The move to T+1 settlement in Europe is now little more than a year away. With the UK and EU expected to transition in October 2027, what was once a future consideration is now firmly in the implementation phase.
To date, much of the focus has been on the implications for equities and other listed securities. For the funds industry, however, the impact is less direct but no less significant. Mutual funds are not themselves in scope of the regulation, yet they operate within a wider market structure that is changing at pace. As securities settle faster, the expectations placed on post-trade processes more broadly will change with them.
The question for fund managers and their service providers is how well their current operating models will stand up to that shift.
An increasingly misaligned model
One of the clearest consequences of T+1 is the growing divergence between the settlement of underlying securities and that of fund subscriptions and redemptions.
Portfolio trades will complete on a T+1 basis, while fund cashflows often continue to settle over longer timeframes. This creates a structural mismatch. In practice, it means that funds may need to pay for securities before subscription proceeds have been received, or manage the timing difference through cash reserves or credit facilities.
This dynamic is already familiar to firms with exposure to US markets following the transition there in 2024. In many cases, it has introduced additional complexity into liquidity management and increased the cost of bridging short-term funding gaps.
Industry bodies in the UK have already begun to address this gap. The Investment Association, alongside PIMFA and AIMA, has recommended that funds move to a T+2 settlement cycle by October 2027, in part to reduce the funding mismatch while retaining some flexibility in cash management. This reflects a broader direction of travel as the industry adapts to shorter settlement cycles.
Operational pressure points
The move to a shorter settlement cycle also brings into sharper focus a number of longstanding operational challenges within fund settlements.
Despite significant progress in automating trade execution, the processes that follow often remain manual. Reconciliations, payment calculations and the exchange of settlement instructions are still frequently handled through spreadsheets and offline workflows.
Alongside this, the timing of cash movements continues to present difficulties. It is common for firms to delay outgoing payments until incoming funds have been received, resulting in a concentration of activity later in the day and limited visibility over final settlement positions.
These practices have persisted in part because longer settlement cycles have allowed time to resolve issues as they arise. Under T+1 or even T+2, that flexibility is significantly reduced. Post-trade activities that previously took place over several days must now be completed within a much narrower window, increasing the importance of accuracy and timeliness at every stage.
The role of automation
In this context, the case for greater automation becomes more pressing.
Regulators and industry bodies have emphasised the need for earlier trade matching, improved data quality and more integrated communication across the trade lifecycle. Firms that have already invested in straight-through processing are better positioned to meet these requirements, while those that continue to rely on manual intervention are likely to face higher operational strain.
Experience from the US transition supports this view. Firms that entered T+1 with less automated processes encountered increased volumes of exceptions and higher operating costs as a result.
For the funds industry, the implication is that automation is no longer simply a means of improving efficiency. It is becoming a prerequisite for operating effectively within a faster settlement environment.
A more fundamental challenge
Alongside these operational considerations, there is a more ingrained issue that the industry will need to address.
Many of today’s settlement practices persist because they are familiar rather than because they are efficient. Processes that rely on manual intervention, late-day payments or fragmented ownership have been tolerated because, in a longer settlement cycle, they have been workable.
There remains a tendency across parts of the industry to view these processes as sufficient. If they function, they are left unchanged.
A shorter settlement cycle changes that dynamic. With less time available to resolve discrepancies or manage cashflows, these approaches become harder to sustain. What previously worked under longer cycles will not translate easily into a T+1 environment.
Addressing this will require more than system upgrades. It will require firms to re-examine established practices, take greater ownership of end-to-end processes and place more emphasis on upfront accuracy and coordination. Without that shift, the benefits of automation and new infrastructure will be harder to realise.
Rethinking settlement structures
The transition also provides an opportunity to reflect on how settlements are structured more broadly.
Many firms continue to operate with inefficient settlement models. Some process payments on a trade-by-trade basis, generating a high volume of individual transactions, while others group trades together on a gross basis but still experience unnecessary payment volumes and associated liquidity exposure. Alternative approaches, such as net settlement, allow inbound and outbound payments to be offset against one another, reducing both the number of transactions and the overall cash requirement.
While moving to such models can require changes in infrastructure and coordination, the benefits become more apparent in an environment where timing is more constrained and liquidity management is under greater scrutiny.
Looking ahead
With the 2027 deadline approaching, the focus is increasingly shifting from awareness to implementation. Industry timelines indicate that firms should already be assessing the impact of T+1 and preparing for the changes required ahead of testing phases in 2027.
For fund managers and their service providers, this is not simply a question of regulatory compliance. The move to T+1 is part of a broader evolution in market infrastructure, one that places greater emphasis on speed, transparency and operational resilience.
At Calastone, we are seeing a growing number of firms take steps to modernise their settlement processes in response to these developments. Our settlement solution enables the automation of the trade-to-payment lifecycle, supporting different settlement models and providing the visibility required to manage cashflows more effectively in a shorter cycle environment.
The shift to T+1 will not directly redefine how funds settle, but it will reshape the conditions in which they operate. Firms that address the implications early are likely to be better positioned to manage both the operational demands and the opportunities that follow.
(First published Funds Europe April 2026)
