Case Study: Tax treaty application in Europe

Tax treaty application in Europe is one of the most commercially significant and procedurally demanding areas of cross-border tax law. When a European tax authority denies treaty benefits - reducing withholding tax rates, exempting capital gains, or recognising a permanent establishment - the financial consequences for a business can reach seven figures within a single fiscal year. This article examines concrete scenarios where treaty application succeeded, failed, or required litigation, and provides a structured framework for international businesses operating across European jurisdictions.

The core legal instrument is the bilateral double tax treaty (DTT), typically modelled on the OECD Model Tax Convention on Income and on Capital. Each European state adapts the OECD model through its domestic ratification process, and the resulting treaty text - together with the domestic implementation act - governs how treaty benefits are claimed. Understanding the gap between the treaty text and domestic administrative practice is where most disputes originate.

This article covers the legal architecture of European DTTs, the procedural mechanics of claiming treaty benefits, the three most commercially relevant dispute categories - withholding tax on dividends and royalties, permanent establishment attribution, and beneficial ownership challenges - and the litigation and mutual agreement procedure (MAP) options available when a tax authority rejects a claim.

European DTTs operate on two legal levels simultaneously. At the international level, the treaty creates binding obligations between contracting states under the Vienna Convention on the Law of Treaties. At the domestic level, each state';s tax administration applies the treaty through its own procedural rules, forms, and evidentiary standards.

The OECD Model Convention provides the structural template. Articles 10, 11, and 12 govern dividends, interest, and royalties respectively, setting reduced withholding tax rates. Article 5 defines permanent establishment (PE), and Article 7 allocates business profits. Article 4 defines tax residence, which is the gateway to any treaty claim. Article 9 covers associated enterprises and transfer pricing adjustments.

The OECD';s Base Erosion and Profit Shifting (BEPS) project, particularly Action 6 on treaty abuse, has been incorporated into European treaties through the Multilateral Convention to Implement Tax Treaty Related Measures to Prevent BEPS (MLI). The MLI introduced the Principal Purpose Test (PPT) - a general anti-avoidance rule that denies treaty benefits where one of the principal purposes of an arrangement was to obtain those benefits. As of the current treaty network, most major European bilateral treaties have been modified by the MLI, and tax authorities across Germany, France, the Netherlands, and the United Kingdom actively apply the PPT in audit contexts.

The EU dimension adds a further layer. The EU Parent-Subsidiary Directive and the Interest and Royalties Directive provide domestic-law exemptions that may overlap with or supersede treaty provisions. However, these directives contain their own anti-abuse clauses, and the Court of Justice of the European Union (CJEU) has confirmed that member states may deny directive benefits where arrangements are artificial. The interaction between directive protection and treaty protection is not always straightforward, and a business relying on one without analysing the other creates a structural gap.

A common mistake made by international clients is assuming that a valid tax residency certificate (TRC) from the home state automatically secures treaty benefits in the source state. In practice, the source state';s tax authority may accept the TRC as a necessary but not sufficient condition, then proceed to examine beneficial ownership, substance, and purpose independently.

Consider a structure where a non-EU parent company holds a Dutch intermediate holding company (BV), which in turn holds operating subsidiaries in Germany and Poland. Dividends flow upward through the Dutch BV to the parent. The Dutch BV claims the benefit of the relevant DTT between the Netherlands and the parent';s jurisdiction to reduce withholding tax on outbound dividends from 15% to 5% or zero.

The Dutch Dividend Withholding Tax Act (Wet op de dividendbelasting 1965) imposes a standard 15% withholding rate. Treaty reduction requires the Dutch BV to file a request with the Dutch Tax and Customs Administration (Belastingdienst), supported by a TRC from the parent';s jurisdiction and documentation of the parent';s status as beneficial owner.

The Belastingdienst has developed a detailed administrative practice on beneficial ownership. Following CJEU rulings on the Danish cases involving conduit structures, the Dutch administration examines whether the intermediate entity has sufficient substance: local management, decision-making authority, and genuine economic activity. A Dutch BV with a single director, no employees, and no office space beyond a registered address will face scrutiny. The administration may issue an information request (informatiebeschikking) requiring the taxpayer to produce board minutes, management contracts, bank account records, and correspondence demonstrating that the BV exercises genuine control over dividend income.

If the Belastingdienst denies the reduced rate, the taxpayer has six weeks to file an objection (bezwaar) under the General Administrative Law Act (Algemene wet bestuursrecht, Article 6:7). If the objection is rejected, the taxpayer may appeal to the Tax Court (Rechtbank), then to the Court of Appeal (Gerechtshof), and ultimately to the Supreme Court (Hoge Raad). The full domestic litigation cycle typically takes three to five years. Legal fees for a contested withholding tax case of this complexity start from the low tens of thousands of EUR at the objection stage and can reach the low hundreds of thousands of EUR through appellate proceedings.

