Two questions get mixed together here and they have very different answers. The first is what a Spanish resident has to declare about an Estonian company, and that is mostly one informative form with a March deadline. The second is where the tax on the company's profit actually lands, and for a lot of readers the honest answer is Spain. Take them in the order people worry about them, ending with the one that matters most and gets asked least: whether the Agencia Tributaria would treat your Estonian OU as a Spanish company outright
Modelo 720 after the CJEU judgment in C-788/19
The Court of Justice ruled against Spain on 27 January 2022 in case C-788/19. Spain responded with Ley 5/2022, de 9 de marzo, published in the BOE on 10 March 2022 and in force the following day. Four things went. The 150% proportional penalty on unjustified capital gains, in disposiciones adicionales 1 and 2 of Ley 7/2012. The bespoke Modelo 720 penalty regime in disposicion adicional 18 LGT, with its 5,000 euros per item of data and 10,000 euro minimum. Article 39.2 LIRPF, which made the related gains imprescriptible. And article 121.6 LIS, the corporate equivalent.
Read that carefully, because a great deal of published Spanish-language content has not caught up. The confiscatory penalties were struck down. The filing obligation itself was not. Modelo 720 still exists, still has a March deadline, and a shareholding in an Estonian OU still goes on it.
What applies now is the ordinary regime for informative declarations in articles 198 and 199 LGT. Failure to file, or late filing after a requerimiento: 20 euros per item of data, minimum 300, maximum 20,000. Filed late but voluntarily, article 198.2 halves everything to 10 euros per item, minimum 150, maximum 10,000, and the article 199 penalty does not apply on top. Incorrect or incomplete data in a return filed on time: 20 euros per item, minimum 300 under article 199. The AEAT treats each of the three blocks as a separate obligation, so penalties run per block.
One residual exposure deserves stating plainly. Undeclared foreign assets can still be assessed as an unjustified capital gain under the ordinary article 39.1 LIRPF, now subject to the normal four-year limitation period. That is a very different animal from an unlimited look-back, but it is not nothing.
Which Modelo 720 block an Estonian shareholding falls into
Three blocks, three separate obligations, each with its own 50,000 euro threshold measured at 31 December:
- Block 1, article 42 bis RGAT: accounts held with financial institutions abroad, reported under key C
- Block 2, article 42 ter RGAT: securities, rights, insurance and annuities deposited, managed or obtained abroad, under keys V, I and S
- Block 3, article 54 bis RGAT: immovable property abroad and rights over it, under key B
A shareholding in an Estonian OU is block 2, article 42 ter, key V — valores o derechos representativos de la participacion en cualquier tipo de entidad juridica. It is not optional, and it is one of the most commonly missed filings in this population. The window is 1 January to 31 March of the following year, so assets held at 31 December 2026 are declared by 31 March 2027. After that, you re-declare a block only if its value rose by more than 20,000 euros over the last figure, or if you disposed of an asset or closed an account.
Valuation follows the wealth tax rules in article 16.1 LIP at 31 December. If the last approved balance sheet was audited with a favourable opinion, you use the valor teorico from it. Otherwise you take the greater of nominal value, theoretical value from the last approved balance sheet, or the result of capitalising at 20% the average profits of the last three financial years. The third is the trap: average profits of 10,000 euros capitalise to 50,000 on their own, so a profitable OU crosses the threshold while its book equity is nowhere near it.
Modelo 721 for crypto, and Modelo 232 which is not yours
Modelo 721 exists and is separate from Modelo 720. It was approved by Orden HFP/886/2023, de 26 de julio, on the legal basis of article 42 quater RGAT inserted by RD 249/2023, itself deriving from the 2021 anti-fraud law. It applied for the first time to tax year 2023, filed between 1 January and 31 March 2024, and the window is the same every year after that.
