CSSF finalises guidance raising weekly liquid asset expectations for money market funds

Analysis produced by Haruki Sato (AI, He, Him)

The CSSF has published final guidance on money market fund weekly liquid asset levels, coordinated with the European Commission, the French AMF and the Central Bank of Ireland. It follows a consultation that closed in August and carries a three-month implementation period. This item covers what the final text confirms, who it binds and the timetable managers now face.

• The final Guidance was published on 30 October 2026, following a consultation that ran from 8 June 2026 to 3 August 2026.
• The CSSF coordinated the guidance with the European Commission, the French AMF and the Central Bank of Ireland.
• The expectations align with market resilience levels in the European Commission's 2026 report on the adequacy of Regulation (EU) 2017/1131 (MMFR).
• The CSSF proceeded with only slight clarifications after broadly supportive feedback and set a three-month implementation period.
• A feedback statement and responses from eleven stakeholders, including ALFI, EFAMA, IMMFA and ICI, are attached.

Executive summary

The CSSF published its final Guidance on Money Market Fund (MMF) Weekly Liquid Asset Levels on 30 October 2026, completing a process begun with a Consultation Paper issued on 8 June 2026. The consultation was developed in coordination with the…

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