Taxes for Remote Workers and Relocants: How Not to Get Lost in Tax Residence, 183 Days, and Double Taxation
When someone moves abroad, works remotely for foreign clients or employers, or simply spends half the year in different countries, the tax side is usually more complicated than the visa side. In everyday advice, everything tends to be reduced to two formulas: "just do not cross 183 days" and "there are countries where taxes are almost zero." Both formulas are dangerously simplistic. In practice, countries look not only at day counts, but also at tax residence, the type and source of income, domestic rules, and double tax treaties. (Your Europe, OECD)
Below, I am not offering "tax hacks," but a basic framework that helps a relocant stay oriented. This matters especially for people who work for a foreign company, run their own activity, provide services as independent contractors, or combine several income streams. There will be practical detail here too, but only where it can be supported by official tax authority guidance and major cross-jurisdiction references such as PwC and EY. (PwC, EY)
This Is Not Tax Advice
This material is for information purposes only, is not tax advice, and cannot replace tax advice. Remote work and relocation easily create borderline situations: two countries may both treat you as resident, the same income may be classified differently depending on the treaty, and local rules on social contributions, permanent establishment, reporting, and anti-abuse provisions may affect the outcome more than the headline tax rate. So it is safe to use this article as a map of the terrain, but not as a personal conclusion for your own case. (Your Europe, IRS FTC)
In Short: What You Almost Always Need to Check
| What to check | Why it matters | Where you usually look for the answer |
|---|---|---|
| Tax residence | It often determines where a country may try to tax your worldwide income | domestic tax-residence rules and treaty tie-breaker provisions |
| Day count | 183 days often matters, but its meaning depends on the country and the context |
guidance from the local tax authority |
| Type and source of income | Salary, self-employment income, dividends, rent, and capital gains are taxed under different logic | domestic law and the treaty |
| Whether a treaty exists between the countries | It helps determine which country gets taxing rights and how double taxation is relieved | the bilateral tax treaty and official explanations of it |
| How double taxation is relieved | In one country the method is a credit, in another an exemption, and sometimes the relief is limited | domestic tax rules and the treaty |
| Whether a "low-tax regime" is really what it sounds like | Low tax can mean very different things: no personal income tax, territorial taxation, or simply a lower rate | official tax authority guidance and PwC / EY for cross-checking |
Tax Residence: Where the Analysis Starts
The first question is usually not "how much tax is there," but where you may be treated as a tax resident at all. There is no single EU-wide rule that automatically determines tax residence. Your Europe explicitly says that each country uses its own definition, even though in practice many systems often look at whether you spend more than six months a year there. But even in the EU, that is only a starting point, not a universal answer. (Your Europe)
That is why the 183 days rule should not be treated as some law of nature. In Singapore, the official threshold for a foreigner is indeed often linked to 183 days in the preceding calendar year, but there are also separate administrative concessions for three consecutive years and for continuous work that spans two calendar years. In Canada, the CRA stresses that the analysis looks not only at days, but also at a person's ties to the country, the purpose of the stay, and its duration. In the UK, HMRC does not rely on a single threshold at all, but on the full Statutory Residence Test, with automatic overseas tests, automatic UK tests, and the sufficient ties test. (IRAS, CRA, HMRC)
The U.S. example is especially good at showing why 183 days may mean something quite different from what people assume. The IRS uses the substantial presence test not as a simple "183 days in the current year" rule, but as a weighted three-year formula: all days in the current year, one third of the days in the preceding year, and one sixth of the days in the second preceding year. And even if that test is met, an exception based on a closer connection to another country may still apply. In other words, in one major jurisdiction the mechanics alone already break the everyday idea that "half a year means residence." (IRS SPT)
Why 183 Days Matter but Do Not Give an Automatic Answer
There are two different kinds of logic behind 183 days, and people constantly mix them up.
