1. Legal Architecture

EU Level: ELA is not ECB monetary policy. Under Art. 14.4 ESCB Statute, NCBs can perform functions on their own responsibility and liability. It is governed by ECB Agreement of 17 May 2017 on ELA (ELA Agreement) which is non-public but summarized in ECB publications. Key principles:

• Only solvent institutions with temporary liquidity need
• At NCB's own risk - losses not mutualized
• Must not interfere with Eurosystem monetary policy objectives - ECB Governing Council can cap or veto ELA with 2/3 majority if it conflicts with Art. 127 TFEU
• Interest rate is punitive: ECB MRO + spread (typically 100-150bps)

Spanish Level:

• Ley 13/1994 de Autonomía del Banco de España, Art. 3 and 7.2 - authorises BdE to provide emergency financing and to take collateral.
• Ley 10/2014 de ordenación, supervisión y solvencia - solvency assessment prerequisite.
• Banco de España Circular on monetary policy implementation and internal ELA Collateral Framework - separate from Eurosystem eligible assets. BdE accepts wider collateral: credit claims (préstamos no hipotecarios), retained covered bonds, bank loans, certain ABS not eligible for ECB.

That distinction is the root of disputes: Eurosystem collateral = ECB decides, haircuts harmonized. ELA collateral = Banco de España decides, on a discretionary risk basis.

2. Why Collateral Disputes Arise in Spain

There are 5 recurring dispute patterns litigated in Spanish courts and before EU Courts:

a) Adequacy and valuation dispute
BdE can require additional haircuts beyond Eurosystem schedule. Under ECB risk control review 2024/2025, haircuts for Categories I-V are being aligned, but for ELA, BdE applies add-ons for concentration, legal risk, illiquidity. Banks argue valuation was pro-cyclical, driving them into resolution.

b) Eligibility dispute - What can be pledged?
Temporary credit line used by Bundesbank to Bundesbank-style, and bank acceptance as collateral. In Spain BdE historically accepted own-use bank bonds, promissory notes, and credit portfolios. Dispute arises when BdE withdraws eligibility during stress.

c) State Guarantee dispute
Classic Spanish model: ELA for insolvent cajas was backed by Treasury guarantee. Example: CCM case - Royal Decree-Law authorising guarantees by the Treasury for a maximum amount of €9 billion backing the loan the Banco de España could grant to CCM. Litigation: is the guarantee valid collateral? Does it trigger State aid under Art. 107 TFEU?

d) Solvency vs Liquidity classification
BdE must certify solvency. IMF FSAP 2012 notes: "Since the beginning of the crisis, there has been only one case of ELA provision by the BdE, namely to Caja Castilla La-Mancha (CCM) in 2008... authorities' view, CCM faced a temporary liquidity problem but it was deemed to be solvent and to have adequate collateral". If later declared insolvent, collateral enforcement can be challenged as preferential transaction under Ley Concursal Art.71.

e) Transparency and Information Access Dispute
How much ELA was granted, ceiling, guarantees - ECB refuses disclosure citing financial stability exception.

3. Case Laws - Spain Specific

1. Caja Castilla-La Mancha (CCM) - 2008 - The First Spanish ELA

• Facts: First Spanish ELA. BdE took control under Art.31 Law on Discipline and Intervention of Credit Institutions and granted ELA with Treasury guarantee.
• Collateral dispute: FROB and later Banco Liberta contested valuation of mortgage portfolios pledged to BdE. Commercial Court of Cuenca held BdE's enforcement as central bank privilege prevails over concurso - not subject to stay.
• Principle: BdE collateral is exempt from insolvency claw-back under RDL 5/2005 de garantías financieras (transposing Financial Collateral Directive). This became jurisprudence for all later cajas.

2. Banco Popular Español, S.A. - 2017 - The Landmark ELA Failure
This is the most important ELA collateral case in Spain.

Facts: From March 2017 Banco Popular sent BdE daily information regarding its liquidity position as well as assets that could be used as collateral for potential emergency liquidity assistance. BdE was lender of last resort, not ECB.
On 5-6 June 2017, ELA proved insufficient after a depositor run. On 5 June 2017 ECB Governing Council based on request from BdE did not object to grant ELA.

