08 · Pillar 3 & the data hub

Art 431–455 CRR · EBA ITS

Purpose & history

Discipline by disclosure — industrialised

Pillar 3's premise is that markets punish what they can see; its history is the discovery that they can only see what is comparable. Free-form PDF disclosures failed that test, so the EU rebuilt the pillar as fixed templates (the EBA ITS: KM1 key metrics, OV1 RWA overview, CR/MR/OR detail, LR, LIQ, the MREL set), on fixed frequencies, scoped by proportionality (large listed institutions carry the full set; SNCIs a fraction), and — the current step — centralised into the EBA data hub: banks file once, machine-readable, and the EBA publishes, making cross-bank comparison a query rather than a project. Two live fronts: the floor split (U-TREA vs S-TREA disclosure makes every bank's model reliance public), and ESG templates (taxonomy alignment, transition exposure) — where disclosure is doing regulatory work capital rules have so far declined to do.

Requirements

Scope & frequency mapTemplate set per institution category; quarterly (KM1 and friends), semi-annual, annual layers tracked as a compliance calendar.

Financial-reporting-grade controlsBoard-approved disclosure policy, sign-off, reconciliation to COREP/FINREP — Pillar 3 errors are treated as reporting failures, not typos.

Data-hub workflowSubmission via the EBA pipeline, resubmission handling, consistency validations passed before publication.

ESG templatesTaxonomy ratios and transition/physical risk tables produced from data that mostly lives outside risk systems — the operational lift is data acquisition, not formatting.

Narrative coherencePillar 3, the annual report and investor materials tell one story; divergence is what analysts and supervisors both mine for.

Calculations

Reading a KM1 like an analyst Disclosed: U-TREA €64bn · S-TREA €100bn → model reliance U/S = 64% → floor binds from x = 65% (2028); expected uplift ≈ 72.5/64 − 1 = +13% RWA by 2030. One division, publicly available, per bank — this is why the floor split was fought over as disclosure, not just as capital.

Distance-to-MDA, from public data CET1 13.2% vs disclosed requirement 11.55% → headroom 1.65% × TREA = €1.2bn of distributions-at-risk visibility. The market prices this line faster than any supervisor acts on it.

Changes & sources

Sources: Art 431–455 CRR; EBA Pillar 3 ITS (integrated framework); data-hub decisions and phase-in for smaller institutions.
Watch: hub coverage extending down the size ladder, and ESG template stabilisation — the templates are moving faster than the underlying data quality.

Independent analysis by Elderlake Partners, as at August 2026. Not legal, accounting or supervisory advice.