National Bank of Belgium (NBB): regulatory returns

What this page covers

Every periodic return the National Bank of Belgium (NBB) lists for the firms it supervises prudentially, in its own lists of reporting requirements: 72 returns, of which 34 are national (the NBB's own; group names end '(national)') and 38 are EU-harmonised returns that the NBB collects (group names end '(EU, EBA)', '(EU, EIOPA)', '(EU, ECB and EBA)', '(EU, ESAs)' or '(EU, SRB)'). For EU returns this entry records only the Belgian facts (filing route, the NBB's dates where it states them, its own documents and checks); the templates and EU validation rules are in the library's EBA and EIOPA entries. Anchor lists: the NBB's 'Reporting and notification portal' page (periodic reporting for banks and stockbroking firms, insurers, and payment and e-money institutions); the OneGate documentation index and its domain pages (MBS XBRL reports, MBS XML reports, MUN, NRA, INS, CPA, DOR, PAY, PST); Communication NBB_2025_19 and its two annexes (qualitative reporting by credit institutions and stockbroking firms); and Communication NBB_2026_01 and its three annexes (every qualitative report, auditor report and OneGate financial report insurers, insurance groups and their auditors submit in 2026). The circulars these lists cite were read for frequencies, deadlines and content: NBB_2025_17 (proprietary trading), NBB_2025_18, NBB_2025_21 and NBB_2025_22 (payment and e-money institutions), NBB_2026_02 (AML questionnaire), NBB_2026_05 (DORA), NBB_2023_17, NBB_2026_18, NBB_2018_16, NBB_2018_27, NBB_2016_02, NBB_2019_25, NBB_2022_27, NBB_2024_08 and NBB_2024_11. Languages: the regulator, portal, OneGate and bank pages and NBB_2025_18, NBB_2025_19, NBB_2026_02, NBB_2026_05, NBB_2023_17 and NBB_2026_18 were read in English; the insurance list (NBB_2026_01 and annexes), most insurance circulars, the Scheme A rules, the proprietary trading circular, the deposit reporting circular and the payment and e-money institution circulars exist only in French or Dutch and were read in French; the domain CPA page was read in Dutch (its English page says it is not available in English). Covered populations: credit institutions, stockbroking firms, insurers and insurance groups (with their accredited auditors), and payment and e-money institutions; some returns cover several sectors (DORA register, AML questionnaire and reports, capital statements, management statements). Variants of one return (solo and consolidated; the four supervisory benchmarking reports; the split remuneration reports for banks and investment firms; Belgian GAAP reports in domain CPA) are recorded as one return. Left out: statistical returns collected for the ECB or Statbel through OneGate (Scheme A is kept because the NBB describes it as supervisory; left out are the structural surveys BNK, ESB and ESA, MFI interest rates MIR, RIAD attributes, balance of payments and securities holdings); event-driven notifications and applications (DORA major ICT incident and cyber threat reports and contact details, PSD2 incident reports, notifications of impracticability of bail-in clauses, qualifying holding (QLF) and fit and proper (FAP) forms, external functions, passporting, acquisitions, outsourcing notifications); the B2P2 (Basel II Pillar 2 forms 90.30 to 90.34), FIB (form 03.70) and SEG (form 20.11) XBRL reports and the ALR resolution report, which the MBS and NRA pages still list but without saying who files them or how often; COVID19 moratoria reporting and IF_TM threshold monitoring (listed in the protocol but not on the domain page); the insurers' activity reports of control functions (given only on first request), annual reports and minutes of general meetings and the volatility adjustment notification letter; and the reporting of mutual guarantee societies, public transport bodies (Circulars NBB_2025_14 and NBB_2025_15), central securities depositories and settlement institutions, crypto-asset service providers, health insurance funds (supervised by the OCM) and financial holding companies (Communication NBB_2022_30), which were not covered. The Central Credit Registers and the Central Balance Sheet Office are not prudential returns and are left out. Source

How firms file

• OneGate

  The NBB's completely secure online platform for reporting entities and their agents, who complete and submit forms online or upload files. Prudential returns are filed in its domains (MBS for banks, stockbroking firms and payment and e-money institutions; INS and CPA for insurers; MUN for remuneration; NRA for resolution; DOR for DORA; AML; PST and others; see the OneGate documentation page). A test environment is available. Source

