Does an Estonian subsidiary reduce a German company's tax? On distributed profit, by about eight points. An Estonian OU pays nothing on retained and reinvested profit and 22% when it distributes, levied as 22/78 of the net distribution. A German company pays roughly 30% once corporation tax, the solidarity surcharge and trade tax are added together. So on money that eventually comes out, 22% against about 30%. On money that stays in the business, the saving is the whole of the tax for as long as it stays there.
That headline holds only under two conditions, and both are demanding. The income has to be genuinely active under the German CFC rules, and the Estonian company has to have real people and real premises in Estonia. Fail either and the arrangement is not merely neutral, it is worse than doing nothing: Germany taxes the profit at about 30% as it arises, and Estonia still takes 22% when it is finally paid out. The 22% figure has moved twice in two years, the planned rise to 24% having been dropped in September 2025, so confirm the current rate before modelling anything.
Hinzurechnungsbesteuerung: how the German CFC rules reach an Estonian OU
The rules are in AStG sections 7 to 14, recast by the ATAD-Umsetzungsgesetz. Control under section 7 means a German unlimited taxpayer, alone or with nahestehende Personen within section 1(2), holding more than 50% of voting rights, nominal capital, or entitlement to profits or liquidation proceeds, directly or indirectly. The ATAD-UmsG changed this from an aggregate test across all German shareholders to a shareholder-based one, which narrowed it. Section 7(4) still deems persons related where they act by abgestimmtes Verhalten, coordinated conduct, so a group of German founders cannot split a holding and call it unconnected.
The low-tax threshold in section 8(5) was cut from 25% to 15% by the Mindestbesteuerungsrichtlinie-Umsetzungsgesetz implementing Directive (EU) 2022/2523, in force 28 December 2023. It applies to intermediate income arising in the foreign company's fiscal year ending after 31 December 2023, which under section 10(2) means assessment period 2024 for a calendar-year company. Estonia's 0% on retained profit is plainly below 15%. Sentence 3 of section 8(5) requires account to be taken of claims a state grants on distribution, but that was drafted for refund systems such as Malta's and does not rescue Estonia, where the tax is imposed on distribution rather than refunded.
Two things follow, and they pull in opposite directions. Estonia's deferral is what triggers the low-tax test — the very feature that makes the country attractive. But low taxed is not the same as taxed. Germany also requires the income to be passive under the section 8(1) Aktivkatalog. Genuinely active trading income is never caught, whatever the rate. One caveat: no published German ruling squarely holds that Estonia's deferral amounts to low taxation for these purposes. It is the strongly likely reading of the statute, because the burden is measured in the year the income arises, but it is not settled case law.
The Aktivkatalog, and the two entries that catch real businesses
Section 8(1) lists nine categories of active income. Only income falling outside that catalogue is Zwischeneinkünfte and only that can be added back. Agriculture and forestry are clean. So are manufacturing, processing, assembly, energy generation and mineral extraction: a German group running a genuine production or assembly operation in Estonia does not have a CFC problem at all. The trouble is that the two shapes a German group most naturally gives an Estonian subsidiary are both listed as passive on their face.
- Number 4, trade. Passive where the German taxpayer or a related party supplies the goods to the OU or takes them from it. This is the Konzern-Durchhandel trap, and it catches the ordinary case of an Estonian distribution company buying from its German parent. The escape is a qualified business operation with third-party participation in the market
- Number 5, services. Passive if the German taxpayer or a related party supplies the service. An Estonian development, support or back-office team that invoices only the German parent sits squarely inside this. Same escape: structure the OU so that it genuinely serves third parties as well
- Number 6, letting and licensing. Letting real property is passive. Licensing intellectual property is passive unless the OU conducted its own research and development. Parking IP the OU did not create in Estonia produces passive income taxed at 0%, which is precisely the pattern the rules exist to catch
Numbers 3, 7, 8 and 9 cover banks and insurers, dividends within section 8b(1) KStG, gains on participations and reorganisation gains, and they follow the same logic. But it is numbers 4 and 5 that catch businesses with nothing artificial about them. A supply chain that runs parent to subsidiary, or a subsidiary whose only customer is its parent, is not aggressive planning. It is how most groups start. Under the Aktivkatalog it is passive until you build third-party business into it.
The EUR 80,000 Freigrenze, and why one euro matters
Section 9 keeps small amounts out. Passive income below EUR 80,000, provided it is also not more than 10% of gross income, escapes the add-back. That covers a genuine trading company with a modest amount of incidental passive income on the side.
