Closed consultation
Draft revised guidance on our approach to assessing merger efficiencies
Consultation description
The CMA has been delivering a programme of work to embed our  – pace, predictability, proportionality, and process – across our merger control function.
In January 2026, we launched a review into our approach to the assessment of rivalry-enhancing efficiencies in mergers. We are now consulting on proposed updates to our guidelines.
We have published:
- draft revised guidance, which is intended to replace the text currently in paragraphs 8.2 to 8.27 of our Merger Assessment Guidelines
- a consultation document, which summarises the key changes proposed in the draft revised guidance
We have also published the responses to our call for evidence.
Documents
Updates to this page
Published 3 June 2026