Holding companies in Luxembourg, the Netherlands and other EU jurisdictions spent three years preparing for ATAD 3, the directive that promised to strip tax benefits from entities judged to lack genuine economic substance. That preparation now needs rereading. On 18 June 2025 the EU’s finance ministers, meeting in the Economic and Financial Affairs Council (ECOFIN), formally withdrew the proposal. ATAD 3 will not enter into force in the form that was circulated, and the question for any CFO or in-house counsel managing a cross-border structure is no longer “how do we comply” but “what replaces it, and does our substance still hold up”.
What ATAD 3 was designed to do
ATAD 3 was the European Commission’s third Anti-Tax Avoidance Directive, published on 22 December 2021 and widely known as the Unshell Directive. Its target was the shell company: a letterbox or flow-through entity that holds assets or routes income through a low-tax jurisdiction without the people, premises or activity that would justify the tax treaty and EU directive benefits it claims. Substance, in this context, means the real-world footprint of a company, its own offices, its own bank account, and decision-makers who are genuinely resident and active rather than nominal.
The proposed mechanism worked in stages. A set of “gateway” tests would have flagged entities with mostly passive income, significant cross-border activity and outsourced administration. Flagged entities then had to report substance indicators on their tax returns. An entity that failed those indicators would be presumed a shell and could lose access to double tax treaties and EU directives, though it kept a right to rebut the presumption with evidence of commercial rationale.
Why the Unshell Directive stalled and was withdrawn
Tax directives require unanimity in the Council, and the Member States never reached it. Three objections proved decisive. The compliance burden of proving substance was seen as disproportionate, particularly for smaller holding entities with legitimate reasons to exist. The substance indicators and reporting obligations overlapped heavily with rules already in force, notably DAC6 and the earlier ATAD I and ATAD II. And the rebuttal and exemption mechanisms left too much legal uncertainty for advisors to plan around with confidence. After several redrafts failed to bridge the gap, ECOFIN removed the file from its agenda in June 2025.
What replaces ATAD 3
The policy goal has not disappeared; the instrument has changed. Rather than a standalone directive, the Council intends to fold anti-shell substance principles into a reform of DAC6, the EU’s mandatory disclosure regime, expected to advance in 2026. The working approach is to identify shell entities by expanding DAC6’s existing reporting “hallmarks” rather than building a parallel framework. For multinationals this is a meaningful simplification: it reuses reporting channels and IT systems already in place and avoids duplicate filings, in line with the EU’s broader tax decluttering agenda. The detail of which new hallmarks will be added is still being negotiated.
What the withdrawal means for your structure
The end of ATAD 3 is not a signal to dismantle substance planning. Substance remains decisive under instruments that are very much in force: the general anti-abuse rule in ATAD I, the principal purpose test in modern tax treaties, and the beneficial ownership line of case law from the Court of Justice’s Danish cases, under which tax authorities already deny treaty and directive benefits to conduit entities. National authorities test substance today, with or without ATAD 3. Entities relying on a Luxembourg SOPARFI or a Dutch holding to access the parent-subsidiary or interest-and-royalties directives should treat the next 18 months as time to strengthen their position, not relax it.
The practical step is a substance review of each holding and financing entity against current law and the likely shape of the DAC6 reform, rather than against the withdrawn ATAD 3 text. WVT’s attorneys and tax advisors run that review as part of our corporate tax services, and the right moment to start is before the reformed hallmarks are published, not after. For background on how the disclosure regime has been evolving, our note on the Council’s adoption of DAC9 sets out the direction of travel.
Frequently asked questions
Is ATAD 3 still happening?
No longer in its proposed form. ECOFIN withdrew the Unshell Directive on 18 June 2025 after Member States failed to reach the unanimity that tax legislation requires. The underlying objective, denying tax benefits to entities without genuine substance, survives, but it will be pursued through a reform of the DAC6 disclosure regime rather than a dedicated directive.
What was the Unshell Directive?
The Unshell Directive was the informal name for ATAD 3, the European Commission’s December 2021 proposal to curb the use of shell companies for tax abuse. It set gateway tests to flag suspect entities, required them to report substance indicators such as premises, staff and a local bank account, and would have stripped treaty and EU directive benefits from those presumed to be shells.
Does the withdrawal mean substance no longer matters?
Substance matters as much as ever. Even without ATAD 3, tax authorities deny treaty and directive benefits to entities that lack it, relying on the ATAD I anti-abuse rule, the principal purpose test, and the Court of Justice’s beneficial ownership case law. Holding and financing structures still need genuine decision-making, premises and economic activity to withstand scrutiny.
What is replacing ATAD 3?
The Council plans to integrate anti-shell substance principles into a reform of DAC6, the EU’s mandatory disclosure regime, expected to move forward during 2026. Instead of a separate directive, shell entities would be identified through new or expanded DAC6 reporting hallmarks, reusing existing reporting infrastructure and reducing the duplicate compliance that helped sink ATAD 3.
When will the DAC6 changes apply?
No date is fixed yet. The reform is expected to be tabled in 2026, after which it must clear the Council’s unanimity requirement and allow a transposition period before national rules take effect. Treat 2026 as the year to monitor closely and to bring your structures into line, rather than a hard compliance deadline.
