FCA changes to the UK transaction reporting regime

The Financial Conduct Authority has finalised significant changes to the UK transaction reporting regime, introducing a more streamlined framework for firms reporting under UK MiFIR.

Announced on 3 August 2026, the FCA’s final rules reduce the number of reporting fields, remove certain financial instruments from scope and shorten the period for correcting historical reporting errors. The new requirements will take effect on 3 April 2028, giving affected firms time to review their reporting logic, data requirements and systems.

What is changing under the UK transaction reporting regime?

Transaction reports provide the FCA with information about financial market activity, including the instruments traded, transaction prices and parties involved. This data plays an important role in the FCA’s ability to monitor markets, supervise firms and detect and investigate potential market abuse.

Under the final rules, the FCA will:

• Reduce the number of transaction reporting fields from 65 to 52
• Remove foreign exchange derivatives from reporting requirements, reducing costs for more than 400 UK firms
• Remove reporting requirements for around seven million financial instruments, including equities, bonds and certain derivatives that are only traded on EU trading venues
• Reduce the period for correcting historical reporting errors from five years to three years, lowering the number of transaction reports that need to be resubmitted by a third

The FCA estimates that these measures will reduce the annual cost of MiFID transaction reporting to the industry from approximately £493 million to £385 million, representing a net annual saving of £108 million.

What do the FCA transaction reporting changes mean for firms?

While the reforms are intended to reduce the overall reporting burden, firms will still need to understand how the revised requirements affect their data, systems and operational processes.

This will be particularly important for organisations operating across both the UK and the EU. As the UK develops its own transaction reporting framework, firms may need to distinguish more clearly between UK and EU activity and manage the requirements of two increasingly distinct regimes.

Affected firms should consider:

• Reviewing their current transaction reporting logic
• Assessing changes to the scope of reportable instruments and data fields
• Identifying where reporting systems and data processes will need to be updated
• Determining how UK activity will be identified and managed within existing infrastructure
• Planning sufficient time to implement and test any required changes

The simpler scope of the new regime should reduce ongoing reporting requirements. However, firms will still need to complete the initial work required to interpret the rules, adapt their systems and ensure that their reporting remains accurate.

When will the new UK transaction reporting rules take effect?

The revised UK transaction reporting regime will take effect on 3 April 2028.

Before then, the FCA plans to publish a draft reporting schema, validation rules and new guidance for consultation in October 2026. This consultation will also cover transitional provisions and related amendments to the FCA Handbook.

The FCA has also said it will take a flexible supervisory approach to some areas from 3 August 2026 until the new regime formally comes into force. This may allow firms that are ready to adopt certain changes earlier to benefit from some of the reduced reporting requirements before April 2028.

Although the implementation date may appear some distance away, adapting transaction reporting infrastructure can be complex. Firms will need time to interpret the technical requirements, update their processes and complete sufficient testing before the new regime takes effect.

How Parameta Solutions is preparing for the transition

Parameta Solutions will be reviewing the final rules and assessing the changes required to align its MIFID Trade & Order Data service with the revised UK transaction reporting regime.

The service provides broker-sourced trade and order data that can support regulatory reporting, surveillance and internal oversight workflows. It will be updated to reflect the scope and data requirements of the new UK regime, helping clients prepare for the transition while continuing to meet their existing reporting obligations.

“The FCA’s final rules provide firms with greater certainty about the future of UK transaction reporting. Although the revised regime is designed to reduce the overall reporting burden, firms will still need to understand the changes, review their existing processes and prepare their systems well ahead of implementation.

“We are assessing the final requirements and will adapt our MIFID Trade & Order Data service to align with the new regime. Our focus is on helping clients understand what the changes mean for their data and supporting them as they prepare for April 2028.”

Steven Holland, Head of Regulatory Products at Parameta Solutions

To learn more about how Parameta Solutions is preparing for the new UK transaction reporting regime, contact us to speak to a member of our team.