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A two-level issue, with stakes measured in millions
Permanent establishment is the turning point in the taxation of foreign companies operating in France. For VAT, it determines the territoriality of supplies of services (French Tax Code, art. 259 et seq): if the French structure receives and uses services for its own needs, the transactions fall within the scope of French VAT, with registration, reporting and deduction rights. For corporate income tax, the question is governed by article 209 of the French Tax Code and tax treaties (OECD model, art. 5 and 7): a fixed place of business or dependent agent with authority to bind the company, according to the reading adopted by the Council of State in the Conversant (ValueClick) case of 11 December 2020 (n° 420174).
On the VAT side, the CJEU has developed a stringent analytical framework through five rulings: Dong Yang (C-547/18), Titanium (C-931/19), Berlin Chemie (C-333/20), Cabot Plastics (C-232/22) and Adient (C-533/22). A VAT permanent establishment requires a permanent structure with human and technical resources, which need not be owned by the company but must be controlled 'as if they were its own', and which must allow it to receive and use services for its own needs. Reliance on a local service provider, even if exclusive, is not sufficient: the same resources cannot simultaneously serve both to provide the service and to receive it.
This framework concerns the customer-side permanent establishment, the one that receives the services. VAT is also at stake on the other side, that of the supplier-side permanent establishment, and it is there that the heaviest French assessments arise. For services falling under article 259, 1° of the French Tax Code, the tax is in principle accounted for by the French customer where the supplier is not established in France (French Tax Code, art. 283, 2). But a foreign company that has in France a structure with a sufficient degree of permanence and the human and technical resources enabling it to provide the services it supplies (Implementing Regulation (EU) No 282/2011, art. 11(2)), and that actually intervenes in the transaction (purely administrative support tasks, such as accounting or invoicing, are not enough to establish such intervention: same regulation, art. 53), is not regarded, for the purpose of designating the person liable for the tax, as a taxable person established outside France (French Tax Code, art. 283-0). The reverse charge then no longer applies and the foreign company accounts for French VAT itself. That is precisely the ground on which VAT was assessed in the Conversant case: the Council of State held that, having a permanent establishment in France, the Irish company 'was solely liable for value added tax' on the services supplied, through that establishment, to customers established in France (Council of State, 4 April 2025, n° 461220 and 461310).
The financial scale justifies rigorous upstream analysis. When a permanent establishment is characterised retrospectively by the tax authority, the activity is frequently treated as undeclared: the statute of limitations extends to ten years (French Tax Procedure Code, art. L. 169 for corporate income tax and art. L. 176 for VAT) and the resulting assessments for corporate income tax and VAT are subject to an 80% surcharge (French Tax Code, art. 1728, 1, c). For an international group, the cumulative exposure routinely reaches several million euros. This is precisely the type of case the firm handles, in French and English, from its offices in Paris and Geneva.
Two procedural points are worth knowing before any discussion with the tax authority. First, characterising the activity as undeclared relieves the authority of the prior formal notice and opens assessment by default (French Tax Procedure Code, art. L. 66 and L. 68): the burden of proof shifts, and the company must show that the assessed bases are excessive (art. L. 193). Second, the characterisation is not automatic: it requires two cumulative conditions, failure to file returns within the legal time limit and failure to register the activity with the single business formalities desk (art. L. 176 for VAT, art. L. 169 for corporate income tax), and it is set aside where the company shows an error justifying its failure to meet these obligations, assessed in the light of the level of taxation in the State of the registered office and the exchange of information between the two administrations (Council of State, 7 December 2015, n° 368227).
More than four years after Berlin Chemie, the review comes down to three points. The Court has not changed course: in Cabot Plastics (2023) and Adient (2024) it applied the same test to exclusive toll manufacturers belonging to the same group as their customer, recalling that neither a shareholding nor exclusivity is enough and that the customer must be shown to have the provider's resources at its disposal as if they were its own. These judgments do not reopen cases already decided: in Conversant, ruling after remittal, the Council of State held that CJEU judgments handed down after its 2020 decision were not a new point of law allowing what it had finally decided to be reopened (Council of State, 4 April 2025, n° 461220 and 461310). Finally, the outlook is changing for platforms: Council Directive (EU) 2025/516 of 11 March 2025 ('ViDA') provides for a deemed supplier regime for short-term accommodation rental (thirty nights at most) and road passenger transport facilitated by a platform, which each Member State must apply between 1 July 2028 and 1 January 2030. That regime, not yet applicable, creates a deemed supplier fiction without any need to characterise a permanent establishment of the platform; the Berlin Chemie test continues to govern other situations.
The practical consequence is clear: the test protects a group that genuinely outsources; it does not protect a group whose French teams decide or perform on its behalf. That is what an audit examines, and that is where the defence is built. On the corporate income tax side, where the applicable treaty attributes profits on the basis of the separate and independent enterprise fiction, the permanent establishment's profits are determined following an approach close to the arm's length principle that governs transfer pricing.