• NBB Supervision

  The NBB's secure platform for qualitative documents: supervised institutions and their auditors follow their reporting obligations, upload qualitative reports (governance, compliance, RSR, SFCR, ORSA, auditor reports) and notify external functions. Available since 3 October 2022 at supervision.nbb.be; it gives direct access to OneGate. Source

Data the NBB publishes from the returns

• Aggregate statistical data on insurance and reinsurance undertakings (Solvency II supervisory disclosure)

  Added up across firms · PDF and Excel

  Templates A to D published under Article 31(2)(c) of the Solvency II Directive: Template A gives, for the insurers the NBB supervises, the number of undertakings and amounts of assets, liabilities, technical provisions and own funds by type (life, non-life, composite, reinsurance) for 2021 to 2024; Template B covers groups; Templates C and D cover the NBB's supervisory activity. Updated yearly. Source

  From: SII_AES, SII_ARG

  Reuse: No separate terms on the page; the NBB's general terms apply (see the licence block).

• Supervisory disclosure: statistical data on the Belgian banking and investment firm sector

  Added up across firms · Excel files

  Annex 4 of the NBB's supervisory disclosure under the EBA framework: aggregate data on the Belgian banking and investment firms sector, credit risk, operational risk, market risk and supervisory actions and measures. The NBB also publishes yearly aggregate loss data on exposures secured by Belgian immovable property (Article 430a(3) CRR). Source

  From: COREP_OF

  Reuse: No separate terms on the page; the NBB's general terms apply (see the licence block).

Reuse terms for the NBB's documents

National Bank of Belgium: Copyright and use of information, checked 11 November 2026. In the NBB's words:

The National Bank of Belgium (hereinafter the NBB) expressly reserves all copyright in its website. [...] Visitors may freely use information obtained directly from the website. This information may be distributed or reproduced, provided the integrity and accuracy thereof are maintained and the NBB is acknowledged as the source. [...] The distribution, reproduction and use of certain information, such as statistics, may be subject to specific conditions. Where information obtained from the NBB's website is incorporated into documents or files provided to third parties for a fee (regardless of the type of support), the natural or legal person providing said documents or files must notify those third parties beforehand that the information is also available free of charge on the NBB's website. The reproduction or distribution, in whole or in part, of documents bearing the name of their author(s) (such as NBB working papers, contributions to NBB journals, and other studies) in the form of a separate publication, in hard copy or electronic format, is permitted only with the NBB's express prior written consent.

Can others share copies?

Allowed with conditions.

Conditions

Keep the information complete and accurate and name the NBB as the source. If it is passed on for a fee, tell recipients it is free on the NBB's website. Documents bearing an author's name (working papers, journal articles, studies) need the NBB's prior written consent. Statistics may have their own conditions.

What the library does

Keeps copies of the documents, as the terms allow. The NBB lets anyone distribute or reproduce information from its website if it is kept accurate and the NBB is named as the source. Reporting instructions, templates and taxonomies carry no author's name, so copies are kept. Author-named studies, EU legal texts and EBA, EIOPA or ECB material are not copied here.

Notice the NBB's terms ask for: 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.

What could not be verified

Said plainly, so nobody relies on a fact the sources do not give.

