What does ordinarily resident mean on a tax form?
It describes someone habitually resident in a country — settled there as a matter of pattern rather than for one particular period. Some systems use it alongside their residence test, and the reason it exists is that it can widen or narrow the income brought within the charge independently of whether you are resident. That is the part worth understanding. You can satisfy the residence test and still be treated differently depending on this second status, and the difference shows up in what you have to declare rather than in the rate applied to it.
Can I be resident but not ordinarily resident?
In systems that use both concepts, yes, and that combination is usually the point of having a second test. Being resident brings you within the charge; the second status then determines how far that charge reaches. Whether the combination applies to you is worked out from your own history of presence and settlement, not from your nationality or your visa class. Because it depends on a pattern over time rather than on a single year, the evidence that settles it is the calendar and the ties behind it. That record is far easier to keep as you go than to reconstruct later.
Does ordinarily resident change what income I have to declare?
That is precisely what it changes. Everything in a cross-border file hangs off residence, and this status sits on top of it, limiting or extending the income within the charge. Get it wrong and the scope of what you declare is wrong with it, before any rate or relief is considered. It is also the kind of error that does not announce itself, because a return prepared on the wrong scope looks complete and arrives on time. In our files the scope is settled first, in writing, and the computation follows from it.
How is ordinarily resident decided if I move often?
By pattern, which is harder to evidence than a single year of presence. Someone who moves frequently has no obvious settled base, so the question is answered from the accumulated record: where you kept a home, where the family was, where you returned to between assignments, and the day counts behind all of it. A calendar written from memory at filing time rarely survives a query. Keeping a contemporaneous record of movement, and of the ties on each side, does more for a mobile client's file than anything reconstructed afterwards.
How do I show that I stopped being ordinarily resident?
With a break in the pattern, evidenced, rather than with a declaration. Because the status rests on habitual settlement, it does not end simply because one particular year looks different. What matters is the record showing that the settled base moved: the home given up, the family's position, where you now return to, and day counts consistent with all of it. We assemble that as a file rather than as a statement, so the year in which the status is said to have ended can be explained on its own facts.
Does my employer's payroll treatment settle my status?
No, though it is often treated as if it does. A payroll department applies a code so that deductions can be made. It is not adjudicating your residence history, and it usually knows only the part of your situation you told it. Where the payroll treatment and the eventual filing position differ, the filing position governs and the difference has to be reconciled, sometimes across two countries' payrolls for the same months. Checking the code against your actual pattern early is much cheaper than unwinding a year of deductions applied on the wrong basis.
What is a dual-status alien?
Someone who is a US tax resident for part of a year and a non-resident for the rest of it — almost always the year of arrival or the year of departure. You file one return covering both periods, with worldwide income and ordinary deductions for the resident part and US-source income under the non-resident rules for the other. Several ordinary reliefs, including joint filing, are restricted for the year. See dual-status alien.
What is double taxation?
Double taxation means the same income being taxed by two authorities. It comes in two forms: juridical, where two countries each tax one person on one amount, and economic, where two different people are taxed on the same underlying profit — a company on its earnings and a shareholder on the dividend paid out of them. Relief comes from a treaty, a foreign tax credit, or an exemption, and which one applies depends on the income type. How to avoid double taxation sets out the routes.