UK FCA Finalises Transaction Reporting Reform in PS26/15 Cutting Industry Costs by £100 Million While Keeping Cryptoasset Derivatives in Scope

On 3 August 2026, the UK Financial Conduct Authority published Policy Statement PS26/15.¹ The statement finalises rules improving the UK transaction reporting regime. The reforms will cut firms' reporting costs by more than £100 million a year. Transaction reporting fields will fall from 65 to 52. Foreign exchange derivatives will leave the scope of reporting requirements. Reporting will end for 7 million instruments traded only on EU venues. The default back reporting period for error correction falls from five years to three. The new regime comes into force on 3 April 2028. A flexible supervisory approach applies from 3 August 2026 for firms ready sooner. The rules replace assimilated EU law derived from UK MiFIR with a Handbook framework.² Cryptoasset derivatives remain within the reporting perimeter. The reform affects investment firms, trading venue operators and approved reporting mechanisms across UK markets.

The Markets in Financial Instruments Regulation transaction reporting rules were implemented in 2018.¹ HM Treasury has committed to repealing that legislation, enabling the FCA to deliver what the regulator describes as a more proportionate, streamlined and agile framework in its Handbook. PS26/15 sets out the final rules and feedback to the proposals consulted on in CP25/32, published in November 2025, following a discussion paper in November 2024.² The FCA states that the current annual cost of MiFID transaction reporting to industry is £493 million, and estimates the changes will reduce that cost to approximately £385 million, a net annual saving of £108 million.¹ The sequence showcases the post-Brexit regulatory model operating as designed: assimilated EU law repealed by the Treasury, rewritten by the FCA into Handbook rules, and recalibrated against a domestic cost benefit assessment.

The FCA's Statement

"Transaction reports are the backbone of our market oversight work – they help us catch financial crime, monitor market stability and supervise firms effectively. By taking a smarter, streamlined approach to reporting, we're giving firms meaningful cost relief while ensuring we continue to receive the accurate, high-quality data that keeps UK markets clean and competitive," said Ms Therese Chambers, joint executive director of enforcement and market oversight.¹

The FCA in the above frames the reform as burden reduction without surveillance loss. The framing matters: transaction reports feed the market abuse detection on which the FCA's enforcement docket depends, so the deleted fields and exclusions are those the regulator has judged to carry no surveillance value.

The Four Headline Changes

The number of transaction reporting fields falls from 65 to 52.¹ Reporting obligations end for approximately 7 million financial instruments, including equities, bonds and certain derivatives, that are tradeable only on EU trading venues, saving firms approximately £32 million annually.¹ The geographical scope of the regime narrows to instruments tradeable on UK trading venues.²

Foreign exchange derivatives, including currency options, futures, swaps and forwards, are removed from scope entirely, reducing costs for over 400 UK firms, with the FCA relying instead on data reported under UK EMIR.² The exclusion does not extend to cryptoasset derivatives, which remain reportable.² The default period for correcting historical reporting errors falls from five years to three, lowering resubmission volumes by roughly a third, although the FCA retains discretion to require up to five years of data in exceptional cases.²

The crypto carve out from the carve out in the above is the point for digital asset market participants. Where FX derivatives duplicate EMIR data, cryptoasset derivatives evidently do not in the FCA's assessment, and their transaction level visibility remains a supervisory priority. Firms trading crypto derivatives on UK venues should build the new 52 field schema into their reporting architecture on the same timeline as everyone else, with no scope relief.

Implementation Timeline and Early Adoption

The new regime comes into force on 3 April 2028, an implementation period respondents supported given the scale of system, process and governance changes required.² The FCA will take a flexible supervisory approach in some areas from 3 August 2026, allowing firms that are ready to make certain changes sooner.¹ A draft schema, validation rules and new guidelines, forming part of a new Transaction Reporting User Pack, will be consulted on in October 2026, alongside transitional provisions.²

One practical caution follows from the sequencing. Certain early adoptable changes depend on validation rules that will not be updated until after the October 2026 consultation, and firms moving before the validation layer catches up risk report rejections. Reporting teams should map which changes are genuinely available early and which must wait for the revised schema.

Harmonisation With The Bank Of England

The FCA will continue working with the Bank of England and the Treasury to harmonise transaction and post trade reporting regulations.¹ The cross industry Transaction and Post-trade Reporting Industry Harmonisation Taskforce, established with the Bank of England, held its inaugural meeting in July 2026 and will inform the long term design of the harmonised regimes through its policy, strategy and architecture working groups.²

The taskforce in the above signals that PS26/15 is a first instalment. Firms building reporting change programmes should design for further convergence between MiFIR style transaction reporting and EMIR style post trade reporting rather than treating the 2028 regime as an end state.

Conclusion

The reforms alter the scope and content of reporting obligations but leave the underlying market abuse and supervisory framework untouched. Reports remain the FCA's primary market abuse surveillance input, and reporting quality remains an enforcement exposure, as the FCA's disciplinary history on transaction reporting attests. Affected firms may consider reviewing reporting logic, field mappings and governance now.