News | SteelEye

MiFIR 3 - Timeline of Upcoming Transaction Reporting Changes

Written by Matt Storey | May 8, 2025 12:36:34 PM

As highlighted in a recent SteelEye blog, MiFIR transaction reporting is undergoing significant changes in both the EU and UK. In that blog, we looked at the official documents - including EU legislation, ESMA papers, and UK FCA publications - needed to help you understand the evolving landscape.

Below, we've expanded on the topic and built out a timeline of the recent and upcoming changes associated with MiFIR transaction reporting. We also examine ESMA's past implementations performance, which will help provide context to understand what delays, if any, might be expected in this next rollout.

This is the second installment of a three-part blog series exploring the upcoming changes to MiFIR transaction reporting in the EU and UK. Stay tuned for the last blog in this series, where we'll cover the scope of the proposed changes, as well as how firms should respond.

Prefer to listen? Take this blog on the go with our AI-generated podcast by listening here.

Topics covered:

Chronology of Changes

To help track the rollout of these changes, below is a timeline of key milestones in the EU and UK relating to MiFIR transaction reporting reforms in 2024–2025. The timeline highlights regulatory events, consultation periods, and expected implementation dates.

The timeline below focuses on 2024–2025 milestones. Beyond 2025, EU firms should anticipate compliance with the new RTS 22 requirements (likely in 2026 after a technical implementation period), while UK firms should be prepared for new FCA rules coming into effect once the UK’s consultation and rulemaking process is complete (potentially in 2026). Firms operating in both jurisdictions will need to track both schedules.

Date

EU - MiFIR Transaction Reporting Developments

UK – MiFIR Transaction Reporting Developments

Mar-21

  • ESMA publishes a comprehensive report on the functioning of MiFIR Article 26 reporting, identifying issues and recommending improvements.

  • This report lays groundwork for legislative changes.

  • HM Treasury launches the Wholesale Markets Review (WMR) to evaluate post-Brexit reforms to the UK’s MiFID II/MiFIR framework.

28 Mar 24

  • MiFIR Review enters into force, amending Article 26 (transaction reporting).

  • Changes will require new RTS before taking effect.

 

3 Oct 24

  • ESMA publishes Consultation Paper on revised RTS 22 (transaction data reporting), proposing new fields (effective date, entity ID, chain ID, etc.) and other changes.

  • Consultation runs until January 2025.

 

7 Nov 24

 
  • FCA issues Market Watch 81 newsletter highlighting ongoing problems with incomplete or inaccurate transaction reports and the need to improve data quality.

  • This reinforces UK’s focus on better reporting.

14 Nov 24

 
  • HM Treasury policy statement announces intent to revoke retained MiFIR transaction reporting provisions and delegate design of a new UK regime to the FCA.

  • This paves the way for UK-specific rules, diverging from EU.

15 Nov 24

 
  • FCA Discussion Paper DP24/2 published, launching a review of the UK transaction reporting regime. It seeks feedback on potential field changes, scope, and simplification.

  • Open for comments until Feb 2025.

17 Jan 25

  • ESMA consultation on RTS 22 closes (deadline for industry feedback).

  • ESMA begins drafting final RTS amendments based on input.

 

14 Feb 25

 
  • FCA’s DP24/2 comment period closes.

  • FCA to consider feedback on improving data fields, reducing burdens, etc.

Q1-25

  • ESMA to publish a Final Report and submit the revised draft RTS 22 to the European Commission for endorsement.

  • ESMA indicated this is expected by end of Q1 2025.

  • 2025 (Expected): FCA to publish a Consultation Paper with specific proposals for new UK transaction reporting rules.

  • This would outline actual field changes or policy decisions, based on DP24/2 feedback.

H2-25

  • European Commission and co-legislators likely approve the new RTS 22 by late 2025 (typical ~6–9 month process after Q1 submission).

  • Go-Live: ESMA has suggested a 12-month implementation period for firms after final technical standards are published, pointing to a possible late 2025 or early 2026 application of the new reporting requirements.

  • TBD 2025–2026: FCA and HMT to finalize UK MiFIR reforms. Depending on consultation outcomes, the UK could enact new transaction reporting rules by 2026.

  • UK firms would then transition to the revised regime (with potential divergence in reportable fields and scope from the EU). 

Will the timeline be adhered to?

Although past performance is no guarantee of future results, it provides helpful context to understand ESMA’s delays in implementing such regimes historically. This breakdown may provide a degree of comfort to the affected teams that will be tasked with supporting these new requirements.

Regulatory Output (Framework)

Expected Timeline

Actual Publication/Delivery

Delay

MiFIR RTS 22 – Transaction Reporting (MiFID II/MiFIR)

Expected to apply from 3 Jan 2017 (MiFID II original go-live)​

In force on 3 Jan 2018 (final RTS in Commission Delegated Reg. 2017/590)​

12-month delay

MiFIR RTS 23 – Reference Data (MiFID II/MiFIR)

Expected to apply from 3 Jan 2017 (MiFID II original go-live)​

In force on 3 Jan 2018 (final RTS in Commission Delegated Reg. 2017/585)​

12-month delay

EMIR Margin RTS – Final phase of Initial Margin for non-cleared derivatives (EMIR)

All covered counterparties initially to exchange margin by 1 Sep 2020 (original final phase-in deadline)

Final phase took effect 1 Sep 2022 after two one-year extensions (smallest counterparties delayed)​

24-month delay

EMIR Refit Reporting Standards – Revised RTS/ITS for trade reporting (EMIR)

ESMA mandated to deliver draft standards by 18 Jun 2020 (per EMIR Refit Regulation)​

ESMA’s final report submitted late 2020; EU adopted final rules in 2022 (reporting start April 2024) – effectively ~6 months behind initial schedule

~6-month delay

SFTR Reporting Go-Live (Phase 1) – Trade reporting for banks (SFTR)

Initially scheduled for 13 Apr 2020 (first wave of SFTR reporting go-live)

Actually went live on 13 Jul 2020 after ESMA’s COVID-19 deferral (NCAs applied 3-month forbearance on enforcement)

3-month delay

MAR Review Report – ESMA’s technical advice on Market Abuse Regulation

EU Commission’s review report was due by 3 Jul 2019 (MAR Article 38 mandate)​ – implying ESMA’s input expected by mid-2019

ESMA delivered its MAR review report on 24 Sep 2020, with proposals to amend MAR (Commission report published subsequently)

~14-month delay

HAVE A CONVERSATION

If you’re interested in streamlined compliance and future-proof transaction reporting solutions, we invite you to:

  • Book a Demo and see our platform, where we’ll walk you through how our end-to-end MiFIR reporting solution helps automate data capture, validate field requirements, and monitor compliance under both EU and UK regimes.

  • Sign Up for Our Newsletter to stay on top of the latest MiFIR regulatory updates, upcoming consultation papers, and practical guidance on implementing new reporting fields.

We look forward to supporting you through these changes!