ESMA’s integrated collection of funds’ data could become the most significant change to European regulatory reporting since AIFMD was introduced. While implementation remains several years away, the proposals signal a fundamental shift from managing individual regulatory returns to managing regulatory data itself.

It is an early signal of how European supervisory reporting is likely to evolve: fewer standalone templates, greater standardisation and increased data reuse. For fund managers, the question is not only what ESMA may require in a future template, but whether existing data, controls and operating models can support a more integrated regime.

ESMA’s Final Report sets out a clear objective: replace a fragmented landscape of overlapping supervisory, statistical and national returns with a system based on “report once, use many times”. For managers, however, simplification is likely to involve regulatory, data and operational change.

The report, produced under the revised AIFMD and UCITS frameworks, sets out ESMA’s preferred architecture for future funds reporting. At its centre is a single, dynamic and modular reporting template, supported by a common regulatory data dictionary and harmonised definitions. Data would still be collected by a designated authority at national level, but validation, storage, sharing and analytics would increasingly be organised through a central EU data hub.

A broader reporting perimeter

The first phase would consolidate reporting under AIFMD and UCITS. A second phase would seek to incorporate MMFR, statistical reporting and potentially other fund obligations.

A modular structure is intended to provide proportionality. Core information would apply across AIFs and UCITS, while additional modules could be activated according to fund type, strategy, leverage, liquidity profile or other risk characteristics. A leveraged hedge fund, an alternative credit fund, a liquid UCITS and a fund of funds should not complete an identical return.

The practical question will be whether activation criteria are clear and stable. A framework that frequently moves funds between modules or frequencies could replace today’s duplication with a new form of complexity.

The data challenge comes first

For reporting teams, the most consequential proposal may be the common data dictionary. Current difficulties often arise not because a data point is unavailable, but because similar concepts are defined differently across regimes. Assets under management, asset classifications, investor categories, maturity buckets and look-through requirements are familiar examples.

A common semantic layer could materially improve consistency. It may also expose weaknesses that have been hidden by today’s fragmented reporting regimes. Many firms currently produce accurate returns despite inconsistent internal definitions because each regime is prepared in isolation. Firms will need to know where each element originates, how it is calculated, who owns it and whether the same definition is applied across administrators, portfolio systems, risk platforms and internal records.

The framework also points towards more granular information. ESMA envisages portfolio holdings as a key module and recognises the potential reuse of security-by-security data already collected for statistical purposes. This should reduce duplication, but will increase the importance of instrument identifiers, counterparty data, reference data and reliable look-through processes. Private asset managers may face challenges where standard identifiers are unavailable, and exposures sit across less standardised systems.

From reporting to data management

A key implication of ESMA’s proposals is that regulatory reporting may become less of a periodic filing exercise and more of an ongoing data management discipline. Today, many obligations are still managed return by return, even where they rely on similar underlying information.

The integrated collection model challenges that approach. If data is to be reused across supervisory, statistical and financial stability purposes, managers will need greater confidence in data consistency, lineage and ownership.

This has clear operating model implications. Managers will continue to rely on administrators, vendors and reporting providers, but roles and responsibilities will need to be more clearly defined. For managers and their service providers, the challenge will move beyond generating files to maintaining a regulatory data model, interpreting definitions, identifying data gaps and evidencing controls.

Simplification may not mean less reporting

The report suggests a monthly base frequency for core AIFMD and UCITS information, with frequencies calibrated at module level. It also leaves open daily reporting for a limited number of time-sensitive fields and event-driven reporting for matters such as activation of liquidity management tools.

This illustrates the central trade-off. Integration may reduce the number of separate returns, but supervisors may receive more granular data, more frequently and with stronger validation. The burden should fall if authorities genuinely reuse information and remove overlapping national collections. Until then, firms should not equate a single framework with a smaller compliance obligation.

What should managers do now?

The earliest proposed go-live is the first half of 2029. That may appear distant, but ESMA plans a consultation later in 2026 and aims to provide the RTS and ITS by April 2027. The key design choices will emerge well before implementation.

Managers should begin with a reporting data inventory covering AIFMD, national UCITS returns, MMFR, central bank reporting and related transaction-reporting datasets. They should identify duplicated fields, conflicting definitions, manual adjustments, missing identifiers and areas where responsibility is split between the manager, administrator and other delegates.

Outsourcing will remain important, but it will not remove the need for governance. Managers will need clear ownership of interpretations, data quality, sign-off and regulatory engagement, supported by operating models that can adapt to modular requirements and evidence controls.

ESMA’s proposals offer a credible route to a more coherent system. Yet the benefits will not arise simply from replacing several forms with one template. They will depend on harmonised definitions, genuine data sharing and removal of duplicative national requirements. 

Conclusion 

For many firms, the greatest challenge will not be completing a new reporting template, it will be building the data architecture capable of supporting future frameworks. ESMA’s proposals therefore represent more than a reporting initiative they mark the gradual transition from regulatory reporting as a filing exercise to regulatory reporting as a data discipline. Firms that begin that transformation early are likely to be best positioned as the new framework takes shape. 
 

For managers and their service providers, the challenge will move beyond generating files to maintaining a regulatory data model, interpreting definitions, identifying data gaps and evidencing controls.