Last checked: 16 September 2026. Scope: individual departure-year income-tax planning in Australia, the UK, Canada and the United States. The examples are hypothetical, not personal tax advice. They assume the stated residence outcome has first been established under the applicable rules and any treaty.
Your first overseas payslip can still belong on the tax return of the country you have just left.
The date on the boarding pass, the date your family relocates, the date your old home stops being available and the date your tax treatment changes may not match. Even after the correct cut-off is established, income, allowances and filing procedures do not all divide in the same way.
This guide tackles one practical problem: how to organise the return for the year of the move without excluding income too early, duplicating it, or using the wrong allowance. It is not another day-count guide. Our 183-day tax-residency comparison covers the prior question of whether a country treats you as resident.
First, put the move inside the correct tax year
For a move in September or December 2026, the ordinary individual tax periods below are the starting point. A document labelled “2026 tax return” may instead concern a year that ended before you moved.
| System | Period to map | Planning implication |
|---|---|---|
| Australia | 1 July 2026–30 June 2027 | January–June 2027 still belongs to the departure income year. |
| United Kingdom | 6 April 2026–5 April 2027 | The following January is not a fresh tax year. |
| Canada | 1 January–31 December 2026 | Map the resident and nonresident portions of the calendar year. |
| United States | Usually 1 January–31 December 2026 for individual calendar-year filers | Determine citizenship, residence periods and year-end status separately. |
Period references: ATO income-year guidance, HMRC’s definition of the 2026–27 tax year, CRA emigrant guidance and IRS Publication 519.
The Better Places Departure-Year Tax Map
Build one map for each person and each country, rather than giving the household a single departure date.
- Residence or treatment-change date: record the legally supported date and the evidence behind it. In the UK, identify the applicable split-year case rather than simply labelling the flight date “nonresident.”
- Worldwide-income window: identify the period during which foreign as well as domestic income needs to be considered.
- Continuing source-income window: identify income that the old country can still tax after that period, and whether it belongs on a return or follows a withholding procedure.
- Allowance and credit calculation: test the separate rule for each deduction, threshold or credit. Do not apply the salary split to everything else.
The map is an organising tool, not a residence calculator. Its value is making every exclusion explainable: which item, which period, which rule and which evidence?
Australia: six resident months do not mean half the usual threshold
The ATO’s current departure guidance gives the part-year tax-free threshold as:
A$13,464 + (A$4,736 × counted resident months ÷ 12).
The fixed component matters. Simply dividing the normal A$18,200 threshold by the fraction of the year gives the wrong result. The ATO’s guidance for becoming a foreign tax resident and myTax part-year instructions explain the adjustment.
Worked example: resident through 31 December 2026
Assume an ordinary adult taxpayer is Australian resident from 1 July through 31 December 2026, becomes foreign resident on 1 January 2027 and remains so through 30 June 2027. This example excludes special working-holiday-maker treatment and other exceptional circumstances. The six resident months are July to December.
A$13,464 + (A$4,736 × 6 ÷ 12) = A$15,832.
The tempting shortcut would give A$18,200 × 6 ÷ 12 = A$9,100. That understates the threshold by A$6,732. This difference is not a tax refund or saving of A$6,732: it is a difference in the threshold used before calculating tax.
The practical lesson is to preserve the residence timeline, not merely the number of months you worked. Six months of employment and six months of tax residence are different facts.
Then sort the income, independently of the threshold
Ordinary Australian residents generally declare worldwide income. Foreign residents generally remain within the Australian tax system for relevant Australian-source income. Special rules, including temporary-resident concessions and withholding treatment, can change the detail. See the ATO’s resident guidance and foreign and temporary resident guidance.
For the hypothetical December mover, create separate folders for income before the change and Australian-source income afterwards. Put a delayed bonus or payment for work spanning the move into a review folder rather than assuming its bank-credit date settles the treatment. Do not delete the entire January–June section of the financial records.
United Kingdom: identify the case before drawing the dividing line
Under the Statutory Residence Test, residence is determined for the whole tax year. Split-year treatment is a separate mechanism available when the relevant conditions are met. It creates a UK part and an overseas part, with nonresident treatment for most purposes in the latter. It is not an optional election once the conditions are satisfied. HMRC explains the mechanism here.
