ECB Updates RIAD 2026: What Banks and Financial Institutions Must Do

Key data

Financial and credit institutions supervised in Spain must pay attention to the ECB Guideline/2026/15, published on 13 July 2026. This regulation modifies ECB Guideline/2018/16 and updates the requirements of the Register of Institutions and Affiliates Data (RIAD), the Eurosystem's centralized database that collects information about financial institutions and their group structures throughout the euro area.

Although the formal obligation falls on national central banks—in the Spanish case, the Bank of Spain—, the changes in the data attributes required in RIAD translate in practice into new or modified information demands that banks and supervised institutions must provide to their national central bank.

What does this regulation establish?

RIAD is the Eurosystem's centralized database that stores structured information about financial institutions and their group relationships. ECB Guideline/2018/16 established the original reporting framework; the new ECB Guideline/2026/15 updates it with the following key elements:

• Update of the data reporting requirements that national central banks transmit to the ECB about financial institutions.
• Modification of the data attributes required in the register, which may involve new fields, formats or submission frequencies.
• Update of information relating to the group structures of registered financial institutions.
• Mandatory compliance for all Eurosystem members, including the Bank of Spain.

Economic and operational impact

The direct impact of this regulation falls on national central banks, which must adapt their reporting systems to the ECB. However, the operational impact for private financial institutions is real and indirect:

• Review of internal data flows: If the Bank of Spain updates the attributes it requests from institutions to comply with RIAD, banks and credit institutions will need to adapt their information systems.
• Cost of technological adaptation: Changes in reporting fields or formats may require modifications to data management systems and regulatory reporting processes.
• Review of group structures: Institutions with complex group structures (subsidiaries, holdings, affiliated entities) must verify that the information transmitted to the Bank of Spain correctly reflects the new definition of required attributes.
• Risk of indirect non-compliance: Incomplete or outdated reporting to the national central bank may result in supervisory incidents, although the direct penalty falls on the central bank, not on the private institution.

Who does it affect?

• National central banks of the Eurosystem (direct obligated parties): must adapt their data transmission systems to the ECB in accordance with the new RIAD requirements.
• Bank of Spain: as a member of the Eurosystem, is directly obligated to comply.
• Spanish credit institutions (banks, savings banks, credit cooperatives): indirectly affected if the Bank of Spain updates the data it requests from them to comply with RIAD.
• Other supervised financial institutions in the EU registered in RIAD: any institution whose information appears in the register may be affected by changes in required attributes.
• Financial groups with presence in several Eurosystem countries: greater exposure if changes affect group structure information.

Practical example

A medium-sized Spanish bank with several subsidiaries in other euro area countries is registered in RIAD with information about its group structure. Until now, the Bank of Spain requested a specific set of data attributes (entity identifiers, shareholding relationships, activity data) to feed RIAD.

With the entry into force of ECB Guideline/2026/15, if the ECB requires new attributes about group structures—for example, more granular information about subsidiary entities or additional identification data—, the Bank of Spain will pass that demand to the bank. The bank's regulatory reporting department will need to:

1. Identify what new fields or attributes are required.
2. Verify if that information is already available in its internal systems.
3. Adapt the process of sending data to the Bank of Spain if formats or frequencies change.

The operational cost will depend on the actual scope of changes in attributes, which will be clarified when the Bank of Spain publishes its implementation instructions.

What should companies do now?

1. Identify if your institution is registered in RIAD: Check if your institution appears in the Eurosystem register, either as a principal entity or as part of a financial group.
2. Contact the Bank of Spain: Request information on how ECB Guideline/2026/15 affects the data your institution must report. The Bank of Spain will publish implementation instructions for Spanish institutions.
3. Review current data attributes: Audit what information is currently being transmitted to the Bank of Spain under RIAD and compare it with the new requirements when available.
4. Evaluate the impact on reporting systems: Involve technology and data teams to assess whether new attributes require changes to regulatory information management systems.
5. Update group structure information: If your institution is part of a financial group, verify that information about holdings and affiliated entities is up to date and consistent with the new requirements.
6. Monitor the entry into force date: The regulation does not specify an entry into force date. Keep track of Bank of Spain communications to avoid delays.

Official source

Consult complete regulation in official source — EUR-Lex, EU Official Journal

Disclaimer: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://eur-lex.europa.eu/./legal-content/AUTO/?uri=OJ:L_202601694