Regulatory Capital and Minimum Capital Requirements in Spain

We advise financial institutions on meeting regulatory capital requirements: Basel III solvency ratios, CET1, Tier 1, Tier 2, capital buffers, CRR/CRD, SREP and prudential supervision by the Bank of Spain, the CNMV and the ECB.

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Minimum CET1 ratio
4.5%
Total capital ratio
8%
Capital conservation buffer
2.5%
CRR Regulation
Reg. 575/2013

Every institution has different capital requirements

Bank, investment firm, payment institution, fund manager or fintech: the regulatory capital required depends on the type of institution, its size, complexity and risk profile.

Credit institution

Banks and savings banks

"Credit institutions must meet the CET1 (4.5%), Tier 1 (6%) and total capital (8%) ratios of CRR Art. 92, plus the capital buffers and the additional Pillar 2 requirements set through the SREP."

Investment firm

Investment firms

"Since June 2021, the new IFR/IFD prudential regime has set specific capital requirements for investment firms based on K-factors: risk to client, risk to market and risk to the firm itself."

Payment institution

Payment institutions and electronic money institutions

"Payment institutions need minimum initial capital of between €20,000 and €125,000 depending on their services, plus ongoing own funds calculated under PSD2 method A, B, C or D."

Fund manager

Collective investment scheme management companies

"Management companies of collective investment schemes must maintain minimum initial capital and additional own funds based on the volume of assets under management, under the UCITS Directive and the AIFMD."

What happens if you breach regulatory capital requirements?

Breaching capital requirements can have severe consequences: operating restrictions, supervisory intervention and, in extreme cases, resolution of the institution.

Restrictions on distributions: if the institution does not meet the combined buffer requirement (CBR), automatic restrictions apply to dividend payments, share buybacks and AT1 coupon payments.

Supervisory measures: the supervisor may impose additional Pillar 2 requirements (P2R and P2G), require capital plans, restrict activities or require the divestment of risky assets.

Resolution or intervention: if the institution reaches the point of non-viability (PONV), resolution mechanisms are triggered: bail-in, sale of assets, bridge bank or orderly liquidation.

CRR Art. 924.5% / 6% / 8%

Minimum CET1, Tier 1 and total capital ratios that every credit institution must maintain at all times on its risk-weighted assets (RWAs).

CRR IIISince January 2025

The Banking Package introduces the output floor (72.5% of the standardized approach), new risk weights and requirements for crypto-assets and ESG that may affect capital ratios.

SREPPillar 2

The supervisory review process may result in additional capital requirements (P2R) above the Pillar 1 minimums, based on the individual assessment of each institution.

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Regulatory capital: common questions

What is regulatory capital?

Regulatory capital is the minimum level of own funds that the supervisor requires financial institutions to hold to ensure their solvency and the stability of the financial system. It is calculated as a percentage of the institution’s risk-weighted assets (RWAs) and is structured in three tiers: CET1 (Common Equity Tier 1), AT1 (Additional Tier 1) and T2 (Tier 2).

The main legal framework is the Capital Requirements Regulation (CRR) (Regulation 575/2013) and the Capital Requirements Directive (CRD), which transpose the Basel III accords into European Union law.

What are the minimum capital ratios?

Minimum ratios (CRR Art. 92)

  • CET1: 4.5% of risk-weighted assets.
  • Tier 1 (CET1 + AT1): 6% of RWAs.
  • Total capital (Tier 1 + Tier 2): 8% of RWAs.
  • On top of these minimums come the capital buffers (conservation, countercyclical, systemic) and the Pillar 2 requirements set by the supervisor in the SREP.
What are capital buffers?

Capital buffers are additional requirements on top of the Pillar 1 minimums, and they must be met with CET1:

  • Capital conservation buffer (CCB): an additional 2.5% of CET1. Mandatory for all institutions.
  • Countercyclical capital buffer (CCyB): between 0% and 2.5%, set by the macroprudential authority according to the credit cycle.
  • Buffer for systemically important institutions (G-SII / O-SII): between 1% and 3.5% for systemic institutions.
  • Systemic risk buffer (SyRB): discretionary, for macroprudential or systemic risks.
What is the SREP?