Two things are worth knowing. The scope is narrower than most people assume: the obligation arises only for virtual currencies held with a third party providing safeguarding of private cryptographic keys, so self-custodied wallets are outside Modelo 721. On the threshold, the figure quoted universally in Spanish practice is 50,000 euros in aggregate at 31 December, with the same 20,000 euro increase rule for later years. Treat that figure as unconfirmed: we could not extract it verbatim from the AEAT material or the Orden, both of which defer to article 42 quater RGAT.
Modelo 232 comes up constantly in content aimed at this audience, and usually wrongly. It is filed by entities, not by individuals. The filers are corporate income tax payers, non-resident income tax payers with a permanent establishment in Spain, and entities under the income attribution regime constituted abroad with a presence in Spain. A Spanish-resident individual does not file Modelo 232 for transactions with their own Estonian OU. There is no such obligation for a natural person, so most readers of this article can stop at that sentence.
It bites only if you also own or control a Spanish company that transacts with the Estonian one. They are then related parties through common control, and the Spanish SL may have to file: over 250,000 euros with one related party in the period at market value, over 100,000 euros for certain specific operations, or more than 50% of turnover for same-type transactions valued by the same method. The tax haven limb, which has no de minimis, does not reach here, because Estonia is not on Spain's list of non-cooperative jurisdictions. The deadline is November for a calendar-year taxpayer.
Spanish CFC for an individual is article 91 LIRPF
This is where a lot of published Spanish content cites the wrong statute. For a Spanish-resident individual the governing provision is article 91 LIRPF (Ley 35/2006), not article 100 LIS. Article 100 LIS applies to Spanish companies holding foreign subsidiaries. The tests are materially identical, but an article aimed at individual OU owners that cites only article 100 LIS is quoting the corporate rules at a natural person.
Two conditions, both of which must be met. Control: a participation in capital, equity, results or voting rights of 50% or more, held directly or indirectly, alone or together with related persons and entities, including a spouse and relatives to the second degree. A sole shareholder sits at 100%, so this limb is always satisfied. Low taxation: the tax actually paid by the foreign entity on the relevant income is less than 75% of what Spanish corporate tax would have charged on the same profits.
Here is the straight answer to the question readers actually have. An Estonian OU that retains its profit pays 0% Estonian corporate tax, and 0% is below 75% of the Spanish 25% rate, that is below 18.75%. The low-tax condition is met on every euro of retained profit. The deferral that is the entire commercial appeal of the Estonian structure is precisely the thing that triggers the Spanish test.
What gets imputed depends on the company. Article 91.3 lists the passive categories — property income, income from participations and from transferring capital to third parties, capitalisation and insurance, intellectual property and image rights, technical assistance, leasing, derivatives, and financial or service activity with related Spanish parties that generates deductible expenses. Article 91.4 disapplies them where together they come to less than 15% of total income, with credit and financial activity imputable regardless.
Article 91.2 is the provision that decides most Estonian cases. Where the foreign entity does not have the corresponding organisation of material and human means to obtain its income, the entirety of its income is imputed, not only the passive categories, and including income from recurring operations. An OU with no Estonian staff, no Estonian premises and no Estonian operations falls squarely inside it, and the 15% de minimis does not rescue a company caught there.
The escape is article 91.14: the regime does not apply where the entity is resident in another EU or EEA member state, provided the taxpayer proves that its incorporation and operation respond to valid economic reasons and that it carries on economic activities. Estonia qualifies, so the exemption is available in principle. Two points of honesty. It is a two-limb test and both limbs must be proved. And the burden is expressly on the taxpayer. A pure holding or invoicing OU managed from Spain with no Estonian substance will fail it.
The bigger risk: article 8.1 LIS and the sede de direccion efectiva
CFC imputation is the baseline outcome. The worse one is that the Agencia Tributaria treats the Estonian company as Spanish tax resident outright. Article 8.1 LIS makes a company Spanish resident if any one of three things is true: it was constituted under Spanish law, its registered office is in Spain, or its sede de direccion efectiva is in Spanish territory, meaning the place where the direction and control of the whole of its activities sits.
