Transition vers T+1 : lancement d’une enquête complémentaire à l’enquête de l’EUIC (uniquement en anglais)

Starting from 11 October 2027, CSDR¹ introduces the obligation to migrate from a T+2 settlement cycle to T+1. This is a significant change that requires a review of systems and operational processes across the entire trading and post-trading chain, not just around the settlement layer.

To monitor the level of industry preparedness for the move to T+1 and to have better visibility on the situation within Luxembourg, including on potential points of attention, the CSSF strongly encourages market participants to take part in the voluntary survey. The answers to this survey will be available only to CSSF and ESMA.

• the national competent authorities’ survey

Furthermore, to help in assessing the level of industry awareness and the status of preparation across EU Member States for the move to T+1, CSSF draws the attention of Luxembourg market participants to the launch of:

• the EU T+1 Industry Committee (EUIC) 2^nd readiness survey

We remind that the results of the EUIC survey are anonymous and only available at an aggregated level.

Both NCAs’ and EUIC’s surveys will be running in parallel and is thus open until 9 June 2026.

Broad participation from all financial sectors and EU Member States to both surveys is crucial to get an accurate overview of the preparation status and identify areas needing further attention.

For legal and regulatory details on the T+1 transition, visit the ESMA dedicated webpage.

Learn more about the EU T+1 Industry Committee’s work at their website.