Belgium Permanent Establishment Guide

permanent establishment (vaste inrichting / établissement stable) rules in Belgium — the definition of a PE under Belgian domestic law (WIB 92 art. 229) and under Belgian tax treaties (OECD Model Art. 5), the fixed place of business PE (office, branch, factory, workshop, warehouse), the construction PE (≥12 months — 6 months for certain treaties), the agency PE (dependent agent who habitually concludes contracts in Belgium), the service PE (individuals present for >183 days under the MLI), the anti-fragmentation rules (preventing the splitting of activities to avoid a PE), the taxation of PE profits (attribution of profits to the PE under the Authorised OECD Approach — AOA), the filing obligations for foreign companies with a PE in Belgium (the "niet-inwoner" / "non-résident" corporate tax return, the PE annual accounts), the withholding tax on PE repatriations (the "branch profits tax" — 30% WHT on after-tax profits remitted to the head office), and the PE exit tax (deemed realisation on cessation of the PE in Belgium).

A permanent establishment (PE) is the threshold for a foreign company to be subject to Belgian corporate tax on its Belgian-source business income. The PE rules are based on the OECD Model Tax Convention (Art. 5) as modified by the MLI (Multilateral Instrument). All amounts in Euros (EUR). For related reading, see our Corporate Tax Guide → and Cross-Border Tax Guide →.

Definition of a PE — Domestic and Treaty

Domestic law (WIB 92 art. 229 / CIR 92 art. 229): Belgian domestic law defines a PE broadly — any fixed place of business through which a non-resident company carries on its business in Belgium. The domestic definition includes: (a) a place of management, branch, office, factory, workshop, (b) a mine, oil or gas well, quarry, or other place of extraction of natural resources, (c) a building site or construction project lasting >12 months (6 months for certain treaties), (d) a dependent agent (a person who habitually concludes contracts in Belgium on behalf of the foreign company). The domestic definition is broader than the treaty definition — if there is no treaty (or the treaty does not cover the activity), the domestic definition applies.
Treaty definition (OECD Model Art. 5): Under most Belgian treaties, a PE exists if: (a) there is a fixed place of business (a "duurzame inrichting" / "installation fixe d'affaires"), (b) through which the business is wholly or partly carried on, (c) the place is at the disposal of the enterprise (not merely a temporary presence). The treaty definition includes specific exclusions: (a) facilities used solely for storage, display, or delivery of goods, (b) stock maintenance for storage, display, or delivery, (c) stock maintenance for processing by another enterprise, (d) a fixed place of business for purchasing or collecting information, (e) a fixed place of business for preparatory or auxiliary activities, (f) any combination of the above if the overall activity is of a preparatory or auxiliary character.

Types of PE

Fixed place of business PE: The most common type. A PE arises if there is a fixed (geographical) place of business in Belgium that is at the disposal of the foreign enterprise. Examples: (a) a branch office in Brussels, (b) a factory or warehouse in Antwerp, (c) a farm or agricultural facility, (d) a mine or quarry. The place must be at the disposal of the enterprise for a certain period (typically ≥6 months, though the threshold varies by treaty).
Construction PE: A building site, construction, assembly, or installation project in Belgium constitutes a PE if it lasts for more than 12 months under the OECD Model (6 months under many Belgian treaties, including the US-Belgium treaty). The project is considered as a single project if it is a coherent whole (geographically and commercially). Successive short-term projects (e.g., 5 months each) may be aggregated if they are connected.
Agency PE: A PE arises where a person (natural person or company) acts on behalf of a foreign enterprise and: (a) habitually concludes contracts in Belgium in the name of the foreign enterprise, (b) habitually negotiates the essential elements of contracts that are then concluded by the enterprise without material modification, (c) habitually plays the principal role in concluding contracts that are routinely concluded without material modification. The agency PE is a common issue for foreign companies with Belgian distributors, agents, or representatives. Independent agents (commission agents, brokers) are excluded if they act in the ordinary course of their business as independent agents.
Service PE: Under the MLI and many recent Belgian treaties, a service PE arises if: (a) an enterprise provides services (including consultancy) in Belgium, (b) through individuals who are present in Belgium for a period of >183 days in any 12-month period, (c) the services are for the same project or a connected project. The 183-day threshold refers to the physical presence of the individuals (not the duration of the project). Connected projects are aggregated.

Attribution of Profits to a PE

Authorised OECD Approach (AOA): Belgium follows the Authorised OECD Approach for attributing profits to a PE. The PE is treated as a functionally separate entity — it must be capitalised with "free capital" (equity) and "free financial capital" (debt) as if it were a separate enterprise. The PE's profits are determined by: (a) the functions performed by the PE, (b) the assets used by the PE, (c) the risks assumed by the PE, (d) the capital allocated to the PE.
Transfer pricing between PE and head office: Transactions between the PE and the head office (or other parts of the enterprise) must be priced on an arm's length basis. Belated reporting of intra-group transactions to the PE may trigger a PE assessment. The transfer pricing documentation requirements (master file and local file) apply to PEs if the total related-party transactions exceed €1,000,000 (goods/services) or €100,000 (intangibles/management fees).

Compliance and Branch Profits Tax

Filing obligations: A foreign company with a PE in Belgium must: (a) register with the KBO/BCE (the Crossroad Bank for Enterprises) — obtaining an enterprise number and a VAT number, (b) file a corporate tax return (the "niet-inwoner" / "non-résident" corporate tax return) within 6 months of the PE's accounting year-end, (c) file annual accounts with the NBB/BNB (the National Bank of Belgium), (d) file VAT returns (monthly or quarterly) if the PE makes taxable supplies in Belgium.
Branch profits tax (Bijkomende belasting / Impôt supplémentaire): When the PE's after-tax profits are remitted to the head office (the "repatriëring" / "rapatriement"), a 30% withholding tax (the "branch profits tax" / "belasting op de bijkomende roerende voorheffing") applies. The tax is calculated as 30% of the after-tax profit (the net profit after corporate tax). The tax is due at the time of the repatriation (or at the end of the year, whichever is earlier). The branch profits tax can be reduced or eliminated under the applicable tax treaty (many treaties reduce the rate to 5–15% or provide an exemption).
PE exit tax: When a PE ceases its activities in Belgium (the PE is closed), a deemed realisation of all PE assets and liabilities takes place — the capital gain is subject to corporate tax (25%). The exit tax is due immediately. The PE must file a final tax return within 30 days of the cessation decision.

For related reading, see our Corporate Tax Guide →, Cross-Border Tax Guide →, and Tax Filing Procedures Guide →.