ESMA Completes T+1 Rulebook as EU Settlement Switch Nears
European Union – October 27, 2026 -- The EU will switch to T+1 settlement on 11 October 2027, and the European Securities and Markets Authority (ESMA) says the regulatory framework is now complete. ESMA is calling on market participants to finalise technical preparations, assess readiness across their entire ecosystems and start testing across the trading and settlement chain as soon as possible.
First compliance deadline for allocations and confirmations falls on 7 December 2026
Investment firms and their clients must comply with the new allocation and confirmation requirements from 7 December 2026. From that date, the amended RTS on Settlement Discipline makes two things mandatory:
- electronic, standardised communication channels and international messaging standards;
- machine-readable communication methods, except during temporary technical disruptions.