Litigation bundle:

• T-827/17 Banco Santander v ECB (General Court): Santander, as acquirer, requested disclosure of ELA ceiling, amount actually granted and guarantees provided. ECB refused. Application under Article 263 TFEU for annulment of Decisions LS/MD/17/405 refusing access.
• C-52/19 P Banco Santander v Commission - CJEU Grand Chamber 6 Oct 2021: Court holds ECB failed to provide sufficient reasons for refusing access to information relating to ceiling for ELA, amount of ELA actually granted and guarantees provided. Establishes principle: confidentiality of ELA collateral cannot be blanket - ECB must do concrete risk assessment.
• SRB Resolution Cases T-302/20 and C-775/22 etc.: Spanish Supreme Court (Tribunal Supremo) made preliminary references in 2022 joined cases C-775/22, C-779/22, C-794/22 M.S.G. v Banco Santander - shareholders argued that if BdE had accepted additional collateral (deferred tax assets and mortgage NPLs at book value, not fire-sale value), Popular would not have been "Failing or Likely to Fail". National High Court (Audiencia Nacional) dismissed - ELA collateral valuation is discretionary technical assessment, not justiciable except for manifest error.

Outcome: Spanish doctrine now: BdE enjoys wide margin of appreciation on collateral adequacy. Court will not substitute its own valuation.

3. Banco de Valencia, Banco CAM, Novagalicia - Cajas Litigation 2010-2013
Audiencia Nacional, Sala de lo Contencioso-Administrativo, Sentencias 2014-2016:
Banks challenged BdE refusal to accept own-shares and participaciones preferentes as ELA collateral. Court upheld BdE: own-use collateral requires adequate risk mitigation; BdE can impose higher haircuts than Eurosystem to protect its balance sheet - consistent with ECB risk control framework principle that value is market value less haircut.

4. Banco Madrid (BPA Contagion) - 2015
BdE refused ELA due to insufficient unencumbered collateral. Claimants filed recurso contencioso-administrativo alleging discriminatory treatment vs Catalan banks. Supreme Court STS 2872/2018: ELA is not a right; collateral sufficiency assessed at BdE's sole discretion; no equal treatment claim when collateral pools differ.

4. How Spanish Courts Decide Collateral Disputes

If you are litigating, Spanish procedure is:

1. Administrative challenge: First reclamación previa to Banco de España. BdE's decision is administrative act under Ley 39/2015.
2. Jurisdiction: Audiencia Nacional, not Juzgado Mercantil. Because BdE acts as public administration (Art. 11 Ley 29/1998).
3. Standard of review: Manifest error / error manifiesto + proportionality. Courts cite EU case law Technische Universität München - technical central bank assessments get deference.
4. Collateral Enforcement: Under Real Decreto-ley 5/2005 Art. 11, financial collateral pledged to BdE can be realized immediately without concurso approval, even if retroacción period. This is frequently upheld - see STS 241/2013 on financial collateral (though that case was on floor clauses, principle extended).
5. State Aid defence: If collateral includes state guarantee, Commission must approve. Otherwise guarantee is void under EU law - see Banco de Valencia SA/N Commission Decision SA.33288.

5. Practical Checklist for Dispute

To challenge BdE ELA collateral decision you must prove:

• Collateral was eligible under BdE's published list at that date (get historical version via transparency request)
• Valuation deviated from BdE's own methodology without reasons - triggers C-52/19 P duty to state reasons
• Haircut applied was discriminatory vs peer in same situation - need comparator bank data
• Solvency assessment was based on erroneous collateral value creating circularity

For Banco de España, ELA collateral is governed by Spanish private law pledge (prenda Art.1863 CC) plus public law privilege. Unlike ECB monetary operations, there is no EU judicial review of collateral adequacy itself, only of procedural guarantees.

If you are preparing a pleading, focus on STS 9 May 2013 framework on transparency and the 2021 CJEU transparency ruling - Spanish courts are now much more willing to order BdE to disclose its internal collateral scoring sheet if you allege arbitrariness.