The SREP (Supervisory Review and Evaluation Process) is the process through which the supervisor assesses the capital and liquidity adequacy of each institution individually. As a result of the SREP, the supervisor may impose:

  • P2R (Pillar 2 Requirement): mandatory additional capital requirements that must be met at all times.
  • P2G (Pillar 2 Guidance): guidance on the level of capital the institution should hold above its mandatory requirements.
What changes with CRR III and CRD VI?

The Banking Package (CRR III/CRD VI), adopted in 2024 and applicable since January 2025, brings the final Basel III reforms into Europe. The main changes include:

  • Output floor: limits, at 72.5%, the reduction in RWAs that internal models (IRB) can produce compared with the standardized approach.
  • A revised standardized approach for credit risk (SA-CR), with greater granularity and risk sensitivity.
  • A new treatment of operational risk with a single standardized approach.
  • Requirements on crypto-asset exposures and ESG risks.
What capital does an investment firm need?

Since June 2021, investment firms have been governed by the Investment Firms Regulation (IFR) (2019/2033) and the Investment Firms Directive (IFD) (2019/2034), which set up a dedicated prudential regime. The minimum capital depends on the type and size of the investment firm and is calculated as the highest of three amounts: the minimum initial capital, one quarter of the previous year’s fixed overheads and the requirement based on K-factors (risk to client, risk to market and risk to the firm).

What is the leverage ratio?

The leverage ratio is a measure that complements risk-based capital ratios. It is calculated as Tier 1 capital divided by the total exposure measure (on- and off-balance-sheet assets). CRR II set a mandatory minimum of 3% for all institutions. Global systemically important institutions (G-SIIs) must also meet an additional leverage ratio buffer.

What is MREL/TLAC?

MREL (Minimum Requirement for own funds and Eligible Liabilities) is the minimum requirement for own funds and eligible liabilities that institutions must maintain to ensure that, in a resolution, there is enough capacity to absorb losses and recapitalize. For global systemically important institutions (G-SIIs), the equivalent FSB standard is TLAC, which has been incorporated into the CRR as a Pillar 1 requirement.

Practical guide to regulatory capital

Regulatory capital is built on three pillars: minimum requirements, supervisory review and market discipline. These are the key concepts every institution must master.

Pillar 1

Minimum capital requirements

The CET1 (4.5%), Tier 1 (6%) and total capital (8%) ratios of CRR Art. 92 are the foundations of the system. They are calculated on risk-weighted assets for credit, market and operational risk.

Pillar 2

Supervisory review (SREP)

The supervisor individually assesses each institution’s capital and liquidity adequacy. It may impose additional requirements (P2R) and guidance (P2G) above the Pillar 1 minimums.

Pillar 3

Market discipline and disclosure

Institutions must publish information on their solvency, risk management and exposures (Pillar 3, COREP). Transparency allows the market to assess the institution’s soundness.

Structure of regulatory capital: from highest to lowest quality

  1. CET1 (Common Equity Tier 1): ordinary shares, reserves, retained earnings. The highest-quality capital, with the greatest loss-absorbing capacity.
  2. AT1 (Additional Tier 1): perpetual loss-absorbing instruments (CoCos, contingent convertible bonds). No maturity, with a conversion or write-down clause.
  3. T2 (Tier 2): subordinated debt with a minimum maturity of 5 years. Loss-absorbing capacity in resolution (gone concern).
  4. Capital conservation buffer (CCB): an additional 2.5% of CET1, mandatory for all institutions.
  5. Countercyclical buffer (CCyB): 0%–2.5% of CET1, varying with the credit cycle.
  6. Systemic buffer (G-SII/O-SII): 1%–3.5% for systemically important institutions.
  7. Pillar 2 Requirement (P2R): additional requirement set through the SREP, specific to each institution.
  8. Pillar 2 Guidance (P2G): non-binding guidance on the desirable level of capital.
  9. Leverage ratio: minimum 3% of Tier 1 over total exposure (non-risk-based backstop).
  10. MREL/TLAC: total loss-absorbing and recapitalization capacity in resolution.

