--- title: "Living between Ireland and Spain while keeping your Dubai company" url: https://www.boruconsulting.com/blog/living-between-ireland-spain-uae-company-tax-residence category: "Taxation Strategy" author: "Ruairi Laughlin-McCann" published: 2026-10-14 modified: 2026-10-14 --- # Living between Ireland and Spain while keeping your Dubai company > A UAE entrepreneur wanting to live between Ireland and Spain arrives with a careful day count: Ireland's 183-day and 280-day rules, Spain's 183 days. The real exposure is not where the person is resident but where the Dubai company is managed from, because running it from Dublin or Madrid can make it resident too. ## Key Takeaways - Ireland counts your days two ways. Under section 819 of the Taxes Consolidation Act 1997 you are tax resident if you spend 183 days there in a tax year, or 280 days across two consecutive tax years with at least 31 days in each, and a day counts if you are present at any time during it. Someone who keeps each single year modest can still cross the 280-day line over two. - Spain counts them differently and does not split the year. You are resident if you spend more than 183 days in Spain in the calendar year, and sporadic absences are counted towards that total unless you prove tax residence in another country. You are also resident if your main centre of economic interests is in Spain, or, by presumption, if your spouse and minor children live there. - Keeping the UAE base real is the rebuttal, and it has its own day count. To rebut Spanish residence you need to prove UAE tax residence, which means a UAE tax residency certificate, and that certificate needs genuine UAE presence of 183 days, or 90 days with a qualifying home or business. Time spent in Ireland and Spain is time not spent anchoring the UAE position. - The real exposure is the company, not the person. Running the Dubai company from Dublin can make it Irish tax resident through central management and control, and running it from Madrid can make it Spanish tax resident through place of effective management under the Spanish Corporate Income Tax Law. A clean personal day count does nothing to prevent either. - Validating a plan means testing the part nobody asked about. Most people arrive confident about their own days and silent on the company. The company's residence, and the risk of creating a permanent establishment where the founder actually works, is usually the live exposure, and it is decided by where decisions are taken rather than where the licence was issued. ## The plan that sounds watertight The enquiry that prompts this note arrives in a recognisable shape, and it arrived again this week. A founder who runs a company from Dubai, holds UAE residence, and wants to spend parts of the year living between Ireland and Spain. He has done his homework. He can recite Ireland's 183-day rule and its 280-day two-year rule, and Spain's 183 days, and he has built a plan around how many nights he will spend in each. He does not want to restructure anything. He wants a professional to confirm the plan is sound and to flag anything he has missed. It is a good instinct, and the day count is usually the part he has right. The part he has missed is almost always the same, and it is not about his days at all. It is about his company. A business run from a laptop can be perfectly tax-efficient in the UAE and quietly acquire a second tax home in the country its owner is sitting in, and no amount of careful personal day-counting prevents that. The person validating his plan has to validate the thing he did not ask about. So this note takes the plan seriously on its own terms, the Irish rules, the Spanish rules, and the UAE base that holds the whole thing up, and then turns to the exposure that the day count cannot reach. ## Ireland counts your days two ways Irish tax residence for individuals sits in section 819 of the Taxes Consolidation Act 1997, and it runs on two separate tests. Fail to plan for the second and the first gives false comfort. The first is the single-year test. You are resident in Ireland for a tax year, which is the calendar year, if you are present there for 183 days or more. A day counts if you are present in the State at any time during that day, so an afternoon arrival and a morning departure are two days, not none. That is stricter than the midnight rule some other countries use. The second is the look-back test, and it is the one that catches the careful. You are also resident if you spend 280 days or more in Ireland across two consecutive tax years, counting the current year and the one before it, provided you are there at least 31 days in each year. Days in a year of 30 or fewer are ignored for this test. The published example is blunt: 140 days one year and 150 the next is 290, so you are resident in the second year, even though neither year reached 183 on its own. A founder who tells himself he spends "under six months, every year" can be Irish resident on the two-year arithmetic while believing each single year keeps him safe. Residence is also not the end of the Irish analysis. Stay resident for three consecutive years and you become ordinarily resident, a status that then follows you for three years after you leave, and the scope of what Ireland taxes turns on residence and domicile together. For a non-domiciled individual the remittance basis can narrow the charge, but that is a second question that only matters once the day count has already made you resident. ## Spain counts them differently and does not split the year Spain's rule looks similar and behaves differently, which is exactly how people get caught holding a plan that works for one country and not the other. You are tax resident in Spain if you spend more than 183 days in Spanish territory during the calendar year. The sting is in how the days are counted: sporadic absences are added to the total unless you can prove tax residence in another country, usually with a tax residency certificate from that country's authorities. A long weekend out of Spain does not reset the count; it is folded back in unless you can show you were tax resident somewhere else. Spain also has no split-year treatment, so residence is decided for the whole calendar year, not from the date you arrive or leave. Days are not the only route in. You are also Spanish resident if the main centre or base of your economic activities or interests is in Spain, directly or indirectly, whatever your day count. And there is a presumption, which you can rebut but have to actively rebut, that you are resident if your spouse who is not legally separated and your dependent minor children habitually live in