FCA Cuts Transaction Reporting Costs by £108m a Year

The Financial Conduct Authority has finalised rules that will cut the annual cost of MiFID transaction reporting for UK firms by an estimated £108m, taking the industry's yearly bill from £493m down to roughly £385m. The changes, confirmed on 3 August 2026 in policy statement PS26/15, reduce the number of mandatory reporting fields, remove several instrument classes from scope entirely, and shorten the window for correcting historical errors. They take effect on 3 April 2028.

For the compliance, operations and technology teams that carry the cost of transaction reporting, this is the most material reduction in the reporting burden since the UK onshored the MiFID regime after Brexit. It is also the first concrete deliverable from a wider programme aimed at simplifying how trades are reported across three separate UK regimes.

What is actually changing?

Four changes drive the savings. The count of transaction reporting fields falls from 65 to 52. Foreign exchange derivatives are removed from reporting requirements altogether, which the FCA says cuts costs for more than 400 firms. Around 7 million financial instruments, including equities, bonds and certain derivatives traded only on EU venues, are taken out of scope, a change the regulator estimates is worth about £32m a year on its own. And the period for correcting historical reporting errors is cut from five years to three, reducing the volume of reports firms have to resubmit by roughly a third.

To put the scale in context, the FCA receives more than 7 billion MiFID transaction reports a year. Those reports underpin its ability to detect market abuse, monitor how markets are functioning and supervise firms. The regulator has been explicit that the reforms are about removing duplicative or low-value data rather than reducing oversight: the stated aim is to keep receiving accurate, high-quality data while stripping out reporting that adds cost without adding insight.

Why does the 2028 start date matter?

The rules commence on 3 April 2028, giving firms close to two years to rebuild and test the systems that feed their reports. That runway is deliberate. Transaction reporting is not a single database field: it touches trading infrastructure, data pipelines and compliance workflows that often span multiple internal teams and third-party vendors, so reconfiguration is a change-management exercise rather than a quick switch.

The FCA has said it will take a flexible supervisory approach for firms that are ready to adopt certain changes earlier, meaning those that move quickly should not be penalised for running ahead of the deadline. Firms will still need to weigh the cost of an early migration against the operational risk of changing live reporting systems before they are fully tested.

How does the FIRDS "golden source" change affect firms?

One of the more consequential technical shifts sits alongside the headline field reductions. The FCA is moving to treat its own Financial Instruments Reference Data System, FCA FIRDS, as the definitive source for determining whether an instrument is reportable, with regulatory protection for firms that reasonably rely on it.

This addresses a long-standing industry frustration. Practitioners have historically warned that FIRDS reference data is imperfect and cautioned against treating it as a single authoritative source, which left firms carrying the compliance risk of eligibility calls that were difficult to make with certainty. Building in protection for reasonable reliance shifts some of that risk and should simplify the instrument-eligibility processes that generate a meaningful share of reporting effort and rejections.

What comes next on reporting reform?

PS26/15 is the near-term deliverable within a longer strategic programme. The FCA and the Bank of England have established a cross-industry Transaction and Post-trade Reporting Harmonisation Taskforce, which held its inaugural meeting in July 2026, to align reporting requirements across UK MiFIR, UK EMIR and UK SFTR. HM Treasury is also involved in the wider effort to remove duplication across the three regimes.

The taskforce is not a single body. It is split into three working groups covering policy, strategy and architecture, and its membership runs to more than 30 named participants drawn from firms including Barclays, Citigroup, Goldman Sachs, BlackRock, Deutsche Bank, UBS and the London Stock Exchange Group, alongside the industry associations AFME and AIMA. The policy group is co-chaired by senior figures from the FCA and the Bank. The presence of that roster signals that further, potentially larger, changes to UK reporting are being worked on, though the FCA has not yet published timelines for what follows.

What does the industry make of it?

Maria Fritzsche, senior policy adviser at the trade body PIMFA, gave the package a broadly positive assessment. She said PIMFA welcomed the FCA's move to simplify the UK regime and cut unnecessary complexity for firms, and picked out three changes as the most consequential: the expansion of the corporate actions exemption, the decision to make FCA FIRDS the reference point for determining what is reportable, and the reduction in back-reporting requirements. Together, she argued, those measures should deliver meaningful operational benefits for wealth managers and financial advisers, representing a more proportionate and practical approach to reporting while still supporting effective market oversight.

That endorsement from the wealth and advice sector matters because much of the reporting burden falls on smaller firms without the compliance resources of a global bank, and it is those firms for whom the FIRDS golden-source protection and the shorter back-reporting window are most likely to move the cost needle.

Why this matters to FinanceX readers

A £108m annual reduction in reporting costs is real money returned to the operating budgets of banks, brokers and asset managers, but the more durable signal is directional. The UK is using its post-Brexit control of the MiFID rulebook to compete on regulatory efficiency, trimming duplicative reporting while holding the line on the surveillance data that keeps markets clean.

For firms, the immediate task is planning: the savings are only realised by those that reconfigure reporting systems ahead of the April 2028 deadline, and the FIRDS golden-source change means eligibility logic and reference-data workflows need review now, not in 2028. For investors and market participants, the harmonisation taskforce is the one to watch, because it points to structural change across UK MiFIR, EMIR and SFTR that will outlast this single policy statement.