The facts
- Who files
- Insurers (SII_TAX_IND) and insurance groups (SII_TAX_CON) (Annex 3 to NBB_2026_01). Source
- How often
- Annual. Source
- Deadline
- Same deadline as the annual quantitative reporting: 8 April 2026 (solo) and 20 May 2026 (group) for 31/12/2025. Source
- Format
- XML, CSV, Web form. OneGate domain INS: manual entry or XML (or CSV per table) following the SII_TAX protocol. Source
- How it is filed
- Filing routes recorded for the NBB: OneGate; NBB Supervision. See how firms file with the NBB.
- Status
- In force
- Group
- Insurers: national Solvency II extensions (national)
Templates (0)
The library lists no templates for this return.
The reporting table is Annex 1 to Circular NBB_2022_27; the NBB_2020_03 reporting template PDF shows rows R0590 to R0690 (deferred tax before and after the shock). The current spreadsheet sii_tax.xlsx could not be read (robots.txt), so tables are not listed. 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 (8)
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.
- Domain INS - XBRL reports: SII_AES, SII_QES, IRI_IND,...
List of returns · HTML
- OneGate protocol for SII_TAX_CON and SII_TAX_IND
Filing rules · PDF · 232.7 KB · 19 March 2021
SHA-256
27d2b02fe305show in full27d2b02fe30574397796b8bb6e216674823583692416b31ea4471960fa650c18 - SII_TAX tables (sii_tax.xlsx)
Template · XLSX · Not downloadable by software (behind a login or blocked)
Not requested: the NBB's robots.txt disallows .xlsx files for every user agent (checked 2026-11-11).
- NBB_2022_27 / Circulaire relative à la valorisation des actifs d'impôts différés et à l'ajustement visant à tenir compte de la capacité d'absorption de pertes des impôts différés
Reporting standard · HTML
- Circulaire NBB_2022_27: valorisation des actifs d'impôts différés et ajustement pour la capacité d'absorption de pertes des impôts différés
Reporting standard · PDF · 1.9 MB · 2 November 2022
SHA-256
220ac1ad711bshow in full220ac1ad711bff348233458485848a48262bb4dc5f953d7a595ce95ec41ed17f - NBB_2020_03 reporting template: deferred tax assets and loss-absorbing capacity of deferred taxes
Template · PDF · 155.6 KB · 2 March 2020
SHA-256
8e008b855446show in full8e008b855446acc94a9bdbb6f716df5a1084afe2f5a7365c11195ff6100a46db - Annexe 3: Liste des rapports financiers à déposer sur OneGate par les entreprises sous contrôle
List of returns · PDF · 289.8 KB · 7 January 2026
French. OneGate reports by domain (INS, CPA, REM, CPT, AML) with frequency, reference dates and 2026 collection dates.
SHA-256
3bdcd0129845show in full3bdcd0129845ed3b747db01ad2b4a3624ce420c3ff97cd4c8d410a2fbdec7122 - Annexe 1: Liste des rapports à déposer sur le portail NBB Supervision par les entreprises sous contrôle
List of returns · PDF · 424.0 KB · 7 January 2026
French. Qualitative reports by section: Solvency II general reports (RSR, SFCR, ORSA, pre-emptive recovery plan), national governance reports (B.1 to B.17), actuarial and financial reports (C), internal model and USP reports (D), AML reports (E) and other documents (F), for solo undertakings, groups, EEA branches and Article 276 undertakings.
SHA-256
ba89cfde782eshow in fullba89cfde782eebe8f4eac541735a6d3da67f04c604cac2f4631b6b1dbabe126e
Sources
Every page and document this return's facts were read from.
- nbb.be/doc/cp/fr/2022/20221102_nbb_2022_27.pdf
- nbb.be/doc/cp/fr/2026/20260107_nbb_2026_01_annexe_3.pdf
- nbb.be/en/reporting/onegate-reporting/general-access-onegate/onegate-documentation/domain-ins-xbrl-reports-siiaes-siiqes-iriind
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.