The first is domestic tax-residence law. Each jurisdiction writes its own tests: sometimes it is a simple day count, sometimes a combination of days and ties to the country, and sometimes a set of alternative criteria. The Australian Taxation Office explicitly shows that even spending more than 183 days in Australia does not always make a person an Australian tax resident if their usual place of abode is outside Australia and they do not intend to take up residence there. That is a very useful official reminder: the day count matters, but it does not close the question by itself. (ATO)
The second is the 183 days rule inside double tax treaties for employment income. In the OECD model, this is not a rule about where you become tax resident. It is part of the structure that helps allocate taxing rights over income from employment between countries. And that logic is usually tied not only to the length of presence, but also to additional conditions such as who is treated as the employer and whether the employer has taxable presence or a permanent establishment in the country where the work is performed. In the same OECD model, the article on residence and dual residence is one subject, while the article on employment income and the 183-day rule is another. If you mix these two levels together, it becomes very easy to reach the wrong conclusion, for example to assume that if you stayed less than 183 days in a country, there can be no tax there. That may be false. (OECD)
The practical takeaway is simple: every time you see 183 days, ask two questions. First: is this rule about tax residence, or about the taxation of employment income? Second: does the country also use additional tests, exceptions, ties, habitual-abode criteria, intention-to-reside tests, or special day-counting rules? Without those clarifications, the number alone is not very useful.
Territorial Taxation: What It Means in Practice
When relocants say they are looking for a "territorial tax system," they often mean very different things. In the strict sense, territorial taxation usually means that a country primarily taxes income with a source connected to that country, rather than a person's entire worldwide income. But even such systems rarely mean "you can live there and pay nothing at all."
Singapore is a good official example of how this works in practice. IRAS says that income earned in Singapore is taxable, while for tax residents foreign-sourced income is generally exempt unless it falls under specific exceptions. At the same time, PwC points out an important practical detail: if work is physically performed in Singapore, the income is generally treated as earned in Singapore regardless of where the employer is located or where the salary is paid. So a territorial system does not cancel taxation of work that is actually carried out on the country's territory. (IRAS, PwC Singapore)
That is why the phrase "territorial tax regime" is dangerous when used as a short synonym for "there will be no tax." In one country, part of foreign income may be exempt while local-source income remains taxable. In another, the exemption may work only for a certain structure of income. In a third, personal income tax may truly be absent, but other taxes and special rules for business activity still remain.
Where Taxes Are Lower, and Where the Tax Base Is Simply Different
If you look at countries through the eyes of a relocant, "low taxes" usually breaks down into at least three different categories.
The first category is jurisdictions where there is no personal income tax on individuals in the usual sense. The official UAE portal says that the UAE does not levy income tax on individuals, although VAT, excise tax, and corporate tax still exist. PwC adds an important practical nuance: natural persons carrying on business activity in the UAE may fall within corporate tax once they exceed the turnover threshold, while wages, personal investment income, and real estate investment income are excluded from that calculation. This is a good example of how the statement "there is no personal income tax there" may be true, but still fail to describe the full tax landscape for a relocant. (UAE Government, PwC UAE)
The second category is territorial or source-based systems, where the point is not a zero rate, but the fact that not all worldwide income is taxed. For a relocant, that can sometimes be more useful than a simply "low rate," but only if they really understand what counts as foreign-source income, where the work is physically carried out, and what counts as remittance or local economic activity. Singapore is useful here precisely because the official materials show that such systems may be convenient, but they are not an automatic exemption for remote work. (IRAS, PwC Singapore)
The third category is ordinary countries with non-zero but comparatively lower tax rates or specific special regimes. This is where the large PwC and EY references are especially useful: not as a substitute for the law, but as a way to compare the basic logic across 100+ jurisdictions, see whether there is a treaty network, how double-tax relief is structured, what the local filing rules are, and only then move to the primary law or official guidance of the country in question. For general orientation, that is much more useful than looking only at secondary-blog rankings of "top countries with no taxes." (PwC, EY)
