Basel IV / CRR3 Group-Wide Programme
Three-year programme for a major European G-SIB: full programme ownership of SA-CR, FRTB, Output Floor, and CVA across all risk classes, geographies, and legal entities.
Qualitative outcome description. Source: anonymised Ezelman client mandate; bank name withheld under NDA. Specific basis-point and euro figures withheld at client request, consistent with a sitewide policy that every figure on ezelman.com is either (a) public-sourced, (b) an estimate with stated methodology, or (c) qualitative.
The Challenge
The client faced a complex 36-month roadmap to full CRR3 compliance across 6 major regulatory workstreams — Norms and Advocacy, Simulation and Explain, Data Management, Build and Adapt Chains, Permanent Control and Independent Review, Enhance Stress Testing. With operations spanning across multiple jurisdictions and business lines (Global Banking, Global Markets, Retail…), coordination, knowledge transfer, and governance risk were significant. The bank's internal teams had limited CRR3 implementation experience, and supervisory expectations were rapidly evolving. A delay in any workstream risked supervisory escalation and reputational impact.
Our Approach
We took full programme ownership, establishing a steering committee animated by a senior practitioner with 20 years inside European G-SIBs. We deployed the Ezelman DELIVERY™ framework — the eight-pillar operating grammar that kept CRO, CFO, Supervisory Liaison, and Programme Director in lockstep over 36 months.
DIAGNOSE
CRR3 gap analysis across all risks and geographies; early quantified RWA impact by portfolio.
ENGAGE
LoD2 and JST alignment sessions in month 2 anchored interpretations before specs.
LEAD
Board-level sponsorship; CRR3 reframed as capital-optimisation narrative, not cost.
IMPLEMENT
New CRR3 data sourcing, calculation engines esp. on credit risk mitigation, SA-CR on IRB scope, CCR and CVA, Output Floor…
VALIDATE
Independent validation and 3 quarterly closing dual-run prior to FTA.
EMBED
Client teams led workstream delivery by month 24; advisory dependency phased out.
REPORT
COREP / FINREP / Pillar 3 under new taxonomy with narrative supporting every delta.
YIELD
Post go-live RWA optimisation released a material CET1 saving — sufficient to fund the programme several times over.
Qualitative comparison. Peer baseline is directional, anchored to the Pillar 3 disclosures of European G-SIBs that have published CRR3 first-time-adoption impact (see each bank's FY2025 Pillar 3 report for the RWA bridge under the SA-CR, FRTB, Output Floor and CVA components). Mandate outcome is anonymised at client request.
Beneath the framework, three operating principles carried the programme:
1. Structured Programme Governance
Weekly steering meetings with the Group CRO and CFO and quarterly with all Business Lines CROs and CFOs. Quarterly supervisory-readiness reviews with the JST. Governance model embedded accountability at business unit and central risk levels. We drafted and maintained the client's CRR3 compliance calendars, ensuring no regulatory deadlines were missed.
2. Deep Technical Expertise on Each Workstream
Dedicated senior advisors for each pillar (Norms & Advocacy, Training, Credit Risk SA and IRB, CCR and CVA, Operational risk, Data Management, Build and Adapt Chains, Output Floor…). Monthly implementation meetings, gap-closure tracking, and real-time guidance on supervisory expectations. Each workstream was delivered to “first-time supervisory acceptance” standard.
3. Supervisory Readiness
Mock-inspection sessions with ECB-experienced advisors. Gamification of interviews with the supervisors. We drafted responses to anticipated supervisory questions, stress-tested the bank's interpretations against recent ECB decisions, and ensured compliance documentation met SSM standards for rigour and clarity.
The 7 Workstreams (covering all risks and entities)
Each workstream had a named senior owner, a quarterly milestone calendar, and a supervisory-acceptance test. The seven moved in parallel under one operating grammar.
Norms, Advocacy and Training
Ownership of the CRR3 / Basel IV interpretive register: tracking EBA Level-2 mandates, drafting the bank's reading of contested provisions, and producing the role-based curriculum that brought CRO, CFO, business-line risk teams and front office onto the same vocabulary before the build phase opened.
Simulation and Explain (incl. QIS)
End-to-end Day-1 RWA bridge across SA-CR, IRB, CCR, CVA and Output Floor. Quantitative-impact studies for ECB / EBA, internal "explain" memos that decomposed every bps of uplift into a named driver, and the early-simulation engine that surfaced optimisation levers before the build fixed them.
Data Management
New CRR3 attributes sourced, lineage end-to-end, BCBS-239 controls applied. Master-data alignment across legal entities, golden-source contracts, and a data-quality dashboard wired into the LoD2 control framework before the calculation engines went live.
Build and Adapt Chains
Calculation engines redesigned for SA-CR (incl. CRM eligibility under CRR3), IRB scope adjustments, CCR / CVA frameworks, and the Output Floor mechanic. Adaptation of upstream and downstream chains — FINREP / COREP, capital allocation, business-line reporting — under one taxonomy.
Enhance Stress Testing
Stress-test framework re-articulated under CRR3 starting points, with new SA-CR / Output-Floor mechanics flowing into ICAAP, EBA EU-wide stress test and the bank's reverse stress-test scenarios. Reconciliation between the prudential stack and the stress engine documented end-to-end.
Permanent Control and Independent Reviews
LoD2 control plan rebuilt around CRR3 attributes, independent validation of the new chains by Model Risk Management, and LoD3 (internal audit) review prior to FTA — with named issue-closure owners and a remediation calendar visible at steering committee.
Steering
Cross-workstream programme office: weekly Group CRO / CFO steering, quarterly Business-Line CRO / CFO governance, JST supervisory-readiness reviews, and the compliance calendar that kept every regulatory deadline visible at board level. The workstream that made the other six land on time.
Key Deliverables
Governance Framework
Project streamlining, workstream accountability matrix, steering committee charter, RACI, escalation protocols.
Training Programmes
Role-based training for CRO, CFO, risk teams, and business units. Quarterly “Supervisor's Perspective” briefings for the Executive Risk Committee.
Specifications
From normative specifications to business requirements descriptions on methodologies, data, calculation engines, processes, reporting for SA-CR, IRB, CCR and CVA, Output Floor — pre-packaged for ECB inspection.
Control Framework
Complete revamping of the regulatory capital group-wide control framework as well as the deployment of the data control framework on new CRR3 data.
Supervisory Responses
Several regulatory correspondence packages including permission on other physical collateral eligibility under F-IRB, notification on reduction of scope of models, response to ECB data requests, interpretation letters, and QIS.
Parallel Running & Validation
3 quarterly closing parallel-run protocol for CR and CCR / CVA. Validation of implementation by LoD2 and review by LoD3. Testing protocols for Output Floor mechanics.
Results
The client achieved full CRR3 compliance within the 36-month timeline, with five outcomes the steering committee tracked from day one:
0 supervisory findings
ECB inspection of CRR3 readiness resulted in no critical or major findings.
RWA uplift in line with capital planning
Within supervisory expectations and benchmarked favourably vs. peer group disclosures published in 2025 Pillar 3 reports.
3 quarterly closing parallel run
Flawless transition from legacy to new capital frameworks — CR and CCR / CVA reconciled across three closes prior to FTA.
Enhanced governance maturity
CRR3 programme became the model for subsequent regulatory programmes and create momentum for the follow-up on CRR3 related EBA mandates.
Internal capability uplift
By month 24, client teams were managing 80% of programme workload independently.
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