What is ESMA’s “report once” ambition?

ESMA’s “report once” ambition refers to a more harmonised reporting model where firms avoid duplicating similar reporting processes across regimes such as MiFIR, EMIR and SFTR.

Why does “report once” matter for transaction reporting?

It matters because many firms currently maintain fragmented reporting platforms, duplicated controls and separate reconciliation processes for regulations that often rely on similar underlying data.

What problem is ESMA trying to solve?

ESMA is addressing the complexity created by multiple overlapping reporting regimes, inconsistent data interpretation and duplicated operating models across transaction reporting frameworks.

How could firms benefit from a more harmonised reporting model?

Firms could reduce operational complexity, improve data consistency, simplify governance and respond more efficiently to future regulatory change.

What should firms do now?

Firms should start simplifying their reporting infrastructure and treat transaction reporting as an enterprise-wide data capability, rather than managing each regime in isolation.

Insights

ESMA's Interim Report (Part 1): Why 'Report Once' Matters More Than Ever

Published: 2nd July 2026

ESMA's Interim Report signals a clear shift towards more harmonised, consistent and interoperable transaction reporting across regulatory regimes.
Fragmented reporting environments create duplicated processes, higher costs and increasingly complex governance for financial firms.
The "report once" ambition is designed to improve data quality and supervisory effectiveness, not simply reduce duplicate reporting.
Firms that simplify their reporting operating models today will be better prepared for future regulatory change and harmonisation.

The publication of the European Securities and Markets Authority (ESMA)'s Interim Report is more than another regulatory consultation. It is one of the clearest acknowledgements yet that the way firms meet transaction reporting obligations has become unnecessarily complex.

For more than a decade, financial institutions have responded to successive regulations such as MiFIR, EMIR, SFTR and equivalent regimes across North America and Asia-Pacific by implementing new reporting solutions as each requirement emerged. While this approach achieved compliance, it also created fragmented reporting environments, duplicated controls and inconsistent operating models.

Today, many global firms maintain separate reporting platforms, governance structures and reconciliation processes for regulations that rely on much of the same underlying data. Similar data elements are interpreted differently across regimes, validation rules vary, and lifecycle events often require multiple representations of the same transaction. The result is an operating model that is expensive to maintain, difficult to scale and increasingly challenging to govern.

This is why ESMA's 'report once' ambition is so significant. Although the concept is simple, its importance extends well beyond reducing duplicate submissions. It reflects a broader regulatory objective: improving the quality, consistency and usability of supervisory data through greater harmonisation.

That ambition should resonate with firms. The greatest cost of transaction reporting today is often not complying with individual regulations, but maintaining the fragmented infrastructure built to support them. Every regulatory change requires multiple system updates, parallel testing and duplicated governance. As reporting obligations continue to evolve, those inefficiencies become harder to justify.

Whether a true 'report once' model is ultimately achieved remains uncertain. However, the direction of travel is becoming increasingly clear. Regulators are placing greater emphasis on interoperability, common data standards and consistent reporting outcomes.

The firms that will benefit most are unlikely to be those with the largest reporting estates. They will be those already simplifying their operating models and treating reporting as an enterprise-wide data capability rather than a collection of individual regulatory obligations.

In the next article, we explore what ESMA's proposals, together with the FCA's latest consultation, mean for firms operating across global reporting regimes.

Qomply’s Regulatory Reporting Hub combines regulatory expertise with AI, automation and data analytics to deliver scalable, audit-ready reporting intelligence that reduces errors, lowers remediation costs, and minimises operational and regulatory risk.

Covering regimes including MiFIR, EMIR Refit, SFTR, CFTC, CSA, MAS, ASIC and HKMA, Qomply also offers a fully managed service and operates globally from London.

Request a tailored demo

Asia-PacificEuropean UnionNorth AmericaUnited KingdomASICCFTCEMIR RefitHKMAMASMiFIR/MiFID IISFTR

Ask us anything

Frequently asked questions

ESMA’s “report once” ambition refers to a more harmonised reporting model where firms avoid duplicating similar reporting processes across regimes such as MiFIR, EMIR and SFTR.
It matters because many firms currently maintain fragmented reporting platforms, duplicated controls and separate reconciliation processes for regulations that often rely on similar underlying data.
ESMA is addressing the complexity created by multiple overlapping reporting regimes, inconsistent data interpretation and duplicated operating models across transaction reporting frameworks.
Firms could reduce operational complexity, improve data consistency, simplify governance and respond more efficiently to future regulatory change.
Firms should start simplifying their reporting infrastructure and treat transaction reporting as an enterprise-wide data capability, rather than managing each regime in isolation.