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Report of the ECB-ESRB workstream on buffer usability

The ECB-ESRB workstream has published a report clarifying key concepts and methodologies for assessing buffer usability, releasability, capital headroom, and loss-absorbing capacity within the European banking sector. This initiative aims to foster a common understanding of the complex interactions between prudential and resolution frameworks. The report integrates these concepts into an updated analytical tool, USIT, to support consistent analyses across jurisdictions. While maintaining a neutral stance on policymaking, it provides a crucial technical foundation for future discussions on financial stability and regulatory effectiveness.

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Report of the ECB-ESRB workstream on buffer usability

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Every atomic assertion extracted from the underlying record, ranked by evidence strength.

The report defines key concepts of buffer usability, releasability, capital headroom, and loss-absorption capacity.

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Parallel use of Common Equity Tier 1 capital (CET1) to meet capital buffers and other requirements implies it may not be freely available for banks to absorb losses.

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The revised USIT provides a solid basis for assessing interactions among parallel frameworks and includes new features to quantify buffer usability, effective releasability, capital headroom, and loss-absorbing capacity.

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Limited buffer usability indicates a higher risk of banks breaching minimum requirements, such as the leverage ratio or resolution minimum requirements, during stress.

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Limited buffer usability could force banks into procyclical deleveraging during downturns, harming the real economy and financial stability.

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Bank resolution rules in the EU are defined in the Bank Recovery and Resolution Directive (BRRD) and the Single Resolution Mechanism Regulation (SRMR).

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Global Systemically Important Institution (G-SII) buffers are calibrated between 1-1.5% of Total Risk Exposure Amount (TREA) in the EU.

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Key elements of the EU prudential framework for banks are defined in the Capital Requirements Directive (CRD) and Regulation (CRR).

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The European Central Bank (ECB) and European Systemic Risk Board (ESRB) established a joint workstream.

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In the EU, there are no legal restrictions on the composition of resources eligible for meeting Minimum Requirement for Own Funds and Eligible Liabilities (MREL) and Total Loss-Absorbing Capacity (TLAC) requirements.

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The ECB-ESRB workstream was tasked with sharing analytical approaches developed within the ESRB community, clarifying underlying assumptions regarding buffer usability measurement, and exchanging experiences with policy implementation.

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The ECB-ESRB workstream was mandated to agree on terminology for interactions between prudential and resolution frameworks and their impact on macroprudential indicators.

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The ECB-ESRB workstream was tasked with implementing agreed concepts and methodologies in the buffer usability simulation tool (USIT) and sharing its code with all ESRB members via an open-source approach.

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This report delivers on the mandate of the ECB-ESRB workstream and continues the work started with the ESRB Analytical Task Force (ATF) on the overlap between capital buffers and minimum requirements.

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The primary objective of the single rulebook (CRD and CRR) is to improve the resilience of the EU financial system.

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Prudential requirements aim to mitigate systemic and idiosyncratic risks within the financial sector.

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The prudential and resolution frameworks complement each other and interact in complex ways.

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Global Systemically Important Institutions (G-SIIs) in the EU must deduct investments in TLAC-eligible liabilities issued by other G-SIIs from their own Total Loss-Absorbing Capacity (TLAC).

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Resolution requirements ensure credit institutions maintain adequate resources for a smooth and effective resolution process.

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A better understanding of the interactions between prudential and resolution frameworks is essential for achieving their objectives.

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Banks can use capital to meet prudential and resolution requirements in parallel.

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Breaches of the prudential leverage ratio could trigger an earlier "failing or likely to fail" (FOLTF) assessment.

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The concepts and analytical framework developed by the workstream provide a solid basis for measuring interactions between parallel frameworks and evaluating buffer usability consistently across jurisdictions.

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The report extends previous analyses by establishing common definitions for buffer usability concepts, considering complex interactions among parallel capital stacks.

