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The Single Rulebook
The Single Rulebook aims to provide a single set of harmonised prudential rules which institutions throughout the EU must respect. The term Single Rulebook was coined in 2009 by the European Council in order to refer to the aim of a unified regulatory framework for the EU financial sector that would complete the single market in financial services. This will ensure uniform application of Basel III in all Member States. It will close regulatory loopholes and will thus contribute to a more effective functioning of the Single Market.
Why do we need a Single Rulebook?
European banking legislation was previously based on Directives which left room for significant divergences in national rules. This has led to different interpretations of those rules and to legal uncertainty, enabling institutions to exploit regulatory loopholes, distorting competition, and making it burdensome for firms to operate across the Single Market.
Moreover, the financial crisis has shown that in integrated financial markets, these divergences can have very disruptive effects. Once risks generated under the curtain of minimum harmonisation materialise, the impact is can often not be contained within national boundaries but spread across the EU single market.
It is, therefore, crucial to use exactly the same definition of regulatory aggregates and the same methodologies for the calculation of key requirements, such as capital ratios and liquidity standards.
A Single Rulebook for a more resilient, transparent and efficient banking sector
A Single Rulebook aims to address these shortcomings and lead to a more resilient, more transparent, and more efficient European banking sector:
Single Rulebook and flexibility
Although a Single Rulebook is a key for Europe, it is true that the new regulatory framework has to be shaped in such a way to leave a certain degree of national flexibility in the activation of macro prudential tools, as credit and economic cycles are not synchronised across the EU.
For this reason, Member States have retained some possibilities to require their institutions to hold more capital. For example, Member States will retain the possibility to set higher capital requirements for real estate lending, thereby being able to address real estate bubbles. If they do, this will also apply to institutions from other Member States that do business in that Member State. Moreover, each Member State is responsible for adjusting the level of its countercyclical buffer to its economic situation and to protect its economy/banking sector from any other structural variables that can pose a threat to financial stability. Furthermore, Member States would naturally retain current powers under "pillar 2", i.e. the ability to impose additional requirements on a specific bank following the supervisory review process (SREP).
EBA's role in building of the Single Rulebook
The European Banking Authority plays a key role in building up of the Single Rulebook in banking.
The EBA is mandated to produce a large number of Binding Technical Standards (BTS) for the implementation of the CRD IV package, the BRRD and the DGSD. BTS are legal acts which specify particular aspects of an EU legislative text (Directive or Regulation) and aim at ensuring consistent harmonisation in specific areas. BTS are always finally adopted by the European Commission by means of regulations or decisions. At that point they become legally binding and directly applicable in all Member States. This means that, on the date of their entry into force, they become part of the national law of the Member States and their implementation into national law is not only unnecessary but also prohibited.
Furthermore, the EBA is coordinating a Single Rulebook Q&A process. Through this process, the EBA is in charge of answering questions from stakeholders on the practical implementation of the CRD IV package; BRRD; and, the DGSD, including technical standards and guidelines as part of the legislative texts.
Finally, as part of its contribution to a common supervisory culture across the EU, the EBA will review the application of all BTS adopted by the European Commission and propose amendments where appropriate.