When the European Commission adopted its Tax Simplification Package on 24 June 2026, the presentation was almost entirely about relief: some eight billion euros a year in lower compliance costs, a lighter withholding regime, fewer overlapping calculations, a research allowance to draw investment to the continent. The headline was decluttering, and on that measure the package delivers. Yet read against the decade that produced it, the Omnibus is less a housekeeping exercise than a change of direction. For most of the post-BEPS period the centre of gravity in EU direct tax was anti-abuse, as successive directives layered controlled-foreign-company rules, interest limitations, hybrid-mismatch provisions and a general anti-abuse rule onto national systems, each meant to close a gap. The Omnibus reverses the reflex: its animating question is no longer how to prevent leakage but how to keep capital, financing and research inside the Single Market, and that reversal is where the interesting problems sit.
What The Package Actually Does
The Simplification Package comprises two instruments: a draft Omnibus Directive amending six tax directives, and a recast of the Directive on Administrative Cooperation consolidating the DAC framework into a single text. Four measures carry most of the weight for corporate groups.
The most consequential is the treatment of withholding taxes. The Omnibus would exempt cross-border payments of dividends, interest and royalties between EU companies from source taxation, attacking the conditions, not merely the rate. The minimum-holding thresholds that currently gate the Interest and Royalties Directive and the Parent-Subsidiary Directive would go, as would the prior-authorisation procedures used to verify entitlement before payment; a self-assessment model would replace them, with the FASTER refund mechanism as a backstop where eligibility cannot be confirmed upfront. The Parent-Subsidiary Directive would also extend to pension institutions. On the Commission’s own figures these account for the bulk of the savings, which tells you where the package’s centre really lies.
The second measure reshapes the interest limitation rule. The thirty-percent-of-EBITDA cap becomes uniform and mandatory, the three-million-euro de minimis safe harbour becomes a floor rather than a ceiling, indexed to inflation so that it can only rise, and genuine third-party and market financing is carved out where the borrowing funds the taxpayer’s own activities rather than on-lending within the group. Optional elements that fragmented implementation, the group-escape and carry-forward mechanisms, become mandatory. The defence sector is temporarily excluded, as much a political signal as a tax measure. A uniform mandatory cap also overrides deliberate national choices: the Netherlands, among others, had set its threshold below thirty percent, and would have to loosen a rule it chose to keep tight.
The third measure is the one practitioners should watch most closely, because it is where simplification and sovereignty collide. The Omnibus removes the overlap between the ATAD controlled-foreign-company rules and the Pillar Two global minimum tax by exempting groups within scope of Pillar Two from the CFC regime altogether. The logic is clean: a group already computing top-up tax on low-taxed subsidiaries should not also run a parallel CFC calculation on the same income, a duplication the Commission puts at around a hundred and sixty million euros a year. The two CFC models then collapse into one, the passive-income approach made mandatory and divergent national variants barred.
The fourth measure points in a different direction entirely. A new research-and-development allowance, grafted onto the ATAD, would give full and immediate expensing of qualifying tangible R&D assets as a binding minimum standard across the Union. That an anti-avoidance directive should now house an investment incentive captures the whole shift: the instrument built to protect the base is being asked to grow it. Running in parallel, the DAC recast narrows DAC6, carving out Pillar Two groups from cross-border-arrangement reporting and deleting hallmarks judged to generate more noise than signal.
The Problem Underneath The Relief
None of this is straightforwardly deregulatory, nor a retreat from anti-abuse. The general anti-abuse rule is not weakened; it is extended, reaching beyond corporate tax to withholding taxes and to the Pillar Two top-up taxes themselves, closing an uncertainty lingering since the minimum tax arrived. A subject-to-tax safeguard guards against the withholding exemptions producing double non-taxation where the recipient is taxed nominally at zero. The architecture of protection remains; what changes is its calibration. The Commission’s wager is that several anti-abuse rules were addressing risks that Pillar Two now covers, so that maintaining both is not prudence but duplication.
Yet the same package that widens the GAAR narrows anti-abuse elsewhere. The imported mismatch provisions of ATAD, which denied a deduction where a payment financed a hybrid mismatch further down the chain, are removed outright, the Commission judging them too complex and poorly targeted. Unlike the CFC change, no other instrument steps into the gap: the rule goes not because something else does its work, but because it was hard to apply. That asymmetry, anti-abuse expanding on one front and contracting on another within a single directive, is the clearest sign that usability, not protection, is now the organising principle.
