doesn’t end automatically the day you leave. Notify the Régie de l’assurance maladie du Québec directly once the departure date is fixed, and expect coverage to run roughly three months past that notification, a gap that needs bridge coverage or a confirmed US insurance start date to sit against it.

• The RRSP keeps its treaty deferral at the federal level regardless of which state you land in. Pennsylvania starts its own return from federal adjusted gross income, so it generally doesn’t reach RRSP growth the federal return already deferred under Article XVIII. The RRSP and TFSA guide covers the election mechanics and the standard recommendation to close the TFSA before departure, since its investment income gets no comparable treaty shelter once you’re a US resident.

Does Pennsylvania tax retirement income?

Yes, unlike a number of states, but at the same flat 3.07% as everything else, with no separate bracket for distributions. A 401(k), an IRA, an employer pension, and Social Security all still land in the Pennsylvania tax base, just at the lowest flat rate most cross-border movers will see anywhere in the country.

• Whether that flat rate reaches RRSP and RRIF distributions the same way it reaches a 401(k) is worth a direct confirmation with a current preparer rather than an assumption carried over from the federal treatment, since state conformity rules shift year to year.

What should I do before the move?

Confirm the actual Philadelphia address before anything else, since city residency is what turns the wage tax on or off, and that single fact moves the effective rate more than the state flat tax ever will. Then close the Quebec side in order: fix the departure date, gather both the T4/T1 and Relevé/TP-1 slip sets, notify RAMQ directly, and close out any QHSF filing tied to a Quebec corporation before the personal return is finished.

Is Philadelphia cheaper day to day than Montreal?

On sales tax, clearly. Quebec’s combined QST and GST run about 14.975% on most purchases, against Philadelphia’s 8% (6% state plus 2% local). Property tax runs the other way: most Quebec municipalities sit around 0.7% to 1.0%, while Philadelphia runs closer to 1.2% to 1.4%, so a comparable home can carry a noticeably higher property tax bill in Philadelphia even before US home prices are factored in.

• Center City, Rittenhouse Square, and Old City draw professionals who want walkability and a short commute, at full resident wage-tax rates. University City suits Penn Medicine and academic hires. The Main Line suburbs and King of Prussia put a mover at the lower nonresident wage-tax rate while staying close to Vanguard’s Malvern campus and the Lockheed Martin site.

Does Pennsylvania have an estate tax?

No, but it has an inheritance tax, and the rate depends on who receives the property rather than how large the estate is. Transfers to children and grandchildren are taxed at 4.5%. Transfers to siblings are taxed at 12%, and transfers to everyone else, unrelated beneficiaries included, are taxed at 15%. Quebec has no separate estate or inheritance tax, using deemed disposition at death instead, so this is a genuinely new concept for a Quebec family settling in Pennsylvania permanently, not just a different number on a familiar form.

• Moving from Canada to Pennsylvania, the province-level version of this corridor
• Toronto to Philadelphia, the two-authority version of the same city
• Montreal to Houston and Montreal to Dallas, zero-state-tax alternatives
• Montreal to Austin, the AI and tech corridor into Texas
• Montreal to Atlanta and Montreal to Charlotte, other finance and fintech corridors
• Montreal to Nashville, a no-income-tax comparison
• Montreal to Boston, the sibling biotech and academic-research corridor
• Montreal to New York, the finance and gaming corridor from the same city
• The Canadian departure tax, T1161 and T1243
• The leaving-Canada checklist
• RRSP and TFSA after moving to the US
• The US-Canada tax treaty explained
• Your first US tax return as a new Canadian immigrant
• Ottawa to Philadelphia, the defence and pharma corridor from Ontario
• Calgary to Philadelphia, the energy-to-refinery corridor from Alberta
• Vancouver to Philadelphia, the biotech-to-pharma corridor from BC
• Montreal to Detroit, the aerospace-to-auto corridor into Michigan
• Montreal to Pittsburgh, the AI and robotics corridor in the same state

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