Banking Law and Laundering of Proceeds of Crime in Spain

1. Introduction

Money laundering (blanqueo de capitales) is the process through which property derived from criminal activity is converted, transferred, concealed, used or otherwise dealt with so that its criminal origin is hidden or the proceeds can enter the legitimate economy.

Banks occupy a central position in Spain's anti-money-laundering framework because criminal proceeds frequently need access to financial services before they can be transferred, invested or apparently legitimized.

Spanish law therefore operates at two connected levels:

Preventive banking regulation – designed to stop banks and other regulated businesses from being used for laundering.

Criminal law – designed to punish persons who carry out laundering activities.

The principal preventive legislation is Law 10/2010 of 28 April on the Prevention of Money Laundering and Terrorist Financing.

The principal criminal provisions are contained in Articles 301–304 of the Spanish Criminal Code (Código Penal).

Spanish banks must therefore perform more than ordinary financial intermediation. They are legally required to participate in the detection and prevention of suspicious financial activity.

2. Meaning of Money Laundering

Law 10/2010 provides a broad concept of money laundering.

It covers activities including conversion or transfer of property, knowing that it originates from criminal activity, where the purpose is to conceal its unlawful origin or assist persons involved in the criminal conduct.

It also covers concealment or disguise concerning matters such as:

the nature of property;

its origin;

location;

movement;

ownership; or

associated rights.

The preventive definition therefore concentrates on the relationship between assets and underlying criminal activity.

3. Proceeds of Crime

The concept of criminal proceeds is broader than cash.

Potential criminal property can include:

money;

bank deposits;

securities;

real estate;

companies;

investment products;

financial rights;

valuable goods;

electronically held assets; and

other property representing the economic proceeds of crime.

The essential issue is the connection between the asset and criminal activity.

For example, criminally obtained money does not necessarily cease to represent criminal proceeds merely because it has been transferred through several accounts or converted into another form of property.

4. Banks as Obliged Entities

Article 2 of Law 10/2010 expressly treats credit institutions as obliged entities.

The preventive framework also extends to numerous other financial-sector participants, including certain:

investment firms;

payment institutions;

electronic-money institutions;

insurance businesses;

investment managers;

pension-fund managers;

currency-exchange businesses; and

financial intermediaries.

This is important because laundering schemes can move funds through several parts of the financial system rather than using only conventional bank accounts.

5. Customer Identification

One of the fundamental obligations is customer identification.

Banks must identify customers before establishing relevant business relationships or carrying out transactions falling within the statutory framework.

The purpose is straightforward:

Banks should know who is actually using their financial services.

Identification measures help prevent anonymous use of financial infrastructure for criminal purposes.

A bank therefore needs procedures for verifying customer identity through reliable documentation or other legally accepted methods.

6. Beneficial Ownership

Identifying the person whose name appears on an account may not be enough.

Banks must also address beneficial ownership.

Consider the following structure:

Individual A → Company B → Company C → Bank Account

Company C may formally hold the account.

However, Individual A might ultimately control the structure.

AML controls therefore seek to identify the natural person or persons who ultimately own or control the customer where the beneficial-ownership rules apply.

This is particularly important for complex corporate structures.

7. Purpose and Nature of the Business Relationship

Banks also need information concerning the intended nature and purpose of relevant customer relationships.

A bank may need to understand:

the customer's business;

expected account activity;

anticipated transaction volumes;

sources of income;

geographical connections; and

the purpose of financial products being used.

This creates a baseline against which unusual activity can later be assessed.

8. Ongoing Monitoring

AML compliance does not end after an account has been opened.

Banks must conduct ongoing monitoring.

Suppose a customer normally receives modest domestic salary payments.

The account suddenly begins receiving large international transfers unrelated to the customer's known activities.

That change may require additional examination.

Banks therefore compare actual account behavior with information known about the customer and the expected nature of the relationship.

