Do I have to report my whole year's income if I moved?
No, and this is the most common error on a move year. For the part of the year you were resident, worldwide income is reported. For the remainder, only income from sources in the country concerned comes into charge. The two halves are prepared on different bases inside one tax year, and the annual summaries your bank and employer send will not respect that split. Take each item, date it, and put it in the right period. The return then shows what it should: everything for the resident months, and the sourced items only for the rest of the year.
Why were my tax credits reduced on a part-year return?
Because most personal credits and allowances are given for a full year of residence, and where residence covered only part of the year they are apportioned to that part. It is not a penalty and it is usually not an error. It does mean the effective rate on the resident period's income can be higher than a full-year calculation suggested. Two things follow. Check whether any particular credit is given on a different basis instead of being apportioned, because they do not all behave the same way. Then check that income falling either side of the split point has been allocated correctly, because that allocation drives the apportionment.
Which date actually splits the year for tax purposes?
The date residence began or ended on the facts, rather than the date of a flight or of a visa. The facts that count are the ones showing where the home, the family and the everyday ties sat: the tenancy or the sale of the dwelling, where belongings went, when local accounts and registrations opened or closed, where dependants lived. Where the evidence points to a stretch of weeks rather than a single day, choose the date the strongest facts support, record why, and then use it consistently across every schedule and every country's return. An inconsistent split date is what turns a straightforward move year into a query.
My bonus was paid after I left but earned before, so where does it go?
Allocation follows the period the payment was earned in, not the date it landed in the account. A payment made after residence ended for work done while resident is generally dealt with as belonging to the earlier period, and a payment received early for later work runs the other way. The mechanism matters more than the label on the payslip. Obtain the terms of the award, being the period it covers, the conditions attached and when they were met, then allocate on that basis and keep the document in the file. Deferred awards, notice pay and accrued holiday pay each need this treatment separately.
Can both countries treat me as resident for the same months?
Yes, and it happens often, because each system applies its own definition to the same facts. The result is an overlap in which the same income sits within charge twice. That is what treaties and credit mechanisms exist for: a treaty may give one country the better claim over the overlapping period, and where it does not settle the position, relief comes as a credit for the other country's tax. What you cannot do is pick a split date that makes the overlap disappear. Prepare both returns from the same dated facts, identify the overlap precisely, and claim relief for it explicitly rather than hoping it passes.
Do I file one return or two for the year I moved?
In most systems, one return for the tax year, prepared on two bases within it. That is the part people find confusing: the year remains a single year with a single filing, and the split lives in the schedules rather than in the number of returns. Expect the return to need a statement of the residence period, income allocated between the two parts, and credits computed by reference to the resident portion. Where the other country's tax year begins on a different date, you will still have two national returns covering overlapping stretches of the same months, and reconciling those is a separate job.
What is the US exit tax?
A charge that applies when a US citizen renounces or a long-term permanent resident gives up their status and meets one of the covered-expatriate tests — an income test, a net-worth test, or a failure to certify five years of compliance. A covered expatriate is treated as having sold worldwide assets on the day before expatriation, and Form 8854 is what reports the position. The tests turn on figures that are indexed, so they are read for the year of expatriation. See Form 8854.
How do families with assets in two countries handle inheritance?
With paperwork built for both systems rather than one. In practice that means wills that work where each asset actually sits, an executor with authority a foreign bank or land registry will accept, clearance certificates before the estate distributes so the executor is not left personally exposed, and an estate tax exposure calculation done while the person is alive and can still act on it. Doing it afterwards costs more and forecloses most of the options. See cross-border wills and trusts.