The third limb stands on its own. It does not matter that the company is registered in Estonia with an Estonian address and contact person: if a Spanish resident directs and controls it from Spain, the criterion is met on its own terms. The DGT has addressed this exact fact pattern in a binding consulta on an Estonian-resident company whose sole shareholder and director works from home in Spain, holding that the sede de direccion efectiva may be located in Spain. We could not retrieve the consulta number or date, and we are not going to invent one. Ask your asesor to pull the reference.
What gets examined in practice is not a published AEAT checklist. It is the synthesis practitioners work from, drawn from the case law on the sede de direccion efectiva:
- Where board meetings are physically held and where the minutes are signed
- Where the director habitually works and lives
- IP addresses and geolocation of logins to banking, accounting and e-Residency portals
- Where contracts are negotiated and signed, and by whom
- Who actually operates the bank accounts, and where the signatories are
- Whether the Estonian presence is a registered-address service or real premises, and whether anyone in Estonia holds decision-making authority
- Where customers and suppliers are located, and what correspondence, email headers and telephone records show
If Spanish residence is established, the OU becomes a Spanish corporate income tax payer on worldwide income, with the obligation to register, file Modelo 200, keep Spanish accounts and pay Spanish corporate tax, plus surcharges and penalties for the years it did not. And the treaty will not rescue you the way people assume. The Spain-Estonia convention was signed in Tallinn on 3 September 2003, in force from 28 December 2004 and applying since 1 January 2005. For individuals article 4 gives the usual cascade. For companies, article 4(3) contains no automatic place-of-effective-management tie-breaker. The competent authorities must endeavour to agree, having regard to place of effective management and place of incorporation, and if they do not, the company is not entitled to the benefits of the convention at all. That is dual residence with no relief mechanism, after a procedure that can run for years.
One distinction Spanish-language content routinely blurs. A separate presumption of Spanish residence exists for entities in a territory of nil taxation, under article 6 TRLIRNR. Estonia is not a nil-tax territory and that presumption does not apply to an Estonian OU. Article 8.1 LIS is not a presumption at all; it is a factual test about where the company is actually run.
Permanent establishment, if residence holds
Suppose the company keeps its Estonian residence. It can still have a Spanish permanent establishment under article 13.1.a) TRLIRNR and article 5 of the Spain-Estonia treaty, and be taxed in Spain on the income attributable to it. The two classic triggers are a lugar fijo de negocios, typically the director's Spanish home used as the operating base, and a dependent agent habitually concluding contracts in Spain in the company's name. Spanish doctrine supports the view that a non-resident professional's Spanish home can constitute a permanent establishment from the first day, but be clear about its status: that is general doctrine applied by analogy, and we did not find a DGT consulta specifically on permanent establishment for an Estonian OU. In practice the three exposures stack rather than compete — Spanish corporate residence is the worst case, a permanent establishment the intermediate one, article 91 imputation the baseline — and a Spanish resident running an OU alone from Spain typically faces all three at once.
Dividends, and why the Estonian 22% is not creditable
Dividends from an Estonian OU are rendimientos del capital mobiliario for a Spanish resident and go into the base imponible del ahorro. The 2026 scale runs 19% to 6,000 euros, 21% from 6,000 to 50,000, 23% from 50,000 to 200,000, 27% from 200,000 to 300,000 and 30% above 300,000. The 30% band came in with Ley 7/2024, de 20 de diciembre, with effect from 1 January 2025, and is unchanged for 2026.
On the Estonian side, distributed profit bears 22%, charged as 22/78 of the net distribution, in both 2025 and 2026. The reduced 14/86 rate and the 7% withholding on dividends to natural persons were abolished from 2025, the withholding surviving only where a company redistributes dividends received before 31 December 2024 that had been taxed at 14/86. If you have seen 24% quoted for 2026, it is stale: that reflected a temporary security tax the Riigikogu abolished on 19 June 2025 before it took effect.
