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In forceInsurers: national Solvency II extensions (national)Last checked 11 November 2026

Standard formula figures for insurers using an internal model (SII_AES_ART112, SII_ARG_ART112)

A regulatory return listed by the National Bank of Belgium (NBB), Belgium.

Insurers and groups that use a full or partial internal model approved by the NBB must also report each year their Solvency Capital Requirement calculated with the standard formula (Article 167 §7 of the insurance supervision act). The reports are named separately in OneGate with 'Article 112' set to 'Yes'. Source

Official title: Annual insurance reporting for individual undertakings (groups) using a full or partial internal model (with ECB add-on) - standard formula information

The facts

Who files
Undertakings and groups using an approved full or partial internal model (not Article 275, 276 or 294 undertakings). Source
How often
Annual. Source
Deadline
8 April 2026 (solo) and 20 May 2026 (group) for the reference date 31/12/2025 (Annex 3 to NBB_2026_01). Source
Format
XBRL-XML. XBRL in OneGate domain INS using EIOPA's Article 112 entry points (SII_AES_ART112, SII_ARG_ART112). Source
How it is filed
Filing routes recorded for the NBB: OneGate; NBB Supervision. See how firms file with the NBB.
Status
In force
Legal basis
Group
Insurers: national Solvency II extensions (national)

Templates (8)

The tables and forms inside the return. Plain name first, the NBB's code in brackets.

  • Solvency Capital Requirement (S.25.01)
  • Solvency Capital Requirement - Market risk (S.26.01)
  • Solvency Capital Requirement - Counterparty default risk (S.26.02)
  • Solvency Capital Requirement - Life underwriting risk (S.26.03)
  • Solvency Capital Requirement - Health underwriting risk (S.26.04)
  • Solvency Capital Requirement - Non-life underwriting risk (S.26.05)
  • Solvency Capital Requirement - Operational risk (S.26.06)
  • Solvency Capital Requirement - Non-life and Health NSLT catastrophe risk (S.27.01)

EIOPA templates listed in Circular NBB_2016_02, calculated with the standard formula; NBB_2016_02 said the reporting applied at least until 31 December 2017, and Annex 3 to NBB_2026_01 still lists it. Source

Validation rules

The NBB publishes the checks it runs on this return. They could not be counted from the published material. Software can run them exactly as published. Source

How they are written: EIOPA validation rules in the EIOPA reporting framework (see the EIOPA entry); OneGate taxonomy checks.

The rules are EIOPA's. From reference period 30/09/2025 every file is forwarded to EIOPA in real time and a report can be closed in OneGate only when both the OneGate and the EIOPA validation reports show no errors. The NBB asks firms to avoid unnecessary zeros: more than 10% zeros gives a warning (05/02/2020 news). The CPA page publishes validation tests between the Solvency II reporting and the annual accounts (validatietests.pdf).

How they were counted

Not counted here: the EIOPA's validation rules apply (see eiopa/ars).

Counts are in the NBB's own unit, so they are not comparable with other regulators' counts.

Public data

No published data from this return was found. No data from this return published by the NBB was found on the pages checked. Source

Official documents (5)

The NBB's own files, with the size and SHA-256 fingerprint of each as downloaded on 11 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's text and records here are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The regulators' documents, forms, taxonomies, rules and data belong to them: see NBB's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text.

Source: National Bank of Belgium (https://www.nbb.be). Documents copied here are unchanged and are available free of charge on the NBB's website. The plain-English summaries are Line4's own; the NBB does not endorse this library.

Last checked 11 November 2026.