The practical alternative to domestic litigation is MAP under Article 25 of the applicable DTT. MAP allows the competent authorities of both contracting states to resolve the dispute bilaterally. The Netherlands has a generally cooperative MAP practice, and the OECD';s MAP statistics indicate resolution timelines averaging around two years for Dutch cases. MAP does not suspend the obligation to pay the disputed tax, so cash flow management during the procedure is a material business consideration.

To receive a checklist on withholding tax treaty claims in the Netherlands and Germany, send a request to info@vlolawfirm.com

A UK-based technology company provides software development services to German and French clients. The company employs senior sales managers who are resident in Germany and France, work from home offices, and have authority to negotiate and conclude contracts on behalf of the UK entity. The company has not registered a branch or subsidiary in either jurisdiction.

Under Article 5(5) of the OECD Model Convention (the dependent agent PE rule), a PE arises where a person habitually exercises authority to conclude contracts in a state on behalf of an enterprise. The German Income Tax Act (Einkommensteuergesetz, Section 49) and the French General Tax Code (Code général des impôts, Article 209) both incorporate this principle into domestic law. The German Federal Central Tax Office (Bundeszentralamt für Steuern, BZSt) and the French Tax Administration (Direction générale des finances publiques, DGFiP) have each issued guidance on remote-working employees and PE risk.

In practice, the risk crystallises when a tax authority identifies the employee through payroll records, social security filings, or VAT registration data. The authority then asserts that a PE exists, attributes profits to it, and issues a tax assessment for the PE';s share of the enterprise';s income. The assessment may cover multiple years, and interest and penalties under German law (Abgabenordnung, Section 233a) or French law (Livre des procédures fiscales, Article 1727) can add materially to the principal tax liability.

A non-obvious risk is that the PE assertion in Germany or France triggers a corresponding adjustment obligation in the UK. Under Article 7 of the UK-Germany DTT and the UK-France DTT, profits attributed to the German or French PE should be excluded from UK taxable income. However, this relief is not automatic. The UK entity must file an amended return and may need to initiate MAP to secure the corresponding adjustment, particularly if the German or French assessment is contested.

The business economics of this scenario are significant. A software company with EUR 5 million in annual German revenues, facing a PE assessment attributing 20% of profits to Germany at a 30% effective rate, faces a EUR 300,000 annual exposure before interest and penalties. Across a three-year audit period, the total liability can exceed EUR 1 million. The cost of restructuring - establishing a genuine limited-risk distribution entity in Germany or France - typically starts from the low tens of thousands of EUR in legal and accounting fees, making early restructuring economically rational.

The alternative of contesting the PE assertion requires detailed factual evidence: employment contracts, correspondence records, CRM system data showing where contracts were actually concluded, and expert evidence on the employee';s actual authority. German tax courts (Finanzgerichte) and the Federal Fiscal Court (Bundesfinanzhof, BFH) have developed a substantial body of case law on the dependent agent PE, and outcomes depend heavily on the specific contractual and factual record.

A Luxembourg holding company (SA) receives royalty income from a Spanish operating subsidiary. The Luxembourg SA claims the benefit of the Luxembourg-Spain DTT, which reduces Spanish withholding tax on royalties from 24% to 5%. The Luxembourg SA is owned by a Cayman Islands fund.

The Spanish Tax Agency (Agencia Estatal de Administración Tributaria, AEAT) initiates an audit. The AEAT examines whether the Luxembourg SA is the beneficial owner of the royalties within the meaning of Article 12 of the Luxembourg-Spain DTT. The AEAT';s position, consistent with OECD Commentary on Article 12, is that beneficial ownership requires the recipient to have the right to use and enjoy the royalty income free from a contractual or legal obligation to pass it on to another person.

The AEAT finds that the Luxembourg SA has a thin capitalisation, no employees engaged in managing the intellectual property, and a contractual obligation to distribute substantially all income to the Cayman fund within 30 days of receipt. The AEAT denies the 5% treaty rate and applies the 24% domestic rate, issuing an assessment for the difference plus interest under the Spanish General Tax Act (Ley General Tributaria, Article 26).

The Luxembourg SA has two procedural options. First, it may file a reposición (administrative appeal) with the AEAT within one month of the assessment, then escalate to the Tribunal Económico-Administrativo Central (TEAC) within one month of the AEAT';s decision. If the TEAC upholds the assessment, the SA may appeal to the Audiencia Nacional (National High Court) and ultimately to the Tribunal Supremo (Supreme Court). This domestic route takes four to seven years in contested cases.

