How the CRA Decides Whether You Are a Canadian Tax Resident: Residential Ties, the 183-Day Rule, and the Treaty Override

Short version: Deemed Residency in Canada: The 183-Day Sojourner Rule · Factual Residency in Canada: The Residential Ties Test

Canadian tax residency is a question of fact, not of citizenship, immigration status, or a simple day count. The CRA asks where your residential ties are: your home, your spouse and dependants, and the ordinary connections of a life. A Canadian citizen living in Florida with no Canadian home is a non-resident; an American on a work permit with a Toronto apartment and a family there is a resident. The 183-day rule exists, but it catches people who are not otherwise resident, and the Canada-US treaty can override the Canadian answer when both countries claim the same person.

Key takeaways

• Factual residency turns on residential ties. Primary ties: a dwelling available to you in Canada, a spouse or common-law partner in Canada, and dependants in Canada. Secondary ties: personal property, social and economic ties, a driver's licence, a provincial health card, bank accounts, memberships, and a Canadian passport as a weak indicator.
• Deemed residency applies to someone who is not factually resident but sojourns in Canada for 183 days or more in a calendar year; they are taxed as a resident for the full year.
• Deemed non-residency applies when a person who would be resident under Canadian law is treated as a resident of the other country under a treaty tie-breaker; section 250(5) then deems them a non-resident of Canada.
• Departure date and arrival date follow the same ties analysis: you become a non-resident on the latest of the day you leave, the day your spouse and dependants leave, and the day you become resident elsewhere.
• Forms NR73 (leaving) and NR74 (arriving) request the CRA's opinion; they are optional, not binding, and often unnecessary when the facts are clear.

The factual test

The CRA's published position (Income Tax Folio S5-F1-C1) treats the primary ties as the most significant. A person who keeps a home in Canada that is available for their use, or whose spouse or dependent children remain in Canada, is very likely still a Canadian resident regardless of where they spend their time. Selling or leasing the home on arm's-length terms, and moving the family, are the steps that sever the primary ties.

Secondary ties are weighed collectively. Keeping a Canadian bank account and a credit card is not, on its own, residency; keeping a car registered in Ontario, an Ontario driver's licence, an OHIP card, a cottage, club memberships, professional memberships, and most of your investments in Canadian accounts starts to look like continued residence. The CRA also considers regularity and length of visits and whether the move was intended to be permanent.

The 183-day rule

Someone who is not factually resident but is physically present in Canada for 183 days or more in a calendar year is deemed resident for the whole year and taxed on worldwide income. Part days count. This catches long-stay visitors, some commuters, and people who moved out but keep returning. The treaty tie-breaker can override it for a US resident.

The treaty tie-breaker

If Canada considers you resident under its rules and the US considers you resident under its rules (substantial presence test or green card), Article IV of the treaty breaks the tie: permanent home first, then centre of vital interests, then habitual abode, then citizenship, then mutual agreement. If the tie-breaker assigns you to the US, section 250(5) deems you a non-resident of Canada from that date, with the departure tax consequences that follow.

Departure and arrival dates

For an emigrant, the CRA treats the departure date as the latest of the date you leave Canada, the date your spouse and dependants leave, and the date you become a resident of the new country. A spouse who stays behind to sell the house can push the departure date past the mover's own flight. For an immigrant, residency begins on the date residential ties are established, typically the arrival date when the person arrives with a home, family, and a job.

NR73 and NR74

These forms ask the CRA for an opinion on residency status. The opinion is not binding, the questionnaire is intrusive, and filing one when the facts are clear invites scrutiny without adding certainty. They are useful when the facts are mixed: a spouse remaining in Canada temporarily, a home not yet sold, frequent returns.

Worked example

A Calgary engineer takes a Houston job on June 1. His wife and children stay in Calgary until the house sells and school ends, moving on August 20. He keeps his Alberta driver's licence until October.

• Primary ties. Home available and spouse and dependants in Canada until August 20.
• Departure date. August 20, the date the family leaves, not June 1.
• Consequence. Houston salary from June 1 to August 20 is taxable in Canada as a resident (with a foreign tax credit for US tax); the deemed disposition is valued at August 20; the final T1 has an August 20 departure date.
• Treaty. From June 1 he may also be a US resident under the substantial presence test; if the CRA and IRS both claim June 1 to August 20, the tie-breaker (permanent home in Canada until August 20) keeps him Canadian for that window.

Official sources

"Significant residential ties to Canada include: a home in Canada; a spouse or common-law partner in Canada; dependants in Canada." — Canada Revenue Agency, Determining your residency status, https://www.canada.ca/en/revenue-agency/services/tax/international-non-residents/information-been-moved/determining-your-residency-status.html

"The residence status of an individual is always a question of fact to be determined by taking into account all of the circumstances of the individual. [...] The residential ties of an individual that will almost always be significant residential ties for the purpose of determining residence status are the individual's: dwelling place (or places); spouse or common-law partner; and dependants." — Canada Revenue Agency, Income Tax Folio S5-F1-C1, Determining an Individual's Residence Status, https://www.canada.ca/en/revenue-agency/services/tax/technical-information/income-tax/income-tax-folios-index/series-5-international-residency/folio-1-residency/income-tax-folio-s5-f1-c1-determining-individual-s-residence-status.html

Practitioner note

The departure date is a fact, not a choice, and the fact most often overlooked is the spouse. A spouse who stays behind to sell the house extends the mover's Canadian residency to the day the spouse leaves, and every dollar of US salary in between is taxable in Canada first. We map the family's timeline before we map the taxpayer's.

See also: Planning a move? See the Canada-to-Florida guide and browse every corridor by city, province, and state.

Next step

Fairlight prepares the residency analysis, the departure or arrival date determination, and the U.S. and Canadian returns that follow from it. See cross-border pricing or book a call.