There are eight cases: Cases 1–3 concern departure and Cases 4–8 concern arrival. The departure cases cover starting full-time work overseas, accompanying a qualifying partner, and ceasing to have a UK home. If more than one applies, priority rules determine the result. See HMRC’s cases and priority rules.
Case 3 has conditions extending beyond departure day
For Case 3, the individual must be UK resident in the departure year and previous year, and non-UK resident in the following year. They must start with a UK home and cease having any UK home for the remainder of the departure year.
After that point, they must spend fewer than 16 UK days and meet a specified connection with one overseas country within six months: foreign tax residence, the prescribed six-month daily presence, or having their only home or all homes there. These are alternatives within a wider test, not a universal six-month absence rule. Read the complete Case 3 conditions.
Worked example: a September flight, but a December split
Consider a hypothetical person who flies overseas on 15 September 2026 but continues to have a UK home until 30 November. They cease having any UK home on 1 December. Assume Case 3 is satisfied in full, including the following-year requirement; Cases 1 and 2 do not apply, and there is no treaty or other relief changing this illustration.
For Case 3, the overseas part starts on the day the individual ceases to have a UK home. Here it begins 1 December 2026, not 15 September. The interval between those dates is 77 days. The example therefore needs a review of income in that intervening period instead of automatically excluding everything after the flight. The date rule is in HMRC’s Case 3 split-date guidance.
This is why a useful departure file includes the home chronology and subsequent travel, not just the boarding pass. Split-year treatment also does not itself determine treaty residence; HMRC treats that as a separate question.
Canada: your family’s later move can change the income window
CRA guidance generally places the residence-cessation date at the latest of your departure, your spouse or common-law partner and dependants leaving, and becoming resident in the country of settlement. That is a fact-dependent approach, not an instruction to ignore a treaty.
There are exceptions. For someone re-establishing residence in a country where they previously lived, their own departure may be the relevant date even when family members remain temporarily. The technical explanation is in CRA Folio S5-F1-C1, particularly paragraphs 1.22–1.23.
Worked example: two overseas payslips before residence ends
Assume a worker leaves on 1 September 2026 and becomes resident in the destination then. Their spouse and child move on 1 November, when the remaining significant Canadian ties are severed. For this illustration, a review of all facts and the treaty establishes Canadian residence through 31 October; neither a treaty override nor the former-country exception changes it.
The worker earns and receives the equivalent of C$8,000 in September and C$8,000 in October for overseas employment. Those payments fall within the assumed Canadian resident period:
C$8,000 × 2 = C$16,000 of foreign employment income to include in the resident-period calculation.
That is not a C$16,000 Canadian tax bill. It identifies income that could disappear incorrectly if the worker used the flight as the cut-off. Any available foreign-tax relief is a subsequent calculation, not permission to omit the payslips.
The CRA emigrant return instructions require resident-period world income in Canadian dollars. After residence ends, Canadian-source income can still matter; some items are reported on the return, while others follow nonresident withholding procedures. The instructions also explain recording the departure date and selecting the appropriate provincial or territorial package.
Credits have a different clock again
CRA distinguishes credits associated with qualifying resident-period amounts from other personal credits generally prorated by resident days. For the nonresident period, an income test can allow certain remaining credits in full: the Canadian-source income reported for that period must be at least 90% of net world income for that period. Each credit remains subject to its conditions and the full-year maximum.
Keep the overseas-income records even when an amount is outside the ordinary Canadian taxable-income calculation: it may still be needed to test a credit. Do not substitute Australia’s month-based threshold formula. See CRA’s newcomer and emigrant credit guidance.
United States: citizenship comes before the split-year question
A U.S. citizen does not become a part-year nonresident taxpayer merely by moving overseas. The general federal rule continues to reach worldwide income, subject to applicable exclusions, credits and filing requirements. Foreign earned income relief and foreign tax credits have their own eligibility rules. See the IRS guidance for citizens and resident aliens abroad.
Worked example: the foreign salary is not automatically removed
A hypothetical U.S. citizen earns and receives US$60,000 before moving and US$30,000 from overseas work afterwards, all during 2026. Their starting wage total for the federal return is US$90,000 before any qualifying exclusions or other adjustments, not automatically US$60,000.
The useful record is the complete US$90,000 wage history plus evidence supporting any relief. This example does not calculate taxable income or tax due.