That wager is defensible, but it is a wager, and it exposes the deeper tension in the package. Simplification in EU direct tax is not a technical act: every rule the Omnibus makes uniform is a rule a Member State can no longer tune to its own base, and every carve-out is revenue foregone somewhere. The CFC exemption is the clearest case. Removing the overlap with Pillar Two sounds unanswerable until one remembers that Pillar Two, by design, raises little revenue in many jurisdictions, while CFC charges can raise real amounts. States that built their regimes on the transactional Model B, Ireland, Malta and the Netherlands among them, are asked to abandon it for a mandatory passive-income model and to surrender a working revenue tool on the theory that a lower-yielding one has superseded it. It is no surprise the CFC changes are expected to be among the most contested at Council.
This is the structural difficulty the Omnibus cannot draft its way around. Direct tax measures require unanimity under Article 115 TFEU, which a package with material, unevenly distributed budgetary effects struggles to command. The withholding exemptions shift revenue from source to residence States; the CFC carve-out concentrates its losses on the jurisdictions that used the rules most; the interest-limitation floor constrains States that had set stricter caps. A directive asking twenty-seven treasuries to accept relief whose costs fall differently on each will be negotiated slowly and amended heavily. The incoming Irish presidency has signalled it will prioritise the less contentious DAC recast, treating the Omnibus as a longer project. The Commission’s timeline, adoption by the end of 2028 and first application from 2029, with some elements phased in as late as 2032 and 2037, should be read as an aspiration rather than a schedule.
What it Means for Structuring
For practitioners advising cross-border groups, the Omnibus changes several familiar problems even before it becomes law, because a proposal of this reach reshapes expectations about where the framework is heading. Three areas stand out.
If the withholding exemptions survive in something like their proposed form, the analytical work that goes into holding-company positioning shifts. Much of the substance and beneficial-ownership scrutiny built since the Danish cases exists to secure directive benefits that holding thresholds and authorisation procedures put in question. Strip out those conditions and the entitlement analysis simplifies, but the anti-abuse analysis does not disappear; it migrates to the enlarged GAAR and the subject-to-tax safeguard. The question moves from whether the recipient clears a formal threshold to whether the arrangement, viewed honestly, is one the exemption was meant to reach: the same substance-over-form inquiry, relocated to a different provision. A structure that made sense only because it ticked the holding-period box gains nothing; one with a genuine economic footprint has less to prove.
The CFC and Pillar Two interaction rewards early attention. A group already in scope of Pillar Two stands to shed a parallel CFC computation, real relief, but the carve-out is conditioned in ways that matter at the margin, particularly for groups headquartered in a side-by-side jurisdiction such as the United States, where the exclusion depends on the subsidiary being subject to a qualifying domestic minimum tax. Modelling the interaction now, against a group’s actual footprint, is worth more than waiting for transposition, since the contours of the exemption are where the Council debate will bite.
The R&D allowance, if it holds, belongs in investment planning rather than compliance. A binding minimum standard for immediate expensing changes the after-tax cost of locating qualifying activity in the Union, and it interacts with the enhanced credits several Member States already offer and with the Pillar Two treatment of those incentives. A rare measure in a tax directive that speaks to where to build, not how to report.
The Turn Worth Watching
The Unshell debate ended with the Council conceding that substance could not be reduced to a rule and folding what survived into DAC; the substance criteria Unshell tried to fix in the directive are now left to a Council implementing act, the very return to case-by-case judgement the rule was built to replace. The Omnibus is the same lesson from the opposite side: where Unshell tried to legislate more anti-abuse and failed on complexity, the Omnibus tries to legislate less and will be tested on revenue. Both run into the same wall: in a Union where direct tax moves only by unanimity, every change redistributes something, and the instrument cannot pretend otherwise. What the package makes visible is that the post-BEPS settlement is being renegotiated in favour of competitiveness, and that the anti-abuse edifice of the last decade is now treated as a cost to trim rather than a floor to defend. Whether that renegotiation produces coherent law or a lowest-common-denominator compromise will be decided not in the Commission’s drafting but in the Council’s arithmetic, where the states that gain and those that pay are the same twenty-seven that must agree.
About the Author:
João Rodrigues, Tax Lawyer
João Rodrigues is a tax lawyer specializing in Portuguese and international tax law, with expertise in cross-border structuring, M&A, private equity, investment funds, and financing transactions. He advises corporate clients, financial institutions, investment funds, and private clients on tax-efficient structures, corporate reorganizations, financing arrangements, and international tax matters, including transfer pricing, VAT, treaty access, permanent establishment risks, and Pillar Two. João has extensive experience in transaction support, due diligence, and tax risk assessments, combining technical excellence with practical commercial insight. He holds an LL.M. in International Tax Law from WU Vienna and has authored several publications on international and Portuguese tax law.
