Brussels: The rules that decide which corporate marriages live or die in Europe have not been seriously rewritten since smartphones existed. The Commission’s horizontal merger guidelines date from 2004, the non-horizontal set from 2008, and an entire generation of digital, energy and pharmaceutical dealmaking has been judged against frameworks built for a different economy. On 30 April, that began to change. Brussels published a draft of consolidated merger guidelines, the most significant overhaul of EU merger control in more than twenty years, and opened it to public consultation until 26 June.
The headline shift is one of emphasis. The draft folds the old horizontal and non-horizontal texts into a single, far more detailed framework and pushes innovation and dynamic competition to the centre of how the Commission will assess a deal. Where the old guidelines asked mainly whether a merger would raise prices in a defined market today, the new approach asks a broader question about who will compete, and how fiercely, in the years ahead. That reframing matters most in fast-moving sectors where the threat to competition is not a price rise next quarter but the quiet acquisition of a rival that might have grown into a serious challenger.
Just as consequential is the treatment of efficiencies. The draft elevates the balancing of efficiency gains against anticompetitive harm to what it calls an integral part of the assessment, rather than a defence raised late and rarely accepted. Merging companies have long argued that combinations deliver savings, scale and investment that ultimately benefit customers; regulators have long been sceptical that those gains are real or passed on. By giving efficiencies a clearer place in the analysis, the Commission signals a willingness to weigh the upside of consolidation more openly, a move dealmakers will welcome and consumer advocates will watch warily.
The draft also leans hard on evidence drawn from companies’ own files. Ordinary-course internal documents, the emails and board papers written long before any deal was contemplated, are singled out as a key source for establishing market power and testing theories of harm. The message to executives is unambiguous: what your own strategists wrote about a competitor may matter more than what your lawyers argue afterward. That places a premium on documentary discipline and will shape how transactions are prepared from their earliest days.
Reaction has split along predictable lines. To some, the revision is a pragmatic modernisation that reflects two decades of case law and finally lets the Commission judge mergers by the markets that actually exist. To others, the new openness to efficiencies risks softening enforcement at the very moment scale is concentrating across European industry, handing large incumbents a more sympathetic hearing. The Commission rejects the idea that the guidelines loosen control, insisting they sharpen it by making the analysis more transparent and grounded.
The timetable leaves room for that argument to play out. The consultation runs through June, the Commission expects to complete its review in the final quarter of the year, and adoption is likely only in late 2026 or early 2027. Guidelines are not law, and they do not bind courts, but in merger control they function as the map everyone navigates by, telling companies what the regulator is likely to clear and what it will fight. Rewriting that map after twenty years is not a technical housekeeping exercise. It is a statement about how Europe intends to balance competition and competitiveness in the decade ahead, and the next two months will decide how that balance is struck.
