Line4

In forceInsurers: internal models (national)Last checked 11 November 2026

Internal model and undertaking-specific parameter reports (D.1, D.2, D.3)

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

Reports for insurers using an internal model or undertaking-specific parameters: quarterly minor model change reporting (D.1), a standardised schedule on the SCR calculation and the information shared in the college (D.2, following the minimum requirements for internal model reporting) and the USP report (D.3, annexes of Circular NBB_2020_040). Source

Official title: Rapports en matière de modèle interne et de paramètres propres à l'entreprise (USP)

The facts

Who files
Insurers and groups that use an internal model (D.1, D.2) or undertaking-specific parameters (D.3). Source
How often
D.1 quarterly; D.2 and D.3 annual. Source
Deadline
D.1: same date as the quarterly OneGate reporting. D.2 and D.3: 8 April 2026 (solo), 19 May 2026 (group). Source
Format
Other. Uploaded as a document to the NBB Supervision portal, which gives each undertaking a list of the reports expected and gives direct access to OneGate (NBB_2026_01). 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: internal models (national)

Templates (3)

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

  • Minor model change reporting (D.1)
  • Standardised schedule on the SCR calculation and information shared in the college (D.2)
  • Undertaking-specific parameters (USP) (D.3)

Where the list was read: Source

Validation rules

No published validation rules were found for this return. Source

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.