Read the word carefully. Section 9 is a Freigrenze, not a Freibetrag — a threshold, not an allowance. At EUR 79,999 of passive income nothing is added back. At EUR 80,001 the entire amount is caught, not the excess. There is no taper and no partial relief, so a single late royalty or one interest receipt can change the result for the whole year.
What an add-back actually costs
Section 10 computes the Hinzurechnungsbetrag under German rules. It is then taxed without the reliefs a German company would normally expect. Section 8b(1) KStG does not apply to it, and neither does section 9 Nr 7 GewStG, so it is fully taxable. Section 7 sentence 7 GewStG subjects it to Gewerbesteuer, and there is no credit of foreign tax against trade tax. The total burden is about 30%: corporation tax at 15%, the solidarity surcharge, and trade tax of roughly 14%. Against that there is zero Estonian tax to credit, because on retained profit none was paid.
Section 11 does give a Kürzungsbetrag when the profit is later distributed, tracked as a Hinzurechnungskorrekturvolumen, and section 11(5) reduces the trade tax base as well. But look at the ordering. Germany taxes first, at about 30%. Estonia then takes 22% when the money is distributed. Relief for that Estonian tax is imperfect. This is real economic double taxation, not a theoretical risk, and it is the reason a failed Estonian structure costs far more than never having built one.
The substance escape in section 8(2), and the BMF letter that helps
Section 8(2) is Germany's implementation of ATAD Article 7(2)(a) and of Cadbury Schweppes. A foreign company is not an intermediate company for income where the taxpayer proves that it pursues a wesentliche wirtschaftliche Tätigkeit, a substantial economic activity, in its state of seat or management. What that requires:
- Adequate Sachmittel and Personal in Estonia: premises, equipment and staff proportionate to what the company actually does
- The activity exercised eigenverantwortlich, on its own responsibility, by hinreichend qualifiziertes Personal
- Income attributed to the OU only to the extent the arm's length principle is observed
- No Outsourcing: the escape is unavailable where the activity is performed predominantly by third parties
Section 8(3) limits the escape to companies with seat or management in the EU or EEA, which Estonia satisfies, and section 8(4) disapplies it where the state does not exchange information, which Estonia does. The burden of proof sits on the taxpayer throughout, so the documentation has to exist before anyone asks for it.
The final AEAStG, the BMF letter of 22 December 2023, relaxed administrative practice in three useful ways. A home office in Estonia can satisfy the premises and personnel requirement, which matters for small groups that cannot justify a leased office. Adherence to group policies and governance rules does not by itself defeat the independence requirement. And outsourcing to related parties in the same state is permitted, so using an Estonian group company or an Estonian service provider does not automatically trigger the Outsourcing-Verbot. None of that makes a letterbox company work. It makes a genuinely small but real Estonian operation defensible.
Dividends: section 8b KStG and the trade tax that diverges from it
When the OU does distribute, section 8b(1) KStG makes the dividend 95% exempt at the German parent, with 5% treated as non-deductible business expenses under section 8b(5), so effective corporation tax on it is around 0.8%. Section 8b(4) requires a holding of at least 10% at the beginning of the calendar year; a mid-year acquisition that takes the holding to 10% or more is deemed to have occurred at the start of the year. Below 10% it is a Streubesitzdividende and fully taxable.
Trade tax does not follow. Section 8 Nr 5 GewStG adds the exempt amount back unless section 9 Nr 7 GewStG applies, and that requires at least 15%, held actually, with no deeming rule, at the beginning of the Erhebungszeitraum. Following the Court of Justice decision in EV (C-685/16) and the 2020 amendment, the old Aktivitatsvorbehalt was removed, so the activity test is gone; the timing and threshold conditions are not. The practical consequence is that a 10 to 15% holding is corporation-tax exempt but fully trade-taxable.
Two planning points follow. Hold 100%, which most German groups do anyway. And plan the first Erhebungszeitraum: an OU incorporated in the middle of a year cannot satisfy a beginning-of-period holding test in that year, so a distribution in year one may be trade-taxable even though a distribution in year two is not. Germany is in the Parent-Subsidiary Directive, and Estonia levies no dividend withholding tax in any event, so nothing is lost at source.