9. Risk-Based Approach

Spanish AML law follows a risk-based approach.

Not every customer creates exactly the same laundering risk.

Relevant risk factors can include:

customer characteristics;

geographical exposure;

products;

services;

delivery channels;

transaction patterns; and

business relationships.

Higher-risk circumstances can justify stronger controls.

The objective is not automatically to treat particular customers as criminals. It is to allocate preventive controls according to objectively assessed financial-crime risks.

10. Enhanced Due Diligence

Certain circumstances require enhanced scrutiny.

Enhanced measures can involve obtaining additional information concerning:

the customer;

beneficial owner;

source of funds;

source of wealth;

reasons for transactions; and

intended business relationship.

Banks may also apply closer ongoing monitoring.

Enhanced due diligence is particularly important where circumstances create higher-than-normal AML risks.

11. Politically Exposed Persons

Spanish AML legislation contains special rules concerning politically exposed persons (PEPs).

The reason is not that political status establishes criminality.

Rather, particular public functions may create heightened exposure to corruption or misuse of public resources.

Banks therefore apply additional risk-management measures where the statutory PEP rules apply.

The approach remains preventive and risk-based.

12. Examination of Suspicious Operations

When a transaction or attempted transaction presents circumstances suggesting a possible connection with money laundering, the institution must conduct the examination required by AML legislation.

Possible warning circumstances can include:

transactions inconsistent with known business activity;

unexplained movement of substantial amounts;

unnecessarily complicated ownership structures;

unusual use of several accounts;

transactions lacking an apparent legitimate economic purpose; or

financial activity inconsistent with the customer's known profile.

A warning sign does not automatically prove criminal conduct.

It indicates that additional examination may be necessary.

13. SEPBLAC

Spain's principal financial-intelligence authority in this field is SEPBLAC – Servicio Ejecutivo de la Comisión de Prevención del Blanqueo de Capitales e Infracciones Monetarias.

SEPBLAC receives and analyses suspicious-operation communications and performs important supervisory and financial-intelligence functions.

Banks must communicate qualifying suspicious operations in accordance with Law 10/2010.

The bank's function is not to conduct a criminal trial.

Instead, it detects, examines and reports circumstances meeting the statutory requirements, while competent public authorities determine whether further investigation or prosecution is justified.

14. Prohibition on Tipping Off

An important element of AML law is the restriction on informing customers about certain AML reports or examinations.

The purpose is to prevent a suspected offender from being warned in a manner that could undermine an investigation.

This creates an unusual banking situation.

Ordinarily, banks try to explain decisions to customers.

AML legislation can restrict the information that may be disclosed where informing the customer would reveal protected AML action.

15. Record Keeping

Financial investigations frequently concern transactions occurring years earlier.

Banks must therefore retain records required under AML legislation.

Relevant records can include information concerning:

customer identification;

beneficial ownership;

account relationships;

transactions;

due-diligence measures; and

AML examinations.

Records can later assist authorities in reconstructing the movement of suspected criminal proceeds.

16. Internal Controls

Banks need internal AML governance arrangements.

A large institution will ordinarily require systems covering:

customer due diligence;

beneficial-ownership identification;

transaction monitoring;

suspicious-operation analysis;

internal escalation;

reporting;

record keeping;

staff training;

independent control functions; and

periodic assessment of AML risks.

AML compliance is therefore a governance responsibility rather than merely a task for individual branch employees.

17. Correspondent Banking

Correspondent banking creates particular cross-border risks.

One financial institution may provide banking services to another institution, potentially creating indirect access to the financial system for customers whom the correspondent bank does not directly know.

Spanish law consequently requires enhanced measures in relevant correspondent relationships.

The framework also restricts relationships involving shell banks.

This reduces the possibility that opaque foreign banking structures can obtain indirect access to Spain's financial infrastructure.

18. Criminal Offence under Article 301

Preventive AML regulation should be distinguished from the criminal offence.

