CJEU EU Tax Rulings: What Advisers Need to Know Now

Four significant rulings and legislative moves from late 2022 are shaping how accounting firms and CFOs approach cross-border tax positions across the EU. The Court of Justice of the European Union weighed in on Italian withholding rules for digital property platforms, Portuguese stamp duty on capital-raising, Spanish port authority tax exemptions, and Dutch dividend withholding, while a challenge to the EU energy solidarity contribution added a fifth front. Each decision carries immediate compliance implications that practitioners advising EU-based clients cannot afford to treat as academic.

Italian Withholding on Short-Term Rental Platforms

What the Court Decided

In case C-83/21, the CJEU confirmed that Italian rules requiring providers of property intermediation services, including digital platform operators, to withhold tax and report data on short-term rental transactions carried out by private individuals are broadly compatible with EU law. The freedom to provide services is not infringed by these obligations.

There was, however, one clear exception. The requirement to appoint a tax representative who is resident in Italy was found to be a disproportionate restriction on that same freedom, and the Court ruled it incompatible with EU law. For platforms operating across borders, this distinction matters: the reporting and withholding obligations stand, but the residency condition for tax representatives does not.

Practical Read-Across for Platforms and Their Advisers

Any non-Italian platform active in the Italian short-term rental market that currently uses or has been pressured to appoint an Italy-resident tax representative should review that arrangement in light of this ruling. The withholding and data-reporting framework itself is lawful and must be complied with, but the representative residency condition can be challenged. Firms maintaining cross-border compliance matrices should update their Italy chapter accordingly.

Portuguese Stamp Duty and the Capital Duties Directive

Background to Case C-656/21

A fund management company that ran several open-ended securities investment funds hired four banks to market the funds' shares and attract new capital. The banks' fees were subject to a 4 percent Portuguese stamp duty. When the management company recharged those marketing costs to the funds through management fees, stamp duty applied again. The company argued both levies violated Directive 2008/7/EC, the Capital Duties Directive, which prohibits indirect taxes on capital-raising transactions.

The Court's Reasoning

The CJEU first confirmed that open-ended securities investment funds fall within the Directive's scope, treating them as groups of persons whose members contribute capital to generate profits. It then applied a broad reading of Article 5, finding that the prohibition on taxing capital-raising transactions extends beyond the transactions explicitly listed to cover anything that forms an integral part of the overall capital-raising operation.

Promoting and marketing investment instruments to drive share subscriptions is, the Court held, a necessary step in the issuance process and therefore inseparable from it. Both the stamp duty on the banks' marketing fees and the stamp duty on the recharge of those fees to the funds were ruled incompatible with the Directive.

For fund managers active in Portugal, or those advising clients with Portuguese fund structures, this is a direct basis to reclaim or contest stamp duty levied on comparable arrangements. The window for recovery will depend on applicable Portuguese limitation periods, and advisers should move quickly to assess open years. The EU ViDA implementation and what it means for VAT reporting obligations is a useful companion read for firms reassessing their indirect tax exposure across EU member states.

Spanish Port Authorities and State Aid

The General Court's Findings in T-126/20

Spanish port authorities had long benefited from a partial corporate income tax exemption on major revenue streams such as port fees and income from concessions. Ports in the Basque Country went further, enjoying a full exemption. The European Commission opened a State aid investigation and in January 2019 concluded the regime conferred a selective advantage on the ports that breached EU State aid rules.

Because the exemption predated Spain's EU accession, it was classified as existing State aid, meaning Spain was not required to claw back aid already granted. Spain committed to repeal the exemption from 2020. The Bilbao Port Authority challenged the Commission's decision before the General Court, which dismissed the action.

Why Selectivity Arguments Failed

The Court reaffirmed settled case law: a tax exemption granted on the basis of a company's legal form or the sector in which it operates is generally selective. Objectives external to the tax system, whether preserving international competitiveness, protecting employment, or favouring socially useful organisations, cannot justify a selective regime. The Commission's characterisation of the port exemption as unlawful State aid was upheld in full.

The relevance for advisers extends beyond ports. The ruling reinforces the principle that sectoral or form-based tax advantages are vulnerable to State aid challenge regardless of the policy rationale behind them. Any client benefiting from a preferential tax treatment in an EU member state should have that treatment reviewed against State aid criteria, particularly if it is sector-specific.

Dutch Dividend Withholding and Cross-Border Insurance

The Hertogenbosch Referral

The Dutch Court of Appeals in Hertogenbosch referred preliminary questions to the CJEU concerning dividend income received by a UK-based life insurer from the Netherlands. The insurer paid 15 percent Dutch dividend withholding tax on that income. Had it been a Dutch resident, the effective tax burden would have been zero, because the dividends formed part of unit-linked products linked to UK pension schemes, and in a domestic scenario the income would have been offset by an equivalent increase in the obligation to policyholders.

The referring court asked whether the CJEU's earlier judgment in case C-17/14 applies broadly to all situations where a non-resident receives dividend income from another member state, or whether it has a narrower reach. The answer, when it comes, will affect how member states apply dividend withholding to non-resident financial institutions with liability-matched income structures.

What Firms Should Watch

Pending the CJEU's response, firms advising non-resident insurers or financial institutions receiving Dutch-source dividends should document the economic symmetry between the dividend income and the corresponding policyholder liabilities. If C-17/14 is extended, there may be grounds to contest or recover withholding tax in comparable fact patterns. How Cyprus IIR qualified status fits the EU Pillar 2 minimum tax framework is relevant context for firms mapping their clients' overall EU tax exposure at this moment.

EU Energy Solidarity Contribution: Early Legal Challenge

The German and Dutch Challenge

Following the EU Regulation of October 2022 on emergency intervention to address high energy prices, member states were required to implement a solidarity contribution on surplus profits in the fossil fuel sector, or equivalent national measures, by the end of 2022. On December 28, 2022, the German and Dutch subsidiaries of a US-headquartered oil and gas group filed a challenge before the General Court, arguing the solidarity contribution is legally flawed.

The case is at an early stage, but its existence signals that the legal foundations of the solidarity levy will face scrutiny. Firms advising energy-sector clients in Germany, the Netherlands, or other member states that adopted equivalent measures should track the General Court proceedings carefully. An adverse ruling could open refund or restitution claims; a favourable one for the Commission would confirm the levy's validity and close that avenue.

Key Compliance Actions Across Jurisdictions

A Jurisdiction-by-Jurisdiction Summary

The table below maps each ruling to its primary jurisdiction and the immediate action advisers should consider.

Firms that use crypto accounting software or digital asset accounting software to manage client books across these jurisdictions should ensure their indirect tax and withholding modules can capture the rule changes flowing from these rulings, particularly on the Italian withholding side where platform operators face active obligations.

Source: KPMG EU Tax Centre, E-News 168