Implementing UK and EU T+1 recommendations

Background and scope

UK Accelerated Settlement Taskforce (AST) published the implementation plan in February 2025, outlining 12 critical and 26 highly recommended actions to ensure an orderly transition to T+1. On 3 July 2025, EU T+1 Industry Committee launched the High-Level Roadmap outlining 51 high, 6 medium and 2 low recommendations.

How do the UK and EU T+1 recommendations compare?

While regulations for a T+1 environment have yet to be finalised, both UK and EU recommendations serve as the basis for regulations and should be adhered to by market participants as best practice or explain applicability. The public authorities may use the recommendations as a base in developing formal regulation. Due to the proximity of the region and the similar timing of T+1 transition, it is important to understand the key overlaps and differences.

Forvis Mazars’ commitment to your success

Our team possesses in-depth technical knowledge of the UK / EU T+1 requirements, as well as practical implementation experience supporting clients as part of their T+1 adoption across the US, Canada and Mexico. Through our experience, expertise and network, we can support through the different phases of your T+1 implementation journey, as highlighted below.

We bring together highly skilled consultants who support clients throughout the full lifecycle of T+1 programmes, from strategic assessment to hands-on delivery paired with SME support from industry and functional experts across many specialisms (technology, process and controls, regulations) as required.

T+1 implementation support