A founder who has worked through the Qualifying Free Zone Person tests tends to believe the tax question is settled. The licence is current, the substance is real, the de minimis calculation is tracked monthly. The UAE position is clean.
None of that answers the question this article is about. Whether your company has become taxable in Spain, Germany or France is not decided in the UAE, by a UAE regulator, under UAE law. It is decided in the customer's country, under that country's domestic law, as limited by the treaty between the two states. A free zone licence is not a shield against it and was never intended to be.
What a permanent establishment does to you
If your UAE company has a permanent establishment in a treaty country, that country may tax the profits attributable to it — not your worldwide profits, but the slice the establishment generated, determined as though it were a separate enterprise dealing at arm's length with the rest of your group.
In practice: an unplanned corporate tax registration, an attribution exercise requiring accounts for a business unit you never treated as one, and — because these things surface late — several open years to regularise at once, with penalties and interest on each.
The architecture sits in two articles. Article 5 defines what a permanent establishment is; Article 7 says the other state may tax business profits only to the extent they are attributable to one. No permanent establishment, no taxing right over your trading profits — which is why the Article 5 tests deserve more attention than they get.
The four tests, in order
These follow the Spain–UAE Convention. Other European treaties use the same OECD skeleton, but thresholds differ — so never carry a conclusion from one country to another.
Test 1: A fixed place of business
The primary test: a fixed place through which the enterprise's business is wholly or partly carried on. "Fixed" means permanence and a link to a geographic point, not ownership — you do not need a lease. A permanently allocated desk inside a client's premises can qualify, and so can an employee's home office, if the company effectively has it at its disposal and the work is done there habitually.
This is the test that catches remote hiring. A UAE company that engages its first salesperson in Madrid and lets them work from home indefinitely has created a factual question it usually has not asked.
Test 2: The construction threshold
A building site or installation project creates a permanent establishment only if it lasts more than twelve months under the Spain–UAE Convention. The figure is treaty-specific: several European treaties use six months, and some use three for supervisory activity.
The trap is arithmetic. Duration runs on the project, not on your continuous presence, so demobilising over a summer does not reset the clock — and commercially connected projects can be looked at together.
Test 3: The dependent agent
Even with no fixed place at all, a permanent establishment arises where a person acts on behalf of the enterprise and habitually exercises authority to conclude contracts in its name. The person need not be an employee: an agent, consultant or local partner can trigger it.
Two words carry the weight. Habitually excludes the isolated deal but is not a high bar once a pattern exists. Authority to conclude is where self-assessments go wrong — the question is one of substance, and a person who negotiates every material term while a signature is applied in Dubai as a formality is exercising that authority in fact.
A signature block in Dubai does not relocate a negotiation that happened in Madrid.
The treaty excludes the genuinely independent agent acting in the ordinary course of their own business — but that exclusion is narrower than it appears. An agent working almost exclusively for one principal, on that principal's instructions and at that principal's risk, is not independent in the sense the treaty means, whatever the contract calls them.
Test 4: The preparatory or auxiliary exclusion
The escape hatch. Activities of a preparatory or auxiliary character — storage, display, purchasing, collecting information — do not create a permanent establishment even through a fixed place.
It works only where the activity is genuinely remote from the profit-making function. An office that gathers market intelligence is auxiliary; one that also nurtures the client relationships producing the revenue is not. Where the local activity is essential to what the business sells, the exclusion falls away entirely — not proportionately.
The same rule points the other way
A foreign company can equally create a permanent establishment in the UAE, and since the introduction of UAE corporate tax that has a domestic consequence. Article 14 of Federal Decree-Law No. 47 of 2022 sets out the UAE's own definition on the same three pillars. For a group with entities on both sides of the corridor, the same secondment can create an establishment in either direction, depending on who directs the work and bears the risk.
Two practical misconceptions
"We have no office there, so we have no exposure"
Premises are one route of four. The dependent agent test requires no premises at all — only a person and a pattern of behaviour. A UAE company with no European footprint on paper, whose sales manager lives in Valencia and closes deals there, has a weaker position than one with a small registered office doing genuinely auxiliary work.
"Our people don't sign anything, so no agency arises"
Signature location is evidence, not proof. If the local person sets price, agrees scope, and hands over a document that is countersigned unchanged, a tax authority will look past the formality — and the burden of showing otherwise will sit with you, years later, with whatever contemporaneous evidence you happened to keep.
What we recommend
The discipline we suggest for maintaining QFZP status works here too, applied per country rather than per entity. For each European country where the company has people, projects or agents, a short annual memo recording:
- Who acts for the company there, under what contract, and on whose instructions
- Whether any fixed place is at the company's disposal — including home offices used habitually
- For projects, start and expected end dates against that treaty's specific threshold
- Where negotiation and pricing authority genuinely sits, with supporting evidence
- Whether the auxiliary exclusion is being relied upon, and why it holds
Two to three pages per country. Its value is not the document — it is that writing it forces someone to ask the questions while the answers can still be changed. A dependent agency identified in advance can be restructured; the same pattern found by a tax authority three years later cannot.
One caution on mechanics. Definitions in older treaties have in many cases been modified by the multilateral instrument, which tightened the agency test and added anti-fragmentation rules. Whether that has happened for any given pair of countries depends on the positions both states took, and should be checked against the consolidated text rather than assumed.
The honest summary
Permanent establishment risk is rarely the product of aggressive planning. It is what happens when a company grows into a market faster than its structure does — a first local hire, a project that overruns, a consultant who becomes indispensable. Each step is sensible on its own, and the cumulative position is nobody's job to notice.
It is also, unusually, an exposure that responds well to being looked at early. Almost every one of these patterns can be arranged differently at the point of hiring or contracting, at little commercial cost. Very few can be, once the tax authority has written to you.
Is this your situation?
Besocis advises on exactly these questions across the UAE–Spain corridor. A short, confidential call will tell you whether you have an exposure worth acting on — and whether we are the right firm for it.
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