Keeping Your US Remote Job While Living in Canada: Whose Payroll, Whose Taxes, and What Your Employer Needs to Know

Where work is performed decides who taxes it first, and remote work performed from a desk in Canada is Canadian employment income no matter where the employer sits or which flag is on the paycheck. That single principle drives everything. For you: Canada and your province tax the wages at full rates; the US, taxing its citizen on worldwide income, also reports them — and the foreign tax credit (or the FEIE) makes the US side largely a paper exercise, since Canadian rates are higher. For your employer: an employee physically working in Canada creates Canadian payroll obligations — income tax withholding, CPP, EI — that a US payroll running FICA and federal withholding does not satisfy; and, depending on what you do, your presence can create a Canadian permanent-establishment question for the company. The compliant end-states are well-worn: the employer registers for Canadian payroll (or runs you through a Canadian professional employer organization), your withholding moves to the Canadian system, and a totalization certificate settles that social security contributions go to one country, not both. The messy middle — W-2 withholding continuing as if nothing moved — doesn't change what you owe; it just misdirects the prepayments, funds a US refund with money Canada wanted quarterly, and leaves the employer non-compliant.

Key takeaways

• Your returns: Canadian T1 reports the wages first (employment exercised in Canada); the 1040 reports them too, offset by foreign tax credits or the FEIE (credits usually win — they cover investment income too and don't cap out at the exclusion amount). Expect to owe Canada by installments if withholding stays American.
• Social security is either/or: under the US–Canada totalization agreement, the work is covered by one system. An employee of a US employer working long-term in Canada generally belongs in CPP/EI; short-term assignments (up to five years) can stay in FICA with a certificate of coverage. Paying both is the common error and it is recoverable but tedious.
• The employer's exposure: Canadian payroll registration and remittance for an employee in Canada; a permanent-establishment analysis if you conclude contracts, manage, or anchor revenue from Canada; provincial employment standards riding along. Small employers usually solve all of it with a PEO/employer-of-record; larger ones register.
• The contractor conversion — quitting employment and invoicing the same company through yourself or a Canadian corporation — solves the employer's payroll problem and creates your own: self-employment analysis in both countries, the corporation option with its CFC angles for a US citizen, and genuine-contractor substance requirements on both sides. Sometimes right, never automatic.
• State tax should end: the wages of a Canadian-resident remote worker are not the old state's to tax (absent sticky-state domicile issues or convenience-of-employer rules that require attention if the employer sits in one of those states — New York's rule deserves a specific look).
• Paper the arrangement: a remote-work agreement stating the work location, the payroll approach, and the coverage certificate keeps three tax authorities and one HR department aligned.

The employer conversation

It goes better framed as a solved problem: "I'm moving to Canada; companies handle this with an employer-of-record or a Canadian payroll registration; here's what each costs; my compensation can absorb the difference." Employers refuse when they hear open-ended risk; they agree when they hear a menu. The fallback positions — stay a W-2 employee with US withholding, or go silent — are the two that eventually land on an advisor's desk with penalties attached.

Worked example

A product designer moves from Chicago to Montreal, keeping her US$150,000 job at an Illinois software company. Quarter one, nothing changed: W-2 withholding runs (federal, FICA, Illinois), Canada receives nothing. The fix, effective quarter two: the employer engages a Canadian employer-of-record; her pay flows through Canadian payroll with Quebec and federal withholding and QPP; a certificate question is mooted (long-term move — Canadian coverage is right); Illinois withholding stops with her non-residency documented. Year-end: her T1 reports the full year's wages with quarter one's tax paid by balance-due (Canada doesn't care that the US withheld first); her 1040 reports the wages and claims foreign tax credits that zero the US tax; the over-withheld US federal tax and misdirected FICA from quarter one come back through the refund and employer-correction process; Illinois takes its part-year share and lets go. Her net position lands where it always would have — Quebec rates — but from quarter two onward the money flows to the right treasuries in real time instead of through a year-end unwinding.

Official sources

The IRS states that to claim the foreign earned income exclusion a taxpayer's "tax home must be in a foreign country" and the taxpayer must be a bona fide resident of a foreign country for a full tax year or "physically present in a foreign country or countries for at least 330 full days during any period of 12 consecutive months." — Internal Revenue Service, Foreign Earned Income Exclusion, https://www.irs.gov/individuals/international-taxpayers/foreign-earned-income-exclusion

The Social Security Administration explains that the totalization agreement between the United States and Canada helps people who have worked in both countries qualify for benefits by combining credits, and assigns coverage so that workers pay social security taxes to only one country for the same work. — Social Security Administration, Totalization Agreement with Canada, https://www.ssa.gov/international/Agreement_Pamphlets/canada.html

Practitioner note

Remote-work moves fail at the payroll layer, not the treaty layer — the law about who taxes the wages was never in doubt, and the certificate, the EOR, and the withholding switch are plumbing anyone can install. We tell clients to have the employer conversation before the move with the solution attached, because the version of this that starts with a CRA payroll examination letter costs the same plumbing plus penalties plus goodwill.

See also: every Canada-US moving guide by city, province, and state; and browse every cross-border tax topic guide, organized by situation.

Next step

Fairlight prepares the remote-work setup — payroll structuring with the employer or EOR, the totalization coverage position, installment planning, and the two-country wage reconciliation. See cross-border pricing or book a call.