Second, the Luxembourg SA may request MAP under Article 25 of the Luxembourg-Spain DTT. Spain';s MAP practice has historically been slower than the OECD average, though recent administrative reforms have improved resolution timelines. A key limitation of MAP is that it does not guarantee a result: competent authorities must make a genuine effort to resolve the case, but are not obligated to reach agreement.

A common mistake in this scenario is failing to build substance in the Luxembourg entity before the audit begins. Retroactive restructuring - adding employees, relocating management, or amending distribution policies after an audit notice - is treated with significant scepticism by the AEAT and by Spanish courts. The evidentiary weight of pre-audit substance documentation is substantially higher than post-audit reorganisation.

To receive a checklist on beneficial ownership documentation for European holding structures, send a request to info@vlolawfirm.com

Claiming treaty benefits in Europe follows a broadly consistent procedural pattern, though the specific forms, deadlines, and evidentiary requirements vary by jurisdiction.

The standard claim process involves the following steps:

• Obtain a valid TRC from the competent authority of the residence state, typically valid for the relevant tax year.
• Submit the TRC and a treaty benefit claim form to the source state';s withholding agent or tax authority before or at the time of payment.
• Retain documentation supporting beneficial ownership, substance, and the absence of a principal purpose to obtain treaty benefits.
• File the relevant domestic tax return in the source state if a PE or taxable presence is asserted.

The timing of the claim matters. Most European jurisdictions allow a refund claim for excess withholding tax within a statutory limitation period - typically three to five years from the date of payment. Germany allows refund claims within four years under the Fiscal Code (Abgabenordnung, Section 169). France allows claims within two years under the French Tax Procedure Code (Livre des procédures fiscales, Article R*196-1). The Netherlands allows claims within five years. Missing these deadlines extinguishes the right to a refund, regardless of the merits of the treaty claim.

Electronic filing is increasingly standard across European jurisdictions. The German BZSt operates an online portal for withholding tax refund applications. The French DGFiP processes treaty refund claims through its electronic tax account system. The Dutch Belastingdienst accepts digital submissions for most treaty-related filings. However, supporting documentation - particularly TRCs and notarised corporate documents - often still requires physical or certified submission, and the interaction between electronic filing systems and physical document requirements creates procedural complexity for foreign applicants.

When a treaty benefit is denied, the first formal step in most European jurisdictions is an administrative objection or appeal filed within a short window - typically 30 to 60 days from the assessment. Missing this window forecloses domestic remedies and may affect MAP eligibility. Many international clients underappreciate this deadline, assuming that substantive merits will override procedural failures. European tax courts consistently enforce procedural time limits strictly.

The MAP process under Article 25 of the OECD Model Convention is available where a taxpayer considers that the actions of one or both contracting states result in taxation not in accordance with the treaty. The taxpayer must present the case to the competent authority of its residence state within three years of the first notification of the disputed assessment - a deadline that the MLI has standardised across most European treaties. The competent authority then engages its counterpart in the source state. If MAP does not resolve the case within two years, the taxpayer may request binding arbitration under the EU Arbitration Convention (Convention 90/436/EEC) for intra-EU disputes, or under the MLI arbitration provisions for non-EU treaty pairs.

The EU Arbitration Convention is a significant tool that many international businesses overlook. It applies specifically to transfer pricing disputes and profit attribution disputes between EU member states, and it mandates a resolution within two years of the arbitration panel';s constitution. The convention does not cover withholding tax disputes directly, but where a PE attribution dispute involves profit allocation, it may apply.

The three scenarios above illustrate a consistent pattern: treaty benefit denial is most likely where substance is thin, documentation is incomplete, or the structure';s principal purpose is commercially ambiguous. Managing these risks requires a combination of structural, documentary, and procedural measures.

From a structural perspective, the most durable approach is ensuring that each entity in a cross-border structure has genuine economic substance in its jurisdiction of residence. Substance means local management with real decision-making authority, employees or contractors with relevant expertise, physical premises, and a genuine business rationale beyond tax efficiency. The threshold for substance varies by jurisdiction and by the nature of the income - a holding company receiving passive dividends requires less operational substance than a licensing company receiving royalties from active intellectual property.

From a documentary perspective, the evidentiary record built before an audit is the primary determinant of outcome. Board minutes should reflect genuine deliberation on business decisions, not pro forma approvals. Management accounts should show that the entity retains and deploys income rather than passing it through immediately. Intercompany agreements should be at arm';s length and reflect commercial reality.