Some noncitizens can have a genuine dual-status year
Dual status means being a U.S. tax resident for one portion of the year and a nonresident for another; it does not mean dual citizenship. Resident-period worldwide income and the applicable nonresident-period U.S.-source or effectively connected income are treated under different rules. A dual-status return generally cannot use the ordinary standard deduction. Certain eligible married taxpayers can elect resident joint-return treatment instead, with wider consequences. These distinctions come from the IRS dual-status guidance.
First establish whether residence actually ends. Leaving with a green card does not itself end the green-card tax test. Under the substantial-presence rules, an earlier-than-31-December termination can depend on a foreign tax home, closer connection, subsequent-year status and the required statement. See the IRS residence-ending rules.
For a qualifying departure-year dual-status filer who is nonresident at year-end, the normal structure is Form 1040-NR with a statement for the resident portion; Form 1040 may be used for that statement. It is not two independent full-year returns. Check the applicable-year instructions in Publication 519 before filing.
One income ledger is more useful than four piles of statements
Use the following original Better Places worksheet structure for every material income item. A spreadsheet is convenient, but a plain table is enough; no new app is required.
| Field | Record | Question it resolves |
|---|---|---|
| Owner and income type | Person, account, employer; salary, interest, rent or other income | Whose return and which income category? |
| Amount and currency | Gross amount, relevant expenses separately, conversion evidence | Can the domestic-currency calculation be reconstructed? |
| Work or earning period | Dates and locations to which the income relates | Does it span the move? |
| Payment date | When received or credited; retain the statement | Does the receipt date differ from the earning period? |
| Residence window | Before, after, or crossing the supported cut-off | Which treatment needs investigation? |
| Foreign tax evidence | Withholding statement, assessment and payment record | What supports a possible credit or adjustment? |
| Reporting decision | Return inclusion, withholding route, or documented exclusion | Why is this item included or excluded? |
Do not assume an annual statement can be divided by twelve. A concentrated bonus, irregular interest payment or employment change can make a monthly average a poor representation of what actually happened. Preserve both earning and receipt information and let the relevant income rule determine the allocation.
Nor should the bank account be the only evidence of source. For example, IRS guidance generally sources personal-service income by where the services were performed; moving the payment to a different account does not relocate the work. This is explained in Publication 519’s source-of-income discussion.
A practical brief to send before the return is prepared
Attach the residence chronology, home and family-move evidence, travel record and completed income ledger to a request along these lines:
Please confirm the residence or split-year treatment for each relevant country and the exact date used. Identify the worldwide-income period, continuing source-income obligations, and the calculation for each allowance or credit. Please flag payments spanning the move, any foreign-tax relief or treaty position, and which year-specific forms and statements are required. Where treatment depends on next year’s facts, please identify what we must track before finalising the position.
Ask for unresolved items to be identified, not silently assigned to the cheaper period. A missing document is a much easier problem to fix when its effect is visible.
Asset disposals, deemed gains and departure elections are a separate workstream. Our exit-tax and deemed-disposition guide covers that question without turning this income-allocation guide into a second capital-gains article.
The decision rule
Establish the period first, classify the income second, calculate allowances and credits third, and select the filing procedure last.
A departure-year return should explain the transition, not pretend one country stopped existing on the day you flew out. The aim is a complete, defensible record—not a particular tax result.
Source dates and limits
Current official ATO, HMRC, CRA and IRS material was checked on 16 September 2026; the source links sit alongside the relevant rules above. The ATO’s myTax 2026 instructions concern 2025–26. CRA guidance includes 2025 worked examples, and the current linked IRS Publication 519 is the 2025 edition. Those older-year examples are not treated here as final 2026 or 2026–27 return instructions. Use the final instructions for the actual tax year when filing.
The six-month Australian calculation, 77-day UK comparison, Canadian salary example, U.S. wage example and Departure-Year Tax Map are original Better Places illustrations. Future-dated events are explicit assumptions, not observed cases. No final tax liabilities are calculated. This guide does not resolve treaties, temporary-resident concessions, special employment income, capital gains, company or trust taxation, state taxes, or every social contribution and healthcare levy. Obtain suitably qualified cross-border advice for your own facts.
Featured photograph by Anastassia Anufrieva on Unsplash. An editorial illustration of reviewing paperwork, not a photograph of a taxpayer or adviser featured in these hypothetical examples.
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