Place of management migrates with the Geschaftsfuhrer
The most common failure mode is not the Aktivkatalog. It is who actually runs the company. Under AO section 10, the Ort der Geschaftsleitung is the Mittelpunkt der geschaftlichen Oberleitung: where the decisive management will is formed, determined by where the managing directors take the day-to-day factual, organisational and legal decisions. The BFH decision of 20 December 2017 confirms that management migrates with the Geschaftsfuhrer and requires no fixed business facility at all. Combined with AO section 11 on the Sitz and section 1 KStG, seat or place of management in Germany produces unbeschrankte Steuerpflicht on worldwide income.
So an Estonian OU run by a German-resident director from a German home office is German-resident. The result is dual residence, a treaty tie-breaker under Article 4(3), and in the meantime German corporation tax and trade tax on worldwide profit plus Estonian 22% on distribution. Estonia will not release the company, because Estonian residence follows incorporation only and there is no domestic place-of-management test. A 2023 Finanzgericht decision confirmed that a director's home can constitute an establishment. Note the asymmetry: the home office that helps you under section 8(2) is one in Estonia, staffed by someone who lives and decides there, while the same room in Germany hands the tax office a place of management instead.
The honest verdict
An Estonian subsidiary works for a German group when there is a real operation in Estonia and the income is active: production or assembly under number 2, or trade and services structured so that third parties, not just the parent, are the customers. Then section 8(2) is satisfiable, nothing is added back, and the group saves roughly eight points on what it distributes and defers the whole charge on what it retains. For a capital-hungry business reinvesting everything, that deferral is worth real money.
It does nothing for a group that distributes its profit every year and has no Estonian presence beyond a registration. You pay 22% instead of about 30% and buy a second set of statutory accounts, an Estonian accountant, a management board and an extra entity in every filing. For passive income it is actively harmful: 0% is low taxed, section 8(2) is very hard to establish for a pure IP or holding function, the add-back carries trade tax with no foreign credit, and section 8b(1) KStG does not apply to it. And never move an existing profitable function. Section 1(3b) AStG requires the whole Transferpaket to be valued using the hypothetischer Fremdvergleich, with the midpoint of the Einigungsbereich imposed where there is no better evidence and a five-year aggregation rule to stop salami-slicing. That one-off charge routinely exceeds several years of deferral. Build new activity in Estonia; do not move old activity there.
One boundary on our side. We are Estonian accountants. We do not give German tax opinions and we do not file in Germany: a German tax position needs a specialist in Germany, and the analysis above is the work they should do before anything is incorporated. What we do is the Estonian side — the OU's books, its filings, the substance documentation that section 8(2) will eventually be judged on, and the numbers your German adviser will ask for.
Frequently asked questions
Does an Estonian subsidiary reduce German corporate tax?
On distributed profit, by about eight points: 22% in Estonia against roughly 30% in Germany once trade tax and the solidarity surcharge are counted. On retained profit the whole charge is deferred. Both depend on the income being active under the AStG Aktivkatalog and on real substance in Estonia.
Does the Hinzurechnungsbesteuerung apply to an Estonian OU?
It can. AStG section 7 requires German control of more than 50%, and Estonia's 0% on retained profit is below the 15% low-tax threshold in section 8(5). But a charge arises only for passive income outside the section 8(1) Aktivkatalog. Genuinely active trading income is never added back.
Is Estonia a low-tax country under AStG section 8(5)?
On retained profit, yes on the face of the statute: 0% is below the 15% threshold, and the burden is measured in the year the income arises. No published German ruling squarely decides the point, so treat it as the strongly likely reading rather than as settled case law.
What is the EUR 80,000 Freigrenze in AStG section 9?
Passive income below EUR 80,000, and not more than 10% of gross income, escapes the add-back. It is a Freigrenze, not an allowance: at EUR 80,001 the entire amount is caught, not just the excess. There is no taper and no partial relief.
Can I run an Estonian company from Germany?
Not without making it German-resident. Under AO section 10 the place of management migrates with the Geschaftsfuhrer and needs no fixed facility, so a German home office gives Germany worldwide taxing rights while Estonia still charges 22% on distribution. Estonia will not release the company.
Are dividends from an Estonian subsidiary exempt in Germany?
Largely. Section 8b(1) KStG exempts 95%, with 5% treated as non-deductible expenses, provided at least 10% was held at the beginning of the calendar year. Trade tax needs 15% held actually at the beginning of the Erhebungszeitraum under section 9 Nr 7 GewStG, which a mid-year incorporation cannot meet in year one.
TagsEstonian subsidiary German companyHinzurechnungsbesteuerung EstlandAStG CFC rules Estoniaestnische Tochtergesellschaft Steuern
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.