• robots.txt on www.nbb.be disallows .xlsx, .xls, .xml, .xsd, .csv, .doc and .docx files and every URL with a query string (read 2026-11-11), so no NBB spreadsheet was read: the validation rule files for PI (pi_v06.xlsx), ELMI (elmi_v09.xlsx), IF (if-2014.xlsx), PHL (phl2024.xlsx), IRI (publication_iri_rules.xlsx), TREP (trep_2015_nl/fr.xlsx) and the CPA validation tests (.doc/.xls) are not counted, and the table layouts of COOP_S, SII_TAX, LIQUIDITY (NBB_2024_11 annex), the PI and ELMI circular annexes and the payment statistics reporting schemes are not itemised. These files are recorded as documents with downloadable false and no size or hash.
• EU returns of banks (COREP, FINREP, AE, FP, IRRBB, ESG, G-SII, FC, benchmarking, IFR reports): the NBB pages read do not state per-report frequencies or remittance dates (except that COREP_ALM and COREP_LCR_DA are monthly); no NBB reporting calendar for banks was found, so deadlines point to the EBA entry.
• Who files each EU bank report (for example which banks file G-SII, FC or FP, and the split between significant and less significant institutions) is not stated on the OneGate MBS page; only general scope statements were found.
• Scheme A (SCHA): the table list is defined in the Scheme A Book I circulars (NBB_2021_01, NBB_2021_11 and earlier, French and Dutch only), which were not read; the deadline is not stated on the Scheme A or MBS XML pages.
• IF (stockbroking firms' national financial reporting): the protocol (2014) gives 15 forms N01 to N15 but no names, frequency or deadline; no current circular for this report was found on the stockbroking firm pages read.
• BFP (deposit reporting): the circular linked on the MBS XML page is a draft with provisional reference 'NBB_2017_xx', dated 19 July 2017 on page 1 and 25 April 2017 in its footers; its annex table 00.1B was not in the PDF read.
• COOP_S, PI-ELMI-QUAL and SEPA_IPR: deadlines and frequencies (other than 'annual report' for COOP_S) are not stated on the pages read.
• Citizen lending (CITIZENS_LENDING_INS, domain CPT): Circular NBB_2015_16 cited in Annex 3 to NBB_2026_01 was not found by web search or on the insurance circular lists read, so its purpose is not described.
• Payment and e-money institutions' management committee report and half-yearly statement (Circular NBB_2025_18): the channel (NBB Supervision or OneGate PI-ELMI-QUAL) is not stated on the pages read.
• Annex 2 to Communication NBB_2025_19 (stockbroking firms) refers to 'Circular XXX' as the source of the management committee statement on periodic prudential reporting (C.3), a placeholder; Annex 1 (credit institutions) gives Circular NBB_2025_18. Annex 2 also cites 'Communication NBB_2022_99' for external functions where Annex 1 cites NBB_2022_19.
• Circular NBB_2026_02 page: the links to the circular and its annexes are malformed (backslash paths under /en/financial-supervision/news/); the files were requested at the normalised /doc/cp/eng/2026/ addresses, which returned them.
• Domain CPA (insurers' prudential data collection): the English page says the information is not available in English; the Dutch page was used. The CPA data dictionary (version 1.5) has a server date of 2006 and may not reflect the current New Reporting contents.
• Insurers: Annex 3 to NBB_2026_01 lists SII_AES and SII_QES for both Belgian undertakings and branches of non-EEA insurers, while EIOPA's taxonomy has separate branch entry points (AEB, QEB); which entry point branches use was not confirmed.
• Insurers' national options for Solvency II reporting (Circular NBB_2016_33) and the exercise of options PDF were not read.
• The current remuneration reports (REM_BM_CI/IF, REM_GAP_CI/IF, REM_HE_CI/IF) start on 2026-12-01 on the MUN page, replacing the combined REM_BM, REM_GAP and REM_HE reports that ended on 2026-11-30; the first filing date of the split reports is not stated.
• FINREP data points: the MBS page news of 10/12/2025 publishes a Belgian extension to the FINREP data points taxonomy for reference dates from 31/12/2025, while the news of 14/04/2026 says there will no longer be a Belgian extension and institutions must use the EBA taxonomy via FINREP_DP.
• No firm-by-firm data from returns published by the NBB was found; no central SFCR or Pillar 3 repository on www.nbb.be was found on the pages read.
• Periodic AML/CFT questionnaire: Annex 1 to Communication NBB_2025_19 (B.5) gives NBB Supervision as the transmission channel and 'on a continuous basis' as the frequency, while Circular NBB_2026_02 says the questionnaire is answered through OneGate electronic forms by 15 May 2026 and Annex 3 to NBB_2026_01 lists AML_INSURANCE in OneGate domain AML; this file follows NBB_2026_02.

Sources

• What is financial supervision?
• Reporting and notification portal
• OneGate documentation (domain index)
• Domain MBS - XBRL reports
• Domain MBS - XML reports
• Domain MUN
• Domain NRA
• Domain INS
• Domain DOR
• Domain PAY (SEPA_IPR)
• Domain PST
• Domain CPA (Dutch)
• Communication NBB_2025_19 (qualitative reporting by credit institutions and stockbroking firms)
• Communication NBB_2026_01 (insurance reports to be sent in 2026)
• Circular NBB_2025_18
• Circular NBB_2025_21 (payment institutions)
• Circulaire NBB_2025_22 (e-money institutions)
• Circular NBB_2026_02 (AML questionnaire)
• Circulaire NBB_2025_17 (proprietary trading reporting)
• Insurance circulars: Reporting
• Copyright and use of information

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. See every regulator in the regulatory returns library.