Spain. A founder who parks the family in a Spanish home while he moves around has handed the Spanish authorities a presumption to start from. One point of relief, and it is a real one. The UAE is not on Spain's current list of non-cooperative jurisdictions, so the harsher rule that applies to tax havens, under which Spain can demand proof of 183 days in the haven itself, does not apply to a UAE resident. A UAE residency certificate can rebut the sporadic-absences count in the ordinary way. That makes the UAE base worth more here than it would be from a blacklisted jurisdiction, which is the next point. ## The UAE base you have to keep real The whole plan leans on the UAE being the person's genuine tax home, and that is not a formality either. UAE residence is one thing; a tax residency certificate that other countries will accept is another, and it has its own day count under Cabinet Decision No. 85 of 2022 and Ministerial Decision No. 27 of 2023. For treaty purposes, the kind of certificate that rebuts a Spanish or Irish claim, the Federal Tax Authority looks for 183 days of physical presence in the UAE in the relevant period. There is a domestic 90-day route for someone with a permanent home or a business or employment in the UAE, but the solid, treaty-grade certificate is built on presence. The mechanics are set out in the note on [UAE individual tax residency and the certificate it does not automatically give you](https://www.boruconsulting.com/blog/uae-individual-tax-residence-90-day-rule). The arithmetic then becomes uncomfortable. Every day in Dublin or Madrid is a day not spent anchoring the UAE certificate, and the plan quietly asks the calendar to do three jobs at once: stay under the Irish lines, stay under the Spanish line, and still put enough presence into the UAE to hold the certificate that makes the first two safe. It can be done, but only if the UAE presence is treated as a floor to protect rather than a residue of whatever time is left over. ## The trap is the company, not you Here is the exposure the day count never touches, and the reason validating a plan means more than checking nights. A company is tax resident where it is managed, not only where it is registered, and a founder who runs his Dubai company from wherever he happens to be sitting can give it a second residence without ever noticing. In Ireland, a company that is not Irish-incorporated is still Irish tax resident if its central management and control is exercised in Ireland. That is a test about where the real strategic decisions are taken, the principle examined in the note on [where central management and control actually places a company](https://www.boruconsulting.com/blog/central-management-control-corridor-residence). A founder taking his Dubai company's decisions from a desk in Dublin for a chunk of the year is doing exactly what that test looks for, and an Irish-resident company pays Irish corporation tax, 12.5% on trading profits and 25% on the rest. Spain reaches the same place by a slightly different road. Under the Spanish Corporate Income Tax Law, Ley 27/2014, a company is Spanish tax resident if it is incorporated in Spain, has its registered office in Spain, or has its place of effective management in Spain. Effective management is where the business is really run from, so a Dubai company effectively managed from Madrid is prima facie Spanish resident and within Spanish corporation tax at the general 25% rate, unless the UAE-Spain treaty, in force since 2007, resolves the residence the other way. The treaty tie-breaker is a safety net, not a plan, and it is only reached once there is already a conflict to resolve. Running alongside both is the permanent-establishment risk. Even if the company stays UAE resident, the founder working from Ireland or Spain can create a taxable presence of the company there, a fixed place of business or a dependent agent concluding contracts, which hands that country a slice of the profits regardless of the company's residence. The exposure the founder cannot see is that his own working location is a corporate tax fact, not just a personal one. ## The three rulebooks, side by side The regimes are easier to hold together in a table than in the head. | Jurisdiction | When you are personally resident | When your Dubai company becomes resident | | --- | --- | --- | | Ireland | 183 days in a tax year, or 280 days across two consecutive years with at least 31 in each; present any part of a day | Central management and control exercised in Ireland; 12.5% on trading profits, 25% on the rest | | Spain | More than 183 days in the calendar year, sporadic absences counted unless residence elsewhere is proven; or centre of economic interests; or family presumption; no split year | Place of effective management in Spain under Ley 27/2014; general 25% corporation tax | | UAE | The base you keep: a treaty-grade residency certificate needs 183 days of presence, or 90 with a qualifying home or business | Where it stays resident if genuinely managed from the UAE, and not from Dublin or Madrid | Read across the two right-hand columns and the point lands. The personal tests are about where the founder sleeps; the company tests are about where the founder works. They are not the same question, and the plan that answers only the first leaves the second wide open. ## What the founder had actually missed To close the loop on where this started. The founder's personal plan was, on the numbers, broadly sound. He had the Irish 280-day trap in view, he knew Spain would count his weekends away, and he intended to keep real presence in the UAE. On his own residence, he had done the work. He had not thought about the company at all. He ran it alone, made every decision himself, and assumed that because it was licensed in a free zone and he was careful about his own days, the company was simply "in Dubai". But he intended to spend months working from Dublin and Madrid, taking the company's decisions from both, which is precisely how a UAE company picks up Irish central management and control or a Spanish place of effective management. The risk he had asked us to look for was in his personal day count, where there was little to find. The risk that was actually there was one line up, in the company he had not mentioned, and it was the more expensive of the two. Validating the plan meant telling him about the part he was most sure of. ## Frequently asked questions ### How many days can I spend in Ireland without becoming tax resident? Fewer than you might think, because Ireland uses two tests. You are resident if you spend 183 days or more in a single tax year, which is the calendar