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Published on 06 February 2025

Circular CSSF 25/871

CSSF

Circular CSSF 25/871 does not overhaul the reporting obligations themselves, but it modernises how the CSSF manages and communicates technical reporting details. This small structural change could have a big impact on efficiency, accuracy, and compliance in Luxembourg’s investment fund reporting.

CSSF Introduces Monthly Reporting Update (Circular 25/871)

What is it?
Circular CSSF 25/871, published on 7 February 2025, updates the existing monthly reporting framework (Circular CSSF 15/627) for Luxembourg investment vehicles. The key change: the annex that covers detailed reporting requirements is now published separately on the CSSF.

Which fund types are impacted?
This applies to all Luxembourg-domiciled investment funds, including:

  • UCITS

  • Part II UCIs

  • SIFs (Specialised Investment Funds)

  • SICARs (Investment Companies in Risk Capital)

What’s new?

  • The annex containing specific reporting details is now maintained as a standalone document on the CSSF site, making it easier to access and update without revisiting the full circular.

Why it matters:

  • More flexible updates: With the annex separate, CSSF can revise technical details—like formats or data fields—without reissuing the whole circular.

  • Improved clarity: Managers can more easily locate and review reporting templates and guidance.

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