Banking Law and Global Systemically Important Banks Rules in Spain

Introduction

Global Systemically Important Banks (G-SIBs) are banking groups whose failure could create serious disruption to the international financial system because of their size, interconnectedness, complexity, cross-border activities and importance to financial markets.

Spain regulates systemically important banks through a combination of Spanish banking legislation and directly applicable or implemented European Union rules, together with international standards developed by the Basel Committee on Banking Supervision and the Financial Stability Board.

The main objective is to ensure that a very large banking group maintains additional capital, stronger governance, effective risk controls and credible recovery and resolution arrangements so that financial distress does not threaten the broader financial system.

Legal and Regulatory Framework

1. Law 10/2014

Spain's principal prudential banking statute is Law 10/2014 of 26 June on the organisation, supervision and solvency of credit institutions.

It provides the domestic framework for matters including:

authorisation of credit institutions;

governance requirements;

prudential supervision;

capital requirements;

qualifying holdings;

supervisory powers; and

sanctions.

Systemically important banks are therefore subject to ordinary banking requirements as well as additional requirements resulting from their systemic importance.

2. EU Capital Requirements Framework

Spanish banks operate within the EU Capital Requirements Regulation and Capital Requirements Directive framework.

The CRR establishes important prudential requirements concerning capital, leverage, liquidity, exposures and regulatory reporting.

The CRD framework additionally permits authorities to impose capital buffers on institutions identified as global systemically important institutions (G-SIIs).

The European terminology “G-SII” broadly corresponds to the internationally used expression “G-SIB.”

Identification of G-SIBs

The international G-SIB methodology developed by the Basel Committee considers several broad indicators.

These include:

Size – the overall scale of the banking organisation.

Cross-jurisdictional activity – the extent of international operations.

Interconnectedness – relationships with other financial institutions.

Substitutability – whether other institutions could readily replace important services provided by the bank.

Complexity – involvement in complicated financial products and organisational structures.

The purpose is to identify institutions whose disorderly failure could create consequences beyond their shareholders and ordinary creditors.

Additional Capital Buffer

One of the most important consequences of G-SIB designation is the requirement to maintain an additional capital buffer.

The buffer supplements ordinary minimum capital and other applicable prudential buffers.

The underlying principle is that a bank capable of creating greater systemic damage should possess greater capacity to absorb losses.

The precise buffer applicable to an institution depends on its classification under the relevant regulatory methodology.

This requirement also creates incentives for banks to reduce unnecessary systemic complexity and interconnectedness.

Supervisory Structure in Spain

Spain participates in the Single Supervisory Mechanism (SSM).

Under this system, the European Central Bank exercises direct prudential supervision over significant credit institutions, working with national competent authorities including Banco de España.

Consequently, a major Spanish banking group may simultaneously be affected by:

Spanish banking legislation, EU prudential legislation, ECB supervision, Banco de España functions and international systemic-bank standards.

This multi-level system reflects the fact that the failure of a major Spanish banking group could have effects outside Spain.

Recovery Planning

Systemically important banks must prepare for severe financial stress before insolvency occurs.

A recovery plan establishes measures that the institution could use to restore financial viability.

Potential recovery measures may concern:

raising capital;

disposing of assets;

reducing risk;

obtaining liquidity;

restructuring business activities; and

reducing costs.

Recovery planning is intended to make management and supervisors consider serious stress scenarios before an actual crisis develops.

Resolution Framework

Recovery differs from resolution.

Recovery is primarily aimed at allowing the institution itself to restore financial strength. Resolution concerns intervention by resolution authorities where an institution is failing or likely to fail and the statutory conditions for resolution are satisfied.

Spain's resolution framework operates within the EU Bank Recovery and Resolution Directive architecture and the Banking Union's Single Resolution Mechanism.

For significant cross-border banking groups, the Single Resolution Board can play a central role.

Resolution tools can include business transfers, bridge institutions, asset-separation measures and bail-in, subject to the applicable legal conditions.

MREL and Loss-Absorbing Capacity

Large banking groups must maintain sufficient resources that can absorb losses and support recapitalisation during resolution.

An important European requirement is the Minimum Requirement for Own Funds and Eligible Liabilities (MREL).

For G-SIBs, international Total Loss-Absorbing Capacity (TLAC) standards are also relevant.

These mechanisms seek to reduce reliance on extraordinary taxpayer support.

The objective is that shareholders and appropriate creditors provide loss-absorbing capacity according to the legally established hierarchy when a bank enters resolution.

Corporate Governance

Systemically important banks require particularly strong governance because management failures can create consequences for the wider financial system.

Boards must oversee matters including:

risk appetite;

capital;

liquidity;

internal controls;

compliance;

remuneration;

operational resilience;

recovery planning; and

major strategic decisions.

The size of a bank does not reduce directors' governance responsibilities. Instead, systemic importance can justify more intensive supervisory expectations.

Stress Testing

Stress testing is another central supervisory instrument.

Authorities examine how a bank could perform under adverse economic and financial scenarios.

Scenarios may involve:

recession;

unemployment increases;

falling property values;

financial-market shocks;

credit deterioration;

interest-rate changes; or

funding pressures.

Stress testing assists regulators in assessing whether capital resources would remain adequate under severe conditions.

Relevant Case Laws

There is no single category of Spanish judicial decisions formally called “G-SIB case law.” The rules arise largely from EU prudential and resolution legislation. The following cases are particularly useful for understanding the judicial principles governing significant and systemically relevant banks within Spain's European regulatory framework.

1. Landeskreditbank Baden-Württemberg v ECB, Case C-450/17 P

This Court of Justice case concerned the supervisory structure established by the Single Supervisory Mechanism.

The litigation addressed the classification and supervision of credit institutions under the SSM framework.

