Transition to the T+1 settlement cycle in Europe

In summary

• T+1 in Europe refers to a timeframe of 1 business day between the execution of a transaction and its effective settlement.

• The transition to T+1 in Europe is scheduled for 11 October 2027.

• This change imposes an acceleration and increased automation of post‑trade processes.

• It requires close coordination between all market players – industry, regulators and institutions – to ensure a successful transition.

What is T+1?

Following the transition from T+5 to T+3 in France in the 90s and then to T+2 in Europe in 2014, the EU (along with the UK and Switzerland) is now preparing to adopt T+1 in October 2027. The shortening of the settlement cycle is a natural evolution of the financial markets, driven by automation, streamlining and harmonization.

Until now, the compression induced by this movement was calculated in days, but now it will be measured in hours. All steps, from the execution of a transaction to its processing by a CSD (Central Securities Depository), will have to be completed in just a few hours.

European governance to steer the transition

In early 2025, European governance devoted to the transition to T+1 was put in place under the responsibility of the Industry Committee (industry, legislators and regulators) and the auspices of the ESMA.

Its report, published on 30 June 2025 and since supplemented with other documents such as the Handbook of market practices and a guide to tests:

• is the result of 5 months of intense work undertaken by 10 groups covering all facets of  trade and post-trade and affecting all industry players (buy-side, sell-side, custodians, market infrastructures, etc.) and a group (Operational Timetable Coordination Group) tasked with redesigning settlement day to enable the timeframe to be reduced from 27 hours to just a few hours.

• puts forward key recommendations to enable a successful transition to T+1 in October 2027 based on an “Adhere or Explain” approach.

• provides a clear vision of the impacts for all players.

Access the presentation material from the SGSS webinar of 3 March 2026

Key impacts on the financial ecosystem and the role of the night cycle

The night cycle, and in particular the T2S night cycle, is an essential element in settlement processes. Indeed, its optimization algorithms allow maximum efficiency with regard to settlement. It was therefore imperative to be able to retain it within a T+1 environment. The ECB has taken on board the industry’s wishes and will shift its night batches by a few hours to enable participants to transmit instructions.

The recommendations resulting from the work undertaken by the Industry Committee also cover the other players and stem from this night cycle. An instruction should not be settled by the evening of T+1 but early in the day on T+1. The transition to T+1 thus requires multiple implementations by all market players, who must collectively prepare for the October 2027 deadline:

• Greater automation to move towards “real time”

• Higher quality of data from the allocation/confirmation phase

• Rapid and definitive transmission of settlement instructions

• Reduction in corrections made after the fact

• Introduction of new market standards

Beyond the transactions directly affected by the shortening of the settlement cycle (securities transactions executed on a trading platform), it is an entire ecosystem that is impacted, whether by choice or lack of choice:

• The primary fund market

• The securities financing market

• Foreign exchange transactions

The challenges and opportunities of the transition to T+1 in Europe

Challenges

• Optimization of operational processes

• Strengthening of IT infrastructures

• Risk management and coordination between all market participants

Opportunities

• Efficiency gains through automation and digitalization

• Harmonization of practices: being outside the scope of “mandatory T+1” does not mean it cannot be adopted voluntarily. It is likely that activities not concerned will see merit in aligning themselves with this new cycle.

The transition to T+1 is not without its challenges. Speed, quality, monitoring and commitment across the board are the watchwords for a successful transition.

T+2 vs. T+1: what differences?

Key dates

• 18 November 2024: publication of the ESMA’s final report, 11 October 2027 is publicly put forward

• 30 June 2025: publication of the Industry Committee report incorporating the recommendations of the industry, the legislators and the regulators to help the transition to T+1

• 14 October 2025: publication of the revised CSDR incorporating the shortened settlement cycle along with the ESMA’s final report containing its proposed amendments to the Delegated Regulation 

• 3 February 2026: publication of the Industry Committee handbook

• March 2026: publication of the T+1 Testing Plan (EU, UK and Switzerland)

• December 2026: implementation of the first set of recommendations

• 11 October 2027: enactment of the T+1 settlement cycle in Europe

SGSS solutions for a successful transition to T+1

The transition to T+1 is a structural transformation of the European financial markets, combining a reduction in risks and the modernization of processes while imposing a major operational adaptation on the entire ecosystem.

As a leading European post-trade player, SGSS supports its clients across the entire operational chain by optimizing trading and middle‑office aspects, securing settlement and accelerating NAV production.