In the year you move, both systems have a claim on part of the year, and the sequencing question is really about which return must be finished first. Canada closes your resident period and runs a departure computation on the assets held at that point. Australia opens a resident period from arrival. The two cannot simply be done in parallel, because the credit each may allow depends on a figure the other produces, and the years themselves do not line up, so the Australian period straddles two Canadian ones. Fix the dates before touching either return.
Which country taxes me first, Canada or Australia?
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Emigrants face the Canadian departure computation and an Australian arrival position in the same twelve months; returning Canadians face the reverse, with superannuation as the recurring complication. One country taxes at source and the other gives credit, and getting that order wrong is what produces double taxation on paper.
Which country goes first
Emigrants face the Canadian departure computation and an Australian arrival position in the same twelve months; returning Canadians face the reverse, with superannuation as the recurring complication.

The exception
Two calendar systems that do not align — Australia's year ends mid-year — over a corridor with heavy permanent migration in both directions.
Your next step
The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on Canada ↔ Australia cross-border tax. The quote comes before the work, in writing.
Reviewed against current guidance for the 2025 and 2026 filing seasons by Udit Gupta, International Tax, Cross-Border Tax & Transfer Pricing Expert, Legal Quotient Consultants. General guidance only. Your own facts decide the answer, so bring them to a call before relying on this.
Files that look like this one
One migration window with a Canadian exit and an Australian arrival
A family emigrated permanently and had both events inside the same twelve months: Canadian residence ending, Australian residence beginning, with salary, a bonus and an investment portfolio straddling the move. We fixed both dates, prepared the part-year Canadian return with the departure computation on the assets held at that point, and set out the Australian arrival position from the same schedule. The engagement produced the closing Canadian filing, the opening Australian position, and one working paper reconciling them so that neither return contradicted the other.
Read how this one runsSuperannuation characterised on arrival rather than years later
A client returning to Canada after a working life in Australia had a large superannuation balance and no view on how Canada would treat it. We obtained the fund documentation, established what the arrangement is and how contributions and internal growth had arisen, and formed a position on what is reportable while the money remains in the fund. The engagement produced a written characterisation, the reporting position for the years from arrival, and a record of the balance and its components at the date Canadian residence resumed.
Read how this one runsCredit apportioned across two Canadian years from one Australian assessment
A Canadian resident with continuing Australian income had claimed credit for each Australian assessment in the Canadian year the assessment arrived. Because the Australian year ends part way through the Canadian one, the credit never sat beside the income it related to. We split each Australian assessment between the Canadian years the income fell in, amended the returns affected, and documented the apportionment method. The engagement produced corrected Canadian filings and a repeatable schedule the client now prepares from the Australian payment summaries each year.
Read how this one runsBoth countries treated as resident and the timeline reconstructed
A client had filed as a resident of both countries for an overlapping period, having moved, returned briefly, then moved again. Each filing looked defensible in isolation and together they were contradictory. We reconstructed the residence timeline from travel records, housing, family location and employment, took a position on the date each residence began and ended, and amended the filings on both sides to agree with it. The engagement produced one documented timeline and a consistent set of returns in each country.
Read how this one runsCanadian rental property kept after a permanent move to Australia
A client emigrated and kept a Canadian house let to tenants. Canada taxes that rent as the country the property sits in and applies withholding to the payments; Australia taxes the same rent as the country of residence and gives credit. The mapping was complicated by the non-aligned years. We put the Canadian non-resident filings in order for the property, recomputed the rent for the Australian return, and apportioned the Canadian tax across the Australian periods. The engagement produced both filings and a reconciliation of the credit.
Read how this one runsReturn to Canada with Australian employment income continuing after arrival
A client resumed Canadian residence but kept earning from an Australian employer for some months afterwards, and had reported the income in Australia only. Once Canadian residence resumed, Canada taxed that income and allowed credit for the Australian tax on it, while Australia's claim narrowed to its own source. We cut the income at the arrival date, apportioned the Australian tax to the part arising after it, and prepared both sides from that split. The engagement produced amended Canadian returns and a documented division of the same earnings.
Read how this one runsTwo Passports, Two Returns, One Income
Dual citizenship does not let you choose which country taxes you. The work is establishing residence, applying the treaty article that governs each income type, and preparing both returns from one set of figures so they agree line for line.
Read how this one runsPutting a Foreign Hire on a Canadian Payroll
The obligation sits on the payer, and the payer is liable for what it failed to withhold. Registration, the residence question and any treaty exemption are settled before the first pay run rather than after.
Read how this one runsAll case studies — every published engagement in one place.
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More on Canada and Australia
By apportioning, not transposing. Because the Australian year ends part way through the Canadian one, income running through a single Australian year falls into two Canadian years, and an Australian assessment cannot be lifted whole into a Canadian return. The credit has to sit in the Canadian year holding the income it relates to, supported by the share of Australian tax attributable to that slice. Keep the payment summaries and the assessment so the split can be evidenced. If the Australian figure settles after the Canadian return is filed, expect to amend it.
Yes, for the part of the year you were resident, and that return does more than report income. It is also where the departure computation lands: ending Canadian residence triggers a deemed disposal of certain property, and the gains go into that final resident year rather than waiting for an actual sale. Migration along this corridor is usually permanent, which makes the departure computation a real event rather than a formality, and it happens in the same twelve months as your Australian arrival position. One window, two systems.
Start with what the fund is and what has happened inside it, because the treatment of contributions, of growth within the fund, and of a payment out of it are three different questions. The recurring problem for Canadian residents is not the payment; it is whether growth accruing inside the fund is taxable in Canada year by year while nothing has been received and nothing taxed in Australia. That is a characterisation question about the arrangement itself, and it must be settled before any credit question arises. Obtain the fund documentation before forming a view.
It becomes the main item in the file. Two dates matter: when Australian residence ended and when Canadian residence resumed, because they may not fall on the same date and the fund's treatment can turn on both. Then the characterisation question, what the arrangement is under Canadian analysis, decides whether anything is reportable while the money stays in the fund. Settling that on arrival costs far less than settling it years later with a run of Canadian returns already filed on an assumption nobody wrote down at the time.
Once you are resident there it taxes you on income wherever it arises, including anything still flowing from Canada, and it gives credit for Canadian tax on that income. Canada meanwhile keeps taxing what has a Canadian source, rent from a property you kept for instance, and withholds on some payments at source. So the order flips relative to your old filings: the country you now live in taxes and credits, while Canada goes first only on what arises within it. The credit then has to be mapped across two non-aligned years.
For a resident, yes — worldwide gains are taxable, and the gain is computed in your own currency, so the exchange rate at purchase and at sale changes the number even when the local-currency price did not move. The country where the property sits usually taxes it too, often with a withholding or clearance step before closing, and that tax becomes a credit. A principal residence relief may apply to a home abroad on the same terms as one at home. See principal residence and foreign property.
Usually the country you are physically in, because employment income is generally sourced where the work is done, with your residence country taxing it as well if you are resident there and giving credit. Three things follow: your employer may acquire withholding and social security obligations where you sit, a treaty tie-breaker may be needed if both countries call you resident, and a short trip that becomes a long stay can cross a residence threshold nobody was watching. See remote workers and digital nomads.