If you need help with your capital planning, see our securities market services or request a free consultation.

Minimum capital for each financial license in Spain

How much initial capital the law requires to obtain each license, and in which article. This is the minimum for authorization: afterwards, each institution must maintain the own funds set by its prudential regime.

Minimum capital by type of financial license in Spain
LicenseMinimum capitalLegal basis
Bank (credit institution)€18,000,000Royal Decree 84/2015, Art. 4(b)
Financial credit establishment (EFC)€5,000,000Royal Decree 309/2020, Art. 10(b)
Electronic money institution (EMI)€350,000Law 21/2011, Art. 6
Payment institution€20,000 if it only provides money remittance; €50,000 with payment initiation; €125,000 with any of services (a) to (e)Royal Decree-law 19/2018, Art. 19(1)
Account information service provider (AISP)No minimum capital: registration with the Bank of Spain and professional indemnity insuranceRoyal Decree-law 19/2018, Arts. 15 and 16(2)
Broker-dealer (sociedad de valores)€750,000Royal Decree 813/2023, Art. 66(1)(a)
Securities broker (agencia de valores)€150,000; €75,000 if it cannot hold client funds or securitiesRoyal Decree 813/2023, Art. 66(1)(c) and (d)
Portfolio management company€75,000Royal Decree 813/2023, Art. 66(1)(e)
Financial advisory firm (EAF)€75,000Royal Decree 813/2023, Art. 66(1)(e)
National financial advisory firm (EAFN)Legal entity: €50,000 or professional liability insurance of €1,000,000 per claim and €1,500,000 per year. Individual: the insuranceRoyal Decree 813/2023, Art. 5(3)
Collective investment scheme management company (SGIIC)€125,000 plus 0.02% of the assets under management above €250 million, up to a total maximum of €10 millionRoyal Decree 1082/2012, Art. 100(1)(a)
Venture capital management company (SGEIC)€125,000 plus 0.02% of the portfolios above €250 million, up to a total maximum of €10 millionLaw 22/2014, Art. 48(a)
Crowdfunding platform (PSFP)The higher of: €25,000 or one quarter of the previous year’s fixed overheadsRegulation (EU) 2020/1503, Art. 11(1)
Crypto-asset service provider (CASP)€50,000, €125,000 or €150,000 depending on the services, or one quarter of fixed overheads if higherRegulation (EU) 2023/1114 (MiCA), Art. 67(1) and Annex IV

Data checked against the BOE consolidated texts and EUR-Lex on October 21, 2026. Based on data from the Agencia Estatal Boletín Oficial del Estado (Spanish Official State Gazette). The descriptions are summaries: the exact figure and its conditions are in each linked article.

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Payment services (Art. 1(2) of Royal Decree-law 19/2018)

Indicative result, calculated with the figures in the table. It does not take into account the requirements of each specific case. If you would like us to review it against your business plan, write to us.

CAPITAL ADEQUACY CONSOLE

Regulatory capital requirements dashboard by type of institution

Capital requirements vary significantly depending on the type of financial institution, its size and the applicable regulatory framework.

Capital framework by type of institution

Each financial institution is governed by a different prudential framework with specific capital requirements.

Requirement
Bank
Investment firm
Payment institution
Framework
CRR / CRDBasel III
IFR / IFDK-factors
PSD2Fixed capital
Min. CET1
4.5%+ buffers + P2R
VariableK-factors
N/AFixed capital
SREP
YesECB / Bank of Spain
YesCNMV
LimitedBank of Spain
Glossary

Key regulatory capital concepts

If you manage or advise a financial institution, these are the regulatory capital terms you need to master.