Double Taxation: How It Arises and How It Is Usually Relieved
Double taxation usually does not arise because a state "made a mistake," but because two countries simultaneously have arguments for taxing the same person or the same income. One country treats you as a tax resident and wants to tax your worldwide income. Another treats the income as earned on its territory and also wants tax at source. Your Europe explicitly describes such cases for cross-border workers and notes that bilateral treaties usually remove the problem either by giving a credit for tax already paid, or by exempting the income in the country of residence. (Your Europe)
In the OECD model, this is usually described through the allocation of taxing rights by income type and through separate methods for relieving double taxation. In practical terms, that means the following: first determine which treaty article applies to your income, and only then look at whether the country of residence must grant a credit, an exemption, or some other form of relief. The most dangerous simplification here is to assume that any tax paid abroad automatically reduces your home-country tax by the same amount. That is not always true. (OECD, IRS FTC)
The official IRS page on the Foreign Tax Credit explains the credit logic especially well: if you paid foreign tax and the U.S. also taxes the same income, you may be able to claim either a credit or a deduction, but the credit is available only for taxes that qualify under the rules, and some foreign payments may not qualify. In addition, the treaty rate matters: if the treaty entitled you to a reduced rate, the credit may be limited to that rate rather than the amount actually withheld. The details will differ in other countries, but the broader principle is the same: relief exists, but it works under rules, not under a general idea of fairness. (IRS FTC)
How Not to Pay Tax Twice: A Practical Checking Sequence
The most reliable approach for a remote worker or relocant looks like this.
First, determine tax residence under the domestic rules of each country involved. Do not look only at days, but also at ties, habitual place of living, work pattern, and special exceptions. If two countries both try to treat you as resident, the next step is to look at the treaty tie-breaker rules, if a treaty exists between them. If no treaty exists, you then need to check domestic relief mechanisms separately and assess the real risk of actual double taxation. (Your Europe, OECD, IRS FTC)
Then determine the type of income. Salary under an employment contract, independent contractor income, dividends, rental income, and capital gains almost never sit under the same treaty article. Mistakes here are often more expensive than mistakes in counting days: you may end up reading about the 183-day employment rule even though your income is legally classified in a different way.
After that, check which country treats the income as sourced there under its source rules. For remote work, the employer is not the only thing that matters; what matters also is where the work is physically performed. Singapore is a good example of how a country may treat employment income as local even when the company is foreign and the money comes from abroad. (PwC Singapore)
Then open the specific treaty between the two countries, if one exists, and look at two things: which country gets the primary taxing right over that type of income, and what method of double-tax relief the country of residence must provide. In Europe, the broad pattern often comes down to a credit or an exemption, but the details always depend on the wording of the bilateral treaty. If no treaty exists, then you need to look at each country's domestic rules on foreign-tax relief, deductions, and unilateral relief mechanisms. (Your Europe, IRS FTC)
Finally, collect evidence in advance: travel calendars, tax certificates, payslips, proof of tax already paid, local assessments, and confirmation of tax-residence status. Your Europe specifically warns that, to obtain double-tax relief, you often need to prove both where you are resident and the fact that tax was already paid in the other country. Without documents, even the legally correct position may work badly in practice. (Your Europe)
Short Conclusion
For a relocant, the most useful mental shift is this: first ask not "where is the rate lower?" but "who is actually entitled to tax me, and under what logic?" Only after that does it make sense to discuss whether a country is attractive because it has no personal income tax, a territorial system, or simply a softer rate.
If all of this is reduced to one practical rule, it is this: do not try to solve an international tax situation with the single number 183. To reach a reasonably safe answer, you need to check residence, income source, income type, treaty coverage, and the relief mechanism in sequence. That sequence is what most often helps people avoid paying tax twice where the law actually offers that protection. (OECD, Your Europe, IRS FTC)