Place of effective management: when a foreign founder still triggers German corporate tax

If you live abroad and your GmbH is registered in Germany, your company owes German corporate tax. Full stop. Your personal residence outside Germany does not change that. The § 10 AO "place of effective management" question, which dominates international-tax commentary, is a separate problem that arises in three other situations. Mixing them up costs foreign founders thousands of euros in surprise tax bills and, worse, audit risk on a parent company that never expected to file in Germany.

This article maps the actual decision lines.

The misconception that costs the most

The default rule is in § 1 Abs. 1 KStG: a corporation is subject to unlimited German corporate tax if either its Geschäftsleitung or its Sitz is in Germany. § 4a GmbHG forces every GmbH to fix its Sitz in Germany in its articles of association. That alone closes the residency question. There is no path under company law where a GmbH has its Sitz outside Germany. The Sitz hook is binary, automatic, and cannot be avoided by managing the company from abroad.

Founders I talk to from the UK, the US, Israel, and India consistently arrive at the same wrong intuition: "I don't live in Germany, so my company shouldn't owe German tax." That intuition would be correct for an LP or Inc. set up in another jurisdiction. It is wrong for a German GmbH. The corporate tax rate of 15 percent under § 23 KStG applies to your worldwide income regardless of where you sleep. Plan for it from day one.

What § 10 AO actually says

The statutory text of § 10 AO is one sentence: "Geschäftsleitung ist der Mittelpunkt der geschäftlichen Oberleitung." Everything else comes from case law and the BMF circular of 5 February 2024 (BStBl 2024 I S. 177), which finally consolidated the prior Verwaltungsauffassung into the Anwendungserlass.

The BFH's foundational ruling in I R 22/90 (23 January 1991) locates the Mittelpunkt where the persons authorised to represent the company actually conduct Tagesgeschäfte — daily operations, not shareholder-level resolutions. The BMF circular of 5 February 2024 carries that into administrative practice: home offices count, service-provider offices count, multiple locations of equal weight create multiple Geschäftsleitungs-Betriebsstätten. The Geschäftsleitung "wandert mit dem Geschäftsführer" if no fixed office hosts the decisive activities.

That mobility is the trap. It cuts both ways.

Three scenarios where § 10 AO becomes decisive

Scenario A: German GmbH, founder lives abroad

The most common setup. A founder in San Francisco or Tel Aviv owns the GmbH and acts as Geschäftsführer remotely. The GmbH is unbeschränkt körperschaftsteuerpflichtig because its Sitz is in Germany. Whether the founder ever boards a plane to Frankfurt is irrelevant for the company's tax residency. Where it can still matter: if the GmbH's actual place of effective management sits abroad (at the GF's home office), the relevant DBA tie-breaker (typically Art. 4(3) OECD-MA, or a competent-authority procedure in newer DBAs) may allocate corporate residence to the GF's state and substantially reduce the German tax base. Document the operational footprint either way. The GF-Vergütung itself usually attracts no German Lohnsteuer for a non-resident GF without German workdays; Article 16 OECD-MA allocates directors' fees separately.

Scenario B: Foreign parent, German activity

A US Inc. holds shares in a German GmbH and also markets directly into Germany. The founder, resident in California, visits Munich five times a year to meet customers, negotiate contracts, and sign deals. This is where the BFH ruling in I R 54/16 of 23 October 2018 reshapes the analysis. The court held that an organ of a foreign capital company can qualify as a ständiger Vertreter under § 13 AO, triggering limited German corporate tax on the foreign company. No Betriebsstätte is required.

Before that decision, the lower courts followed the "Organ-Theorie", under which an organ's representation authority excluded simultaneous classification as a representative. The BFH rejected that view. The Luxemburg dental-gold AG in the underlying case became beschränkt KSt-pflichtig in Germany because its director regularly travelled to Germany to anbahnen, abschließen and abwickeln gold transactions. The Vorinstanz at FG Rheinland-Pfalz (1 K 1685/14, 15 June 2016) had followed the Organ-Theorie line and ruled for the taxpayer; the BFH reversed on the Finanzamt's Revision.

For foreign founders selling into Germany through a parent entity, the threshold is not "does my director live here" but "does my director sustainably conduct essential business in Germany." Nachhaltigkeit is the keyword. A one-off trip is fine. Five trips a year with contracts signed locally is not.

Scenario C: Foreign company de-facto managed from Germany

A founder incorporates a UK Ltd or Delaware Inc. to avoid German company law, then runs it from a Berlin home office. Decisions, instructions, and contract signing all happen in Berlin. Under § 1 Abs. 1 KStG via the Geschäftsleitung hook, the foreign entity becomes unbeschränkt körperschaftsteuerpflichtig in Germany on its worldwide income, subject to DBA tie-breakers. This is the scenario where § 10 AO does the heavy lifting on its own, and the BMF 5 February 2024 circular makes clear that a manager's home counts as a place of management when no other location can claim it. The audit consequence is heavy: when the Finanzamt finds retroactive German residency, it typically demands a steuerliche Anfangsbilanz and treats the entry under § 12 KStG, so plan for retroactive filing obligations and Entstrickungs-effects on transferred assets.

What protects you in an audit

The 5 February 2024 AEAO update tightened the documentation expectation. Under § 90 Abs. 2 AO, the burden of proof for cross-border circumstances sits with the taxpayer. In practice that means three things:

• Travel and presence records. Calendar entries, flight bookings, hotel receipts that show where the GF was when decisions were taken. Maintained contemporaneously, not reconstructed.
• Decision documentation. Board resolutions, signed contracts, and email instructions dated and located. If the director gives instructions from London, the trail should show London.
• Office and infrastructure. A genuine office at the company's Sitz, or a documented service-provider arrangement with named contacts. A registered-agent address with no physical activity inside it does not survive audit scrutiny.

In the foreign-founder mandates I see, two failures repeat. Founders either keep no calendar records and then cannot prove that contracts were not signed in Berlin, or they assume that a Delaware seat alone protects them from German residency when in fact they run the company from a Charlottenburg sublet. The Finanzamt does not care about the Delaware filing; it cares about where the Tagesgeschäft actually happens. Build the documentation habit before it matters, not after the audit letter arrives.

Bottom line

A German GmbH owes German corporate tax automatically. Foreign residence does not change that. § 10 AO matters when a foreign parent operates in Germany, when a foreign company is de-facto run from Germany, or when a director's regular activity in Germany pulls a foreign company under § 13 AO. The three scenarios have different remedies; none of them go away by ignoring them. Plan the corporate-tax footprint before incorporation. Documentation of where management actually happens is the single artefact that decides a cross-border audit, so build the habit from day one.