CET1Capital

Common Equity Tier 1

The highest tier of capital: ordinary shares, share premium, reserves and retained earnings. It is the highest-quality capital, with full loss-absorbing capacity.

CRR minimum: 4.5% of RWAs (Art. 92).
RWARisk

Risk-Weighted Assets

A measure of risk exposure that weights each asset according to its level of risk. It is the basis for calculating capital ratios. RWAs are calculated for credit, market and operational risk.

Known in Spanish as APR (activos ponderados por riesgo).
CRRLegislation

Capital Requirements Regulation

Regulation (EU) 575/2013, which sets the prudential capital, liquidity and leverage requirements for credit institutions and investment firms in the EU. Directly applicable.

Amended by CRR II (2019) and CRR III (2024).
CoCoAT1

Contingent Convertible Bond

A contingent convertible bond that converts into shares or is written down when the CET1 ratio falls below a predetermined threshold. An AT1 instrument with going-concern loss-absorbing capacity.

Trigger: typically CET1 < 5.125% or 7%.
ICAAPPillar 2

Internal Capital Adequacy Assessment Process

The internal process for assessing capital adequacy. The institution must show the supervisor that it has enough capital to cover all material risks, including those not covered by Pillar 1.

A key SREP document.
Output floorCRR III

Capital floor for internal models

Limits, at 72.5%, the reduction in RWAs that internal models (IRB) can produce compared with the standardized approach. It prevents internal models from underestimating risk and ensures a minimum level of capital.

Phased in from 2025 to 2030.
Bail-inResolution

Internal recapitalization

A resolution mechanism under which the institution’s creditors and shareholders absorb losses before taxpayers do. MREL/TLAC ensures there is enough capacity for the bail-in.

BRRD: defined order of priority among creditors.
K-factorIFR

Risk factor for investment firms

A risk metric specific to the IFR regime for investment firms. K-factors measure risk to client (RtC), risk to market (RtM) and risk to the firm (RtF), and determine capital requirements.

Applicable since June 2021 (Reg. 2019/2033).
COREPReporting

Common Reporting Framework

The common prudential reporting framework that institutions must periodically submit to the supervisor: own funds templates, solvency ratios, leverage, liquidity and large exposures.

Managed by the EBA.

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Regulatory capital: European and Spanish legal framework

Regulatory capital is the minimum level of own funds that financial institutions must hold to ensure their solvency and the stability of the financial system. Its legal framework originates in the Basel Accords of the Basel Committee on Banking Supervision (BCBS) and is transposed in Europe through the Capital Requirements Regulation (CRR) (575/2013) and the Capital Requirements Directive (CRD), which together form the prudential regulatory package for credit institutions and investment firms.

Basel III and its European transposition

After the 2008 financial crisis, the BCBS adopted the Basel III framework to strengthen capital requirements, introduce liquidity measures (LCR, NSFR) and establish a leverage ratio. In Europe, this framework was implemented through CRD IV/CRR (2013), updated by CRR II/CRD V (2019) and finally by the CRR III/CRD VI Banking Package (2024), which introduces the final Basel III reforms, applicable from January 2025.

Structure of regulatory capital

Regulatory capital is structured in three tiers of decreasing quality: CET1 (Common Equity Tier 1, made up of ordinary shares and reserves), AT1 (Additional Tier 1, such as CoCos) and T2 (Tier 2, such as subordinated debt). The minimum ratios set by Article 92 of the CRR are: CET1 of 4.5%, Tier 1 of 6% and total capital of 8% of risk-weighted assets.

Prudential supervision in Spain

In Spain, prudential supervision of credit institutions is the responsibility of the Bank of Spain and, for significant institutions, of the European Central Bank (ECB) within the Single Supervisory Mechanism (SSM). Investment firms (ESIs) are supervised by the CNMV. The SREP allows the supervisor to impose additional Pillar 2 capital requirements tailored to each institution’s individual risk profile.

Regulatory CapitalBasel IIICRR / CRDCET1SREPCRR IIIIFR / IFDEBA