year, counting any day on which you are present at any time. You are also resident if you spend 280 days or more across the current and previous tax years combined, provided you are present at least 31 days in each year. So two years of around 140 to 150 days each will make you resident in the second year even though neither year reached 183. Planning only against the single-year figure is the common mistake. ### How does Spain's 183-day rule actually work? You are tax resident in Spain if you spend more than 183 days in Spanish territory in the calendar year, and the critical detail is that sporadic absences are added back into the count unless you can prove you were tax resident in another country, normally with a tax residency certificate. Spain has no split-year treatment, so you are resident or not for the whole calendar year. You can also be resident, regardless of days, if your main centre of economic interests is in Spain, and there is a rebuttable presumption of residence if your spouse and minor children live there. ### Can I keep my UAE tax residency while living in Europe? Only if you keep genuine UAE presence behind it. A UAE residency certificate that other countries will accept for treaty purposes is built on 183 days of physical presence in the UAE in the relevant period, with a narrower 90-day route for someone who has a permanent home or a business there. The more time you spend in Ireland and Spain, the harder that certificate is to support, so the UAE presence has to be treated as a minimum to protect rather than whatever is left after Europe. Without a solid certificate, your rebuttal to a Spanish or Irish residence claim weakens. ### Is the UAE treated as a tax haven by Spain? No. The UAE is not on Spain's current list of non-cooperative jurisdictions, which matters because the harsher anti-avoidance rule, under which Spain can require proof of 183 days of presence in the haven itself, does not apply. A UAE resident can rebut Spain's sporadic-absences count in the ordinary way, by proving UAE tax residence with a certificate. This makes a genuine UAE base more useful against a Spanish claim than a base in a blacklisted jurisdiction would be, but it still depends on the certificate being real. ### Can running my Dubai company from Ireland or Spain make the company taxable there? Yes, and this is the exposure most plans miss. In Ireland, a company is tax resident if its central management and control is exercised there, which is about where the real decisions are taken. In Spain, under the Corporate Income Tax Law, a company is resident if its place of effective management is in Spain. A founder who makes his Dubai company's decisions from Dublin or Madrid for a substantial part of the year can give the company Irish or Spanish residence, and with it Irish corporation tax at 12.5% or 25%, or Spanish corporation tax at the general 25% rate, whatever his own personal day count says. ### What is the difference between my residence and my company's residence? They are decided by different facts. Your personal residence turns on where you are physically present, measured in days under each country's rules. Your company's residence turns on where it is managed from, its central management and control in Ireland or its place of effective management in Spain, which follows where decisions are actually taken. You can be careful about your own days and still move your company's residence by working from one place, because the company's test asks a question about your work, not your nights. A complete plan answers both. ### Could I create a permanent establishment even if the company stays UAE resident? Yes. Permanent establishment is a separate question from company residence. Even if your Dubai company remains UAE resident, your working from Ireland or Spain can create a taxable presence of the company there, through a fixed place of business or your concluding contracts on its behalf as a dependent agent. That gives the country where you work the right to tax the profits attributable to that presence, under the relevant treaty. So the location you choose to work from is a corporate tax fact in two ways, through residence and through permanent establishment, not just a personal one. ### I only want someone to validate my existing plan. Is that enough? Validation is exactly the right instinct, provided it extends to the parts you have not built a plan around. In practice the personal day count is usually the part that is already sound, and the company's residence and any permanent establishment are the parts that are not, because they were never in view. A useful review tests all of it: your Irish and Spanish day counts, the UAE presence behind your certificate, and, above all, where your company is managed from across the year. Confirming the plan you have is only half the job; the value is in the exposure the plan does not mention. --- **Critical advisory.** The people who ask us to check this kind of plan have usually done the hard part already, the day count, and are quietly confident about it. The day count is rarely where it goes wrong. It goes wrong at the company, because a Dubai business run from a laptop in Dublin or Madrid can acquire a second tax residence that no personal day count prevents, and because a UAE certificate only rebuts Spain or Ireland if there is real UAE presence behind it. I spend a fair part of the year walking mobile founders through exactly this, and the ones who end up comfortable are the ones who planned where the company is managed from, not only where they personally sleep. We look at the personal residence, the UAE position and the company together, because they are one question wearing three passports. This note is general information rather than advice on your own affairs, so take advice on the specifics before you act. ## Glossary concepts in this article - [Central Management and Control (CMC)](https://www.boruconsulting.com/glossary/central-management-and-control): The long-standing test that treats a company as tax resident where its real top-level decisions are actually made, rather than where it is registered. - [Permanent Establishment (PE)](https://www.boruconsulting.com/glossary/permanent-establishment): A fixed place of business, or a dependent agent, through which a company carries on business in another country. - [Place of Effective Management (POEM)](https://www.boruconsulting.com/glossary/place-of-effective-management): The place where the key management and commercial decisions needed to run a company are, in substance, made. --- Source: https://www.boruconsulting.com/blog/living-between-ireland-spain-uae-company-tax-residence