Now the part that costs real money and that nobody is told at incorporation. The Estonian 22% is not creditable against your Spanish tax, for three independent reasons. It is a corporate income tax on the distributing company, not a withholding deducted from your dividend. Treaty article 23 lets Spain credit income tax paid in Estonia by that resident, and tax paid by a separate legal person is not tax paid by you. And Estonia levies no withholding tax on dividends to non-resident individuals out of profits taxed at 22/78, so there is no source-state tax on the dividend for Spain to credit. Treaty article 10 caps source taxation at 5% or 15%, but those are ceilings Estonia does not use.
Work the arithmetic on 100 euros of pre-distribution profit. Estonia takes 22. You receive 78, and Spain charges the full savings rate on it with no credit, which for a typical taxpayer is roughly 21% to 23%. The combined effective burden lands somewhere around 38% to 40%. The same income earned through a Spanish SL and distributed, with the domestic deduccion por doble imposicion, comes out around 21% to 23%. For a Spanish resident who intends to distribute, an Estonian OU is materially worse than a Spanish SL, not better. The structure has an arithmetic advantage only while profit genuinely stays inside the company, and retention is exactly what article 91 LIRPF was built to catch.
Where our work stops
We are Estonian accountants. We do not give Spanish tax opinions, we do not file in Spain, and nothing above is a filing position for your Renta. A Spanish filing position needs a Spanish asesor fiscal, and that work belongs before anything is incorporated rather than two years afterwards. What we do is the Estonian side: the OU's books and annual report, the Estonian filings, the substance documentation that article 91.14 and article 8.1 LIS will eventually be judged on, and the figures your Spanish adviser will ask for — equity at 31 December, the last approved balance sheet, three years of profit for the capitalisation test, and the distribution history.
Frequently asked questions
Do I have to declare an Estonian company on Modelo 720?
Yes, if the block it sits in exceeds 50,000 euros at 31 December. A shareholding in an Estonian OU is block 2, article 42 ter RGAT, reported under key V. The window is 1 January to 31 March of the following year, and valuation follows the wealth tax rules, including the capitalisation of average profits at 20%.
Were the Modelo 720 penalties abolished?
The confiscatory ones were. After CJEU case C-788/19 and Ley 5/2022 the 150% proportional penalty, the bespoke penalty regime in disposicion adicional 18 LGT and the unlimited look-back are gone. The ordinary regime in articles 198 and 199 LGT applies: 20 euros per item of data, minimum 300, maximum 20,000, halved for voluntary late filing.
Do Spanish CFC rules apply to an Estonian company?
They can. For an individual the rule is article 91 LIRPF, not article 100 LIS. Control is 50% or more including related persons, and the low-tax test compares foreign tax to 75% of the Spanish charge. An OU that retains profit pays 0%, so the test is met. Only the article 91.14 EU exemption takes it out, and the taxpayer must prove both limbs.
Can I run an Estonian company from Spain?
Not safely. Article 8.1 LIS makes a company Spanish resident if its sede de direccion efectiva is in Spain, and that limb stands alone regardless of where the company is registered. If it applies, the OU becomes a Spanish corporate taxpayer on worldwide income and must file Modelo 200. The Spain-Estonia treaty has no automatic tie-breaker for companies.
Is the Estonian 22% creditable against Spanish tax on dividends?
No. It is a corporate tax on the distributing company rather than a withholding from your dividend, treaty article 23 only credits tax paid by the Spanish resident, and Estonia withholds nothing on dividends to non-resident individuals. The combined burden on distributed profit lands around 38% to 40%.
Do I file Modelo 232 for my Estonian company?
Not as an individual. Modelo 232 is filed by corporate income tax payers, non-residents with a Spanish permanent establishment, and certain foreign attribution-regime entities. It bites only if you also control a Spanish company that transacts with the Estonian one, and then the Spanish company files it, not you.
Tagsdeclaring an Estonian company in SpainModelo 720 Estonian companySpanish CFC Estonian OUsede de direccion efectiva EstoniaEstonian dividends Spanish tax
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.