From a procedural perspective, the most common and costly mistake is delay. A business that receives an information request from a European tax authority and responds slowly, incompletely, or without legal representation typically faces a worse outcome than one that engages promptly with a clear factual and legal position. European tax authorities are experienced in identifying evasive or incomplete responses, and the audit file created during the information-gathering phase becomes the evidentiary record for any subsequent litigation.

The choice between domestic litigation and MAP involves a genuine strategic calculation. Domestic litigation offers the possibility of a binding court decision that sets a precedent and may be faster in some jurisdictions. MAP offers a negotiated resolution that avoids the uncertainty of judicial proceedings but requires both competent authorities to agree. For disputes involving large amounts - typically above EUR 500,000 - the combination of domestic litigation and parallel MAP is often the most effective approach, as it preserves all options and creates negotiating leverage.

A non-obvious risk in intra-EU structures is the interaction between treaty protection and EU state aid rules. Where a member state';s tax ruling or administrative practice grants treaty benefits on terms more favourable than the general rule, the European Commission may characterise the benefit as unlawful state aid, requiring recovery from the taxpayer. This risk is most acute for taxpayers who have obtained advance pricing agreements or comfort letters from tax authorities in jurisdictions that have faced Commission scrutiny.

We can help build a strategy for managing treaty benefit claims and audit responses across European jurisdictions. Contact info@vlolawfirm.com to discuss your specific structure.

To receive a checklist on MAP procedures and EU Arbitration Convention eligibility for European tax disputes, send a request to info@vlolawfirm.com

What is the most significant practical risk when claiming treaty benefits in Europe?

The most significant practical risk is the denial of beneficial ownership status, particularly for intermediate holding companies with limited substance. European tax authorities - especially in Germany, France, the Netherlands, and Spain - apply a substance-over-form analysis that goes beyond the formal legal ownership of income. A company that receives dividends or royalties but is contractually or practically obligated to pass them on to a parent or fund will typically fail the beneficial ownership test. The consequences include full domestic withholding tax rates applying retroactively, plus interest and penalties. Building and documenting genuine substance before income flows begin is the most effective mitigation.

How long does a European tax treaty dispute typically take to resolve, and what does it cost?

A contested treaty dispute resolved through domestic litigation in Germany, France, or the Netherlands typically takes three to six years from the initial assessment to a final appellate decision. MAP procedures average one to three years, depending on the jurisdiction pair and the complexity of the case. Legal fees for a substantive treaty dispute start from the low tens of thousands of EUR for an administrative objection and can reach the low hundreds of thousands of EUR for full appellate litigation. The EU Arbitration Convention, where applicable, mandates resolution within two years of arbitration panel constitution, making it a faster option for intra-EU transfer pricing disputes. Cash flow impact during the dispute period - including the obligation to pay disputed tax pending resolution - is a material cost that businesses frequently underestimate.

When should a business choose MAP over domestic litigation for a European treaty dispute?

MAP is preferable when the dispute involves a bilateral allocation of taxing rights - for example, a PE profit attribution or a transfer pricing adjustment - where a domestic court in one state cannot bind the other state. In these cases, a domestic court victory may eliminate the assessment in one jurisdiction while leaving the corresponding double taxation in the other jurisdiction unresolved. MAP resolves both sides simultaneously. Domestic litigation is preferable when the dispute turns on a purely domestic legal question - for example, whether a particular payment qualifies as a dividend under domestic law - or when the taxpayer needs a binding precedent for future years. In practice, the two procedures are not mutually exclusive, and pursuing both in parallel preserves maximum optionality while the factual and legal record develops.

European tax treaty application is a field where legal precision, documentary discipline, and procedural timing determine outcomes more reliably than the substantive merits of a treaty position. The three scenarios examined - Dutch withholding tax on dividends, German and French PE risk, and Spanish beneficial ownership challenges - each illustrate how a structurally sound position can fail through inadequate substance, incomplete documentation, or missed procedural deadlines. The legal framework is dense, the administrative practices of European tax authorities are sophisticated, and the financial stakes are high. Businesses operating cross-border in Europe benefit from building treaty compliance into their structural design rather than treating it as a reactive exercise when an audit begins.

Our law firm VLO Law Firms has experience supporting clients in European jurisdictions on tax treaty application, withholding tax disputes, permanent establishment analysis, and mutual agreement procedure matters. We can assist with reviewing existing structures for treaty benefit eligibility, preparing documentation for treaty claims, responding to information requests from European tax authorities, and initiating MAP or EU Arbitration Convention procedures. To receive a consultation, contact: info@vlolawfirm.com