Each year, financial institutions are required to report to De Nederlandsche Bank (DNB) under the Investor Compensation Scheme (ICS) on the investment value of their non-professional clients. With the next reporting cycle approaching, DNB has announced several important changes that will take effect for the data request covering the 2025 reporting year, to be submitted in the first quarter of 2026. In addition, DNB has published the results of the 2024 data request and issued an update on the transition to xBRL-CSV reporting.
Introduction of a New XBRL Taxonomy
For the upcoming reporting cycle, DNB has developed a new XBRL taxonomy to facilitate more structured, transparent, and automated data exchange. XBRL (eXtensible Business Reporting Language) is an international standard for the transfer of financial and business information, and the updated taxonomy is expected to enhance data quality while making data processing faster and more efficient.
To reduce the reporting burden on institutions, DNB will continue to allow submissions via an Excel template. In these cases, DNB will convert the data to XBRL internally. Institutions that prefer to submit directly in XBRL may still do so. All ICS reports must now be submitted through Mijn DNB – Service Reports.
Expansion of Data Points to All Four Quarters
A major change in the 2025 reporting cycle is the expansion of the data request to include all four quarters of the calendar year. Previously, institutions only reported figures as of the fourth quarter. Collecting quarterly data will give DNB better insight into intra-year fluctuations and allow for calculation of annual averages.
The 2026 submission covering reporting year 2025 will include data for the following reference dates:
- 31 March 2025
- 30 June 2025
- 30 September 2025
- 31 December 2025
Results of the 2024 ICS Report
The latest ICS report, based on the reference date of 31 December 2024, shows a decrease in covered investment values. Key findings include:
- The total value of investments covered by the ICS fell by 6% compared to the previous year.
- Covered assets amounted to EUR 23.122 million.
- Non-bank financial institutions accounted for EUR 3.486 million of the total.
To support potential compensation needs in the event of institutional failure, the ICS includes a dedicated fund managed by the Stichting Beleggers Compensatiefonds with operational support from DNB. While the fund was initially financed through sector contributions, it now receives income primarily from entry fees paid by new participants. As of the latest reporting cycle, the fund totals EUR 12.8 million.
Revised Timeline for Transition to xBRL-CSV
In a previous update on the implementation of the new Data Point Model (DPM 2.0), DNB communicated that reporting entities would be required to adopt xBRL-CSV for reports with a December 2025 reference date, with xBRL-XML being phased out.
However, following a postponement by the European Banking Authority (EBA), the mandatory transition to xBRL-CSV has now been moved to the March 2026 reference date. This extension provides institutions—particularly banks—additional time to adapt their systems for accurate reporting under the new standard.
DNB has clarified the following:
- For reference periods before March 2026, xBRL-CSV submissions will not be accepted, except for new EBA-mandated reports such as those introduced under DORA.
- DNB also intends to adopt xBRL-CSV for its own taxonomy-based reports in the future. Further planning details will be communicated once available. For now, existing submission processes remain unchanged.
Conclusion
The upcoming changes to the ICS data request reflect DNB’s broader efforts to modernize supervisory reporting, enhance data quality, and reduce administrative burdens. With quarterly reporting, a new XBRL taxonomy, and a revised timeline for the adoption of xBRL-CSV, institutions should prepare for a more detailed and structured reporting process beginning in 2026. Keeping ahead of these developments will be essential for ensuring compliance and maintaining accurate, timely data submissions.
References
De Nederlandsche Bank . (2025, July 21). Changes to data request for the Dutch Investor Compensation Scheme as of 2026. Retrieved from De Nederlandsche Bank: https://www.dnb.nl/en/sector-news/supervision-2025/q3/changes-to-data-request-for-the-dutch-investor-compensation-scheme-as-of-2026/
De Nederlandsche Bank . (2025, June 27). Revised start date for transition to xBRL-CSV. Retrieved from De Nederlandsche Bank: https://www.dnb.nl/en/login/dlr/supervisory-reports/banks/news-and-messages/news/2025/2025-06-27-revised-date-for-transition-to-xbrl-csv/
Photo:
https://th.bing.com/th/id/OIP.KCJGgLINl5vHFN-m463qoQHaEK?o=7&cb=ucfimg2&rm=3&ucfimg=1&rs=1&pid=ImgDetMain&o=7&rm=3