Its significance for Spain is that major banks are supervised within an integrated European structure rather than through an entirely national system.

The judgment confirms the central role of the ECB within the prudential supervisory framework established by EU law.

2. Berlusconi and Fininvest, Case C-219/17

This case involved a proposed qualifying holding in a credit institution and the division of functions between national authorities and the ECB.

The Court emphasised the integrated character of the authorisation procedure.

For Spanish systemic banks, the case demonstrates that important ownership decisions can involve both Banco de España or other national authorities and the ECB within a single European supervisory process.

3. Kotnik and Others, Case C-526/14

This important Court of Justice judgment concerned State aid to banks and burden sharing by shareholders and subordinated creditors.

The Court examined EU principles governing public support for distressed financial institutions.

The case is relevant to G-SIB regulation because systemic importance does not automatically establish an unlimited entitlement to taxpayer-funded rescue.

Public intervention remains constrained by applicable EU law.

4. Ledra Advertising Ltd and Others v European Commission and ECB, Joined Cases C-8/15 P to C-10/15 P

The case arose from measures adopted during the Cypriot banking crisis.

The Court considered the responsibilities of EU institutions in connection with financial assistance arrangements.

Its broader importance lies in demonstrating that crisis-management measures affecting banks and depositors remain subject to EU legal principles, including protection of fundamental rights.

Systemic financial stability does not place banking intervention completely outside judicial scrutiny.

5. Dowling and Others, Case C-41/15

This case concerned the recapitalisation of an Irish financial institution during a serious financial crisis.

The Court considered the interaction between EU company-law protections and emergency measures adopted to preserve financial stability.

The judgment demonstrates that extraordinary banking interventions may be legally justified under specific circumstances, but their validity must be assessed within the governing EU legal framework.

This principle is relevant to Spanish systemic-bank crisis management.

6. Banco Santander SA v Commission – Spanish Financial Goodwill Litigation

Banco Santander participated in major EU litigation concerning Spain's tax treatment of financial goodwill associated with acquisitions of foreign shareholdings.

Although these cases primarily concern State-aid law rather than G-SIB designation, they are relevant to internationally active Spanish banking groups.

They demonstrate that national measures benefiting international corporate expansion remain subject to EU competition and State-aid controls.

Systemically important status does not exempt a banking group from ordinary EU economic law.

7. Banco Popular Español SA Resolution Litigation

The 2017 resolution of Banco Popular became one of the most significant practical tests of the EU's Single Resolution Mechanism.

The ECB determined that Banco Popular was failing or likely to fail, after which the Single Resolution Board adopted a resolution scheme and the bank was transferred to Banco Santander for a nominal price.

Subsequent litigation before EU courts examined numerous aspects of the resolution process, including valuation, procedural rights, property rights and the powers of EU institutions.

The Banco Popular litigation is especially important for Spain because it demonstrates how a distressed major Spanish bank can be handled through the Banking Union's supranational resolution machinery rather than through ordinary national insolvency alone.

Systemic Importance and Moral Hazard

G-SIB regulation attempts to address the problem commonly described as “too big to fail.”

If investors believe governments will always rescue major banks, they may underestimate risk and provide funding too cheaply.

Additional capital, TLAC, MREL and resolution planning attempt to reduce this problem by making failure more manageable without automatically transferring losses to taxpayers.

Systemic importance therefore results in additional regulatory obligations rather than a legal guarantee of rescue.

Cross-Border Banking Groups

Global banking groups present special difficulties because their subsidiaries, branches, assets and liabilities may exist in numerous countries.

Supervisors therefore need cooperation concerning:

consolidated supervision, information exchange, recovery planning, resolution strategies and crisis management.

A resolution action taken in one jurisdiction can have significant effects elsewhere.

This is one reason why international standards and EU Banking Union institutions are particularly important for major Spanish banking groups.

Operational and Cyber Resilience

Modern systemic banks depend heavily on digital infrastructure.

A major cyberattack or prolonged technology failure at a G-SIB could disrupt payments, securities transactions and access to deposits.

Operational resilience has therefore become an important component of systemic-bank supervision.

Banks must maintain appropriate governance over:

ICT systems;

cybersecurity;

outsourcing;

cloud providers;

business continuity;

incident management; and

third-party technology risks.

A bank may outsource a technological service, but it cannot simply outsource its regulatory responsibility.

Relationship Between G-SIBs and Other Systemically Important Institutions

Not every systemically important Spanish bank is necessarily a global systemically important institution.

EU banking regulation also recognises Other Systemically Important Institutions (O-SIIs).

An institution may therefore be systemically important to Spain or the European banking system without satisfying the international methodology for G-SIB classification.

This distinction is important because the designation methodology and applicable capital buffers may differ.

Conclusion

Banking law governing Global Systemically Important Banks in Spain operates through an integrated framework of Spanish legislation, EU prudential regulation, ECB supervision, Banking Union resolution rules and international Basel and Financial Stability Board standards.

Law 10/2014 provides an important Spanish foundation, while the CRR/CRD framework establishes major prudential requirements. The SSM provides enhanced supervision, and the Single Resolution Mechanism supplies the institutional structure for managing failing significant banks.

The principal G-SIB safeguards include additional capital buffers, consolidated supervision, stress testing, strong corporate governance, recovery planning, MREL/TLAC requirements and credible resolution strategies.

The cases discussed above demonstrate that systemic banking supervision and crisis management remain governed by law. EU institutions possess substantial supervisory and resolution powers, but those powers operate within statutory procedures and remain subject to judicial review.

The central regulatory principle is therefore that the greater the systemic consequences of a bank's failure, the stronger its preventive, loss-absorbing and resolution requirements must be. For Spain, these requirements are particularly important because its major banking groups operate extensively across national borders and form part of the wider European and international financial system.