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Residency for tax purposes

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Residency is the first question in almost every difficult individual tax file, because it determines what Canada can tax at all. A resident of Canada is taxed on worldwide income; a non-resident is taxed only on certain Canadian-source income. The determination is factual rather than administrative — it turns on the ties a person maintains with Canada, not on citizenship, not on immigration status, and not on any form they filed. That surprises taxpayers constantly, and an agent who treats residency as a paperwork question will give wrong answers with confidence. This tutorial covers what residency means for tax, how factual residency is determined, the deeming rules, and where treaties override the domestic answer.

How to work through this tutorial

Residency is determined in a specific order, and skipping ahead produces wrong answers: 1. Understand what turns on residency — what Canada taxes in each case. 2. Determine factual residency from residential ties, starting with the significant ones. 3. If that does not settle it, consider the deeming rules. 4. If the person is also resident somewhere else, apply the treaty tie-breaker. 5. Handle part-year residency, where most real cases actually land. 6. Know what CRA can and cannot tell a taxpayer about their own status. 7. Check your work against the common errors. 8. Verify every specific against CRA's published guidance before relying on it.

What turns on residency

A resident of Canada is taxed on worldwide income — income from everywhere, regardless of where it was earned or where it stayed. A non-resident is taxed only on certain Canadian-source income: employment performed in Canada, business carried on in Canada, and gains on certain Canadian property, with other Canadian-source amounts subject to withholding at source instead. That is an enormous difference, and it is why residency is the first question rather than a detail. Someone who has moved abroad and assumes they no longer file may be a factual resident still taxable on everything. Someone who has arrived and assumes they must report their entire previous year is usually mistaken in the other direction. Residency also governs benefits, which generally require residence in Canada, and it determines which provincial or territorial tax applies. Because so much rides on it, and because the test is factual, residency questions are among the most commonly escalated in individual tax. An agent's realistic job on a difficult case is to explain what the test looks at and to route the taxpayer to the right process, not to pronounce on their status from a phone call.

Factual residency: the ties test

Factual residency is determined by the residential ties a person maintains with Canada. CRA weighs significant ties most heavily, and looks at secondary ties where the significant ones do not settle the question. The significant ties are a dwelling place available in Canada, a spouse or common-law partner in Canada, and dependants in Canada. Someone who keeps a home available to them here, and whose partner and children remain here, is very likely still a factual resident whatever their travel pattern says. Secondary ties are considered together rather than individually — personal property here, social and economic ties, a driver's licence, a provincial health card, bank accounts, memberships. No single secondary tie determines anything. It is the overall picture that matters, which is exactly why the test resists a checklist answer. Citizenship is not a tie. Neither is immigration status, a passport on its own, or the fact of having filed or not filed a return. Taxpayers routinely believe otherwise, and the belief runs in both directions — that leaving Canada physically ended their residency, or that holding citizenship preserved it. Because the test is factual, two people with identical paperwork can have different residency status if their actual ties differ. There is no election to be made and no form that grants or removes residency.

Deemed residency

Where the factual test does not make someone a resident, the Act can deem them to be one. The best-known deeming rule is the sojourning rule: a person who is not a factual resident but who stays in Canada for a threshold number of days in a calendar year is deemed resident for the whole year. Confirm the threshold and exactly what counts as a day of presence, since partial days are treated in a particular way. Other categories are deemed resident regardless of ties — certain government employees posted abroad and certain family members among them. These exist so that people serving Canada overseas are not pushed out of the tax system by the absence they were sent into. There is also a deemed **non**-resident rule, which is where treaties enter. Where someone is a resident of Canada under domestic rules and also a resident of a treaty country, and the treaty's tie-breaker resolves them to the other country, they are treated as a non-resident of Canada. The order matters: establish factual residency first, then deeming, then the treaty tie-breaker. Reaching for a treaty before establishing the domestic position produces answers that cannot be justified.

Part-year residency

Most real residency cases are not about someone who was resident all year or non-resident all year. They are about someone who arrived or left partway through, and the answer for them is a part-year return. A person who becomes a resident during the year is taxed on worldwide income from the date residency began, and on Canadian-source income only before that. A person who ceases residency is treated in the mirror image. Their credits and certain amounts are generally prorated to the period of residency, which is the part most often got wrong. When residency begins and ends is itself a factual question, tied to when the significant residential ties were established or severed rather than to the date of a flight or a visa. Departure also has consequences beyond the return: a deemed disposition of certain property can arise on emigration, which is a substantial issue for anyone with investments and is covered in the individual tax line rather than here. Someone who arrived and someone who left both need the return for the year of transition handled differently from a full-year return. Treating a part-year resident as a full-year resident overstates what Canada taxes.

What CRA can tell a taxpayer about their status

A taxpayer who is unsure of their residency status can ask CRA for a determination. There are prescribed forms for this — one for individuals leaving Canada and one for individuals entering — on which the taxpayer sets out their circumstances and CRA gives an opinion. That process exists precisely because the test is factual and cannot be resolved reliably in a conversation. An agent asked "am I a resident" on a difficult set of facts should explain the test, explain that the determination depends on the full picture, and point at the determination process rather than improvise an answer. On straightforward facts — a person who has always lived here, works here, and has never left — there is no difficulty and no need to escalate anything. Judgement is about recognising which kind of call you are on. A CRA opinion on residency is based on the facts presented. If the facts change, or were not fully presented, the opinion does not bind anyone to a wrong outcome. The income tax folio on determining residence status is the detailed treatment, and it is the right thing to point a taxpayer or a colleague at for the full test rather than any summary.

Common errors

Treating citizenship as decisive. It is not a residential tie at all. Treating physical departure as ending residency. Someone who leaves but keeps a home available here, with a partner and children here, is very likely still a factual resident. Treating a form as granting or removing residency status. The determination forms produce an opinion on the facts; they do not confer status. Applying the sojourning day-count rule to someone who is already a factual resident. Deeming rules apply where the factual test has not already made them resident. Reaching for a treaty before establishing the domestic position. The tie-breaker only operates once there is dual residency to break. Treating a part-year resident as resident for the whole year, or forgetting to prorate the amounts that must be prorated. Fixing the date residency began or ended by a flight or a visa rather than by when the significant ties were established or severed. Pronouncing on a difficult residency question in a phone call. Explain the test and route it to the determination process. Forgetting that benefit entitlement generally depends on residence, so a residency change affects far more than the return.

What to verify this tutorial against

This was drafted without a source document. Residency is the topic where a confident wrong answer does the most damage, so confirm every specific before relying on it. The income tax folio on determining an individual's residence status is CRA's detailed published position, covering the significant and secondary ties, the deeming rules, and the treaty interaction in far more depth than this summary. CRA's pages for individuals leaving and entering Canada cover the practical consequences of each, including the part-year return and the departure obligations this tutorial only mentions. The determination forms for residency status — one for leaving, one for entering — carry their own instructions. Confirm the current form numbers on CRA's forms pages. The Income Tax Act sets out the deeming rules, including the sojourning threshold and the deemed non-resident rule. Confirm the day threshold there rather than from memory. Canada's tax treaties contain the tie-breaker rules, and they are not identical between treaties. The applicable treaty governs; do not generalise from one to another. Where the question involves a departure and property, the deemed disposition rules apply and are a separate topic requiring their own reference.

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