A large number of Estonian companies are owned by people living in Spain, and the pitch that brought most of them there was the same: no tax on retained profit. That part is true. What is often left out is that Spain has its own view about which companies are Spanish, and that view does not depend on where you registered.
The rule that decides everything
Article 8.1 of the Spanish corporate income tax law treats a company as tax resident in Spain if its sede de dirección efectiva - its effective place of management - is in Spanish territory. Where the company was incorporated does not enter into it.
The Spanish tax authority has ruled directly on this pattern: a sole shareholder who is also the director, resident in Spain, working from home in Spain. The conclusion was that the company's effective management could well be located in Spain, which would make the Estonian OÜ a Spanish tax resident, liable to Spanish corporate tax on its worldwide income.
If that happens, Estonia's deferral of tax on retained profit stops being useful. Spain taxes profit as it is earned. You do not get the Estonian treatment because the company is Estonian; you get it because the company is genuinely managed from Estonia.
What makes management look Spanish
There is no single test, and the assessment looks at substance. The factors that matter:
- Where the person who makes the real decisions is physically located
- Where board decisions are actually taken, as opposed to where they are minuted
- Where contracts are negotiated and signed
- Where the day-to-day operations are run from
- Whether the company has any presence in Estonia beyond a registered address and a contact person
A one-person consultancy, incorporated in Estonia, whose owner has lived in Valencia for three years and does all the work from there, has a weak case for Estonian management and a strong exposure in Spain. That is not a loophole being closed; that is the rule working as intended.
Permanent establishment, separately
Even if the company escapes being treated as a Spanish tax resident, it can still create a permanent establishment in Spain: a fixed place of business through which it operates. A home office you work from every day can qualify. The consequence is narrower than full residence - Spain taxes the profit attributable to that establishment rather than everything - but it still means a Spanish filing obligation the founder did not plan for.
Modelo 720, which catches almost everyone
This one is separate from the company entirely and applies to you personally. A Spanish tax resident holding assets abroad above €50,000 in a category must declare them on Modelo 720, and shares in a foreign company count. Your holding in an Estonian OÜ goes in the block for participations in foreign entities, whether or not the company ever paid you a dividend.
The penalty regime was reformed after the EU Court of Justice ruled against the original one in 2022. Voluntary late filing before any enquiry now carries a materially smaller sanction than being caught. If you have never filed it and should have, filing late on your own initiative is significantly cheaper than waiting.
When the structure genuinely works
Estonian companies are not a trap for Spanish residents. They work well where the substance matches the form:
- The business genuinely operates from Estonia or across several countries rather than out of one Spanish flat
- There are other people involved, and decisions are not all taken by one person sitting in Spain
- You are moving, or split your time genuinely rather than nominally
- The company serves EU-wide customers and Estonia is the operational base, not just the registry entry
Where it does not fit, the honest answer is that a Spanish company may be the cheaper structure once the Spanish filings, the adviser you need in Spain, and the risk of a reassessment are counted.
What you need on each side
This is the part people get wrong by trying to save on one of the two. An Estonian accountant keeps the Estonian company compliant: bookkeeping, VAT, payroll, the annual report. They cannot file your Spanish personal return or advise you on Spanish residence. A Spanish adviser handles that side and generally cannot file in Estonia.
You need both, and they need to be aware of each other. The expensive failures are almost always the ones where each side assumed the other was handling it.
Frequently asked questions
Can I run an Estonian company while living in Spain?
Yes, but Spain may treat the company as a Spanish tax resident if its effective management is in Spain. Article 8.1 of the Spanish corporate tax law looks at where decisions are actually made, not where the company is registered.
Does the Estonian 0% tax on retained profit apply if I live in Spain?
Only if the company is genuinely managed from Estonia. If Spain treats it as a Spanish tax resident, Spain taxes the profit as it is earned and the Estonian deferral gives you nothing.
Do I have to declare my Estonian company on Modelo 720?
If you are a Spanish tax resident and your foreign assets in that category exceed €50,000, yes. Shares in a foreign company are reportable whether or not a dividend was paid.
Do I need an accountant in both countries?
In practice yes. An Estonian accountant keeps the company compliant in Estonia and cannot file your Spanish return; a Spanish adviser handles residence and personal reporting and cannot file in Estonia.
TagsEstonian company Spainsede de direccion efectivaModelo 720tax residence
General information, not tax advice
This article reflects Estonian law as it stands on the date shown. Rules change and individual circumstances differ - confirm your own position with us before acting.