FCA Transaction Reporting Reform To Cut Industry Costs By £108m

The Financial Conduct Authority (FCA) has published its final rules on the UK transaction reporting regime, confirming a package of changes it estimates will reduce the annual cost to industry from approximately £493m to £385m — a net saving of £108m. The rules take effect on 3 April 2028, with a flexible supervisory approach permitting firms that are ready to implement certain elements ahead of that date.

The reforms narrow the reportable perimeter in four material respects. The number of reportable fields falls from 65 to 52. Foreign exchange derivatives are removed from scope altogether, affecting more than 400 firms. Some seven million financial instruments — including equities, bonds and certain derivatives traded only on European Union (EU) trading venues — cease to be reportable, accounting for roughly £32m of the projected saving. The window for correcting historical reporting errors contracts from five years to three, which the FCA expects will cut resubmission volumes by around a third.

For firms operating under the onshored Markets in Financial Instruments Regulation (MiFIR) reporting obligation and the Handbook provisions at SUP 17A, the practical work is not a decommissioning exercise. Removing instruments and fields from a reporting engine requires the same rigour as adding them: eligibility logic, reference data feeds, static data mappings and reconciliation controls all need to be rebuilt, retested and re-evidenced. Firms that treat the April 2028 date as generous should note that the FCA's data quality expectations are unchanged, and that under-reporting arising from a mis-scoped eligibility rule remains a breach regardless of whether the underlying instrument was in or out of scope before the change.

The reduction in the back-reporting window carries a subtler implication. A three-year correction period lowers remediation cost, but it also shortens the period in which a firm can retrospectively evidence that it identified and fixed its own errors. Firms with weak reconciliation between front-office booking systems and submitted reports have historically relied on extended lookbacks to demonstrate good faith when errors surface late. That cushion is thinner. The compensating control is more frequent and more granular self-reconciliation — comparing submitted reports against trade capture data as a routine cycle rather than an episodic exercise.

Financial crime and market conduct teams should also consider the internal consequences of a smaller reportable universe. Transaction reports underpin the FCA's market abuse detection and supervisory work, but many firms have quietly used the same extraction logic to feed their own surveillance systems. Where foreign exchange derivatives or EU-venue-only instruments drop out of the regulatory report, they do not drop out of a firm's obligations under the UK Market Abuse Regulation (UK MAR) or its wider systems and controls duties. Surveillance coverage should be assessed independently of reporting scope, and any dependency between the two should be documented and, where necessary, severed.

The FCA has confirmed it will continue to work with the Bank of England and HM Treasury on harmonising transaction and post-trade reporting, through a cross-industry taskforce that held its first meeting in July 2026. Firms with material post-trade transparency obligations should expect further consultation rather than treating the current package as settled.

Read the press release here.