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The report uses two distinct analytical approaches for buffer usability: a baseline approach for risk-weighted prudential stack and a complementary approach for both prudential and resolution frameworks.

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The complementary approach determines overall buffer usability as the maximum usability across all capital stacks, capturing a more comprehensive view of loss absorption capacity.

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The report introduces a methodology to assess how buffer releases can effectively increase capital headroom without triggering distribution restrictions.

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The report defines a methodology for calculating effective capital headroom and effective loss-absorbing capacity in going concern.

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Limited buffer usability does not limit banks' ability to use available effective capital headroom not overlapping with parallel requirements.

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Buffer usability and capital headroom, while distinct, jointly determine a bank's effective loss-absorbing capacity in going concern.

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Analytical challenges stem from differences in equity consumption for consolidation perimeters in prudential and resolution frameworks.

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Differing natures and scopes of prudential and resolution requirements pose analytical challenges to authorities.

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The report could support future policy discussions by serving as a shared reference point and offering a basis for consistent analyses.

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The quantifications in the report are for illustrative purposes to demonstrate how methodological differences lead to different results.

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The report illustrates the issue of differing consolidation perimeters and provides initial guidance on how to deal with them.

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The workstream developed the analytical framework to assess buffer usability concepts consistently.

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The analytical framework is incorporated into the USIT, originally developed by the ESRB Analytical Task Force (ATF).

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The report quantifies buffer usability, releasability, capital headroom, and loss-absorbing capacity for banks supervised under the Single Supervisory Mechanism (SSM).

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The USIT includes both baseline and complementary approaches to measure buffer usability.

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USIT can combine various assumptions, enabling authorities to assess the impact of regulatory reforms and policy options on buffer usability and releasability.

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Interactions within and between prudential and resolution frameworks can restrict the usability and effective releasability of capital buffers and banks' capital headroom.

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The ability to build up or release capital buffers may be limited if Common Equity Tier 1 (CET1) is "locked" in other parallel requirements.

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Banks' capital headroom and overall loss-absorbing capacity may be constrained if Common Equity Tier 1 (CET1) is "locked" in parallel requirements.

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The report adopts a neutral stance on policymaking and refrains from making policy recommendations.

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Pillar 1 banks include Global Systemically Important Institutions (G-SIIs), material subsidiaries of non-EU G-SIIs, banks with over €100 billion in total assets, and other systemically important banks.

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Breaches of resolution minimum requirements can lead to measures by relevant resolution authorities, including a possible "failing or likely to fail" (FOLTF) assessment of a bank, as specified in BRRD.

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The CRD and CRR implement international capital and liquidity standards from the Basel Committee on Banking Supervision (Basel III) in the EU.

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USIT has been updated based on the report's terminology and analytical approaches, and the new version is shared with national authorities and EU bodies.

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The updated analytical tool can support authorities in implementing policy measures and assessing the impact of regulatory reforms on buffer usability and releasability.

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The report does not make policy proposals on enhancing capital buffer usability.

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The report takes the current regulatory framework as given and aims to improve understanding of it.

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Possible changes in the regulatory framework would warrant further analyses and discussions on interactions between micro, macroprudential, and resolution frameworks.

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The prudential framework includes minimum requirements, capital buffers for loss absorption, and non-binding supervisory guidance.

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The resolution framework aims to safeguard critical bank functions, protect depositors, and minimize taxpayer costs in default events.

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The prudential framework focuses on going-concern requirements, while the resolution framework lays out gone-concern requirements.

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Both prudential and resolution frameworks enhance financial stability.

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Prudential requirements are determined by a bank's asset risk profile and leverage.

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Risk-weighted and leverage-based prudential frameworks include Pillar 1 (P1R) and Pillar 2 (P2R) requirements, considered minimum requirements.

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Pillar 1 requirements (P1R) are uniform for all banks, while Pillar 2 requirements (P2R) are institution-specific for risks not covered by P1R.

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Banks in the EU are subject to parallel prudential and resolution requirements.

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