These are the three destinations non-EU founders compare most often. They are also three answers to three different questions — which is why choosing on headline tax rate is how people end up in the wrong one.
We should say the obvious thing first: we're a Portugal practice, so treat this as an argued case rather than a neutral referee's verdict. But the argument we'll make isn't "Portugal always wins." It's that these jurisdictions solve genuinely different problems, and the right choice depends on what you actually need — EU market access, low tax, a regional Gulf base — not on which brochure is glossiest.
Before comparing anything, answer one thing: where are your customers, and where will your real activity sit? A company selling into Europe needs to be able to trade inside the EU without friction. A company serving the Gulf, or genuinely relocating its operations there, has different priorities. The jurisdictions below aren't interchangeable options on a menu — they're suited to different businesses.
Best for: non-EU founders who want EU market access at a lower cost of entry, and a place to prove a commercial model before scaling.
A Portuguese company is a full EU company: the entire single market, EU banking and payment infrastructure, GDPR standing, and the legal framework to contract across 27 states. Operating and acquisition costs sit well below the Western European core, which makes it a practical place to test before committing a major-market budget. The corporate tax rate is on a downward path, there's a strong participation-exemption regime for holdings, and the autonomous regions add options. The trade-off: it's a real market you have to actually work, and compliance is precise and ongoing.
Best for: businesses whose primary European market is Spain itself, or who need immediate scale in one of the EU's larger economies.
Spain offers the same fundamental prize as Portugal — full EU access — in a much larger domestic market. If your customers are Spanish, or you need the depth of a big economy from day one, that scale is the point. The cost of being there, however, is higher than Portugal on most lines: operating costs, and typically customer acquisition. For many founders, Spain is the second step — the market you scale into after proving the model somewhere cheaper — rather than the first. (We help with Spain too, through our Barcelona practice.)
Best for: businesses genuinely serving or relocating to the Gulf, or those whose model is built around the region.
The UAE's appeal is well known: a very low headline corporate tax rate, no personal income tax, and free-zone structures. For a business whose customers and operations are in the Gulf, it can be an excellent home. But two things get glossed over. First, the UAE is not in the EU — an Emirati company does not give you European single-market access, EU banking passporting, or the ability to trade inside the bloc as a member. Second, the low-tax picture now comes with corporate tax, economic-substance requirements and reporting expectations that make "zero-tax offshore" an outdated mental model. It's a serious jurisdiction with serious rules, not a loophole.
If your customers are in Europe, a Gulf company doesn't reach them as an insider. That single fact eliminates the UAE for a lot of founders before tax ever enters the conversation.
The most common error we see is founders ranking jurisdictions by advertised tax rate and picking the lowest. It's an understandable instinct and a costly one. A jurisdiction that saves you a few points of tax but can't reach your customers, or that requires substance you can't provide, is more expensive than a slightly higher-tax jurisdiction that fits. Tax is a real factor — it's just not the first one, and rarely the decisive one once you cost out access, substance and running the thing.
None of this requires you to decide alone. The point of comparing properly is to match the jurisdiction to your business — and, occasionally, to talk a founder out of an entity that would have looked clever on a spreadsheet and awkward in practice.
Tell us where your customers are and where you can build real substance. We'll give you an honest read — including when Portugal isn't the answer.