Article 301 of the Spanish Criminal Code deals with laundering conduct involving assets originating from criminal activity.

Criminal liability depends on the statutory elements of the offence and the defendant's conduct and mental state.

Spanish law also recognizes forms of laundering involving serious negligence.

This is particularly relevant to professionals because deliberate participation is not the only issue considered by the criminal framework.

19. Self-Laundering

Spanish criminal law can also cover self-laundering (autoblanqueo).

This means that, in appropriate circumstances, the person involved in generating criminal proceeds can also incur liability for subsequent laundering conduct involving those proceeds.

However, courts distinguish genuine laundering activity from conduct merely inherent in committing or enjoying the proceeds of the underlying offence.

The distinction prevents the laundering offence from automatically absorbing every act involving property following a predicate crime.

20. Predicate Offence

The underlying criminal activity generating the assets is commonly described as the predicate offence.

Examples can include proceeds generated by crimes such as:

fraud;

corruption;

tax offences where the criminal requirements are satisfied;

embezzlement;

organized criminal activity; and

other qualifying criminal conduct.

Importantly, Spanish Supreme Court jurisprudence establishes that a separate prior conviction for the predicate offence is not always necessary before laundering can be proved.

The criminal origin of the assets may instead be established through evidence in the laundering proceedings.

21. Circumstantial Evidence

Money laundering is frequently difficult to prove through direct evidence.

The Spanish Supreme Court has therefore repeatedly recognized the importance of circumstantial evidence (prueba indiciaria).

Relevant circumstances can include:

unusually large amounts of money;

unexplained increases in wealth;

absence of legitimate business explaining the funds;

connections with criminal activities;

unusual financial transactions; and

complex transactions lacking reasonable economic explanation.

No single factor necessarily proves laundering.

The evidence must be assessed together and satisfy criminal standards of proof.

22. Case Law

Case 1 – STS 755/1997, 23 May 1997

This is one of the foundational Spanish Supreme Court authorities concerning proof of money laundering.

The Court developed principles concerning the use of circumstantial evidence where direct evidence of the laundering process is unavailable.

Principle

Courts can infer criminal origin and knowledge from a sufficiently strong combination of proven circumstances.

Banking Importance

Banks similarly rely on transaction patterns and risk indicators at the preventive stage, although regulatory suspicion is fundamentally different from proof required for criminal conviction.

Case 2 – STS 356/1998, 15 April 1998

The Supreme Court continued developing its approach to circumstantial evidence in laundering cases.

Principle

Laundering may be established through a coherent body of indirect evidence where the circumstances reasonably demonstrate the criminal origin of property and the required connection of the defendant.

Banking Importance

Financial records can become particularly important because they establish transaction sequences, amounts and relationships between participants.

Case 3 – STS 774/2001, 9 May 2001

This decision forms part of the Supreme Court's established jurisprudence concerning proof of money laundering.

Principle

Courts may examine the totality of financial circumstances rather than demanding direct evidence identifying every stage through which criminal money travelled.

Banking Importance

Account records, transfers and unexplained financial movements can form part of the evidential picture.

Case 4 – STS 801/2010, 23 September 2010

This is an important Supreme Court authority summarizing the evidential approach to money laundering.

The Court reiterated that prior conviction for the predicate offence is not indispensable.

It also emphasized the importance of circumstantial evidence.

Frequently identified indicators include:

substantial amounts of money;

links with unlawful activities;

unusual or disproportionate increases in wealth; and

absence of legitimate commercial explanations.

Banking Importance

This case clearly demonstrates why transaction monitoring and financial records can become crucial in laundering investigations.

Case 5 – STS 1283/2011, 29 November 2011

The Supreme Court again examined the evidential difficulties characteristic of money laundering.

Principle

Direct evidence can be difficult to obtain because laundering is specifically designed to disguise the origin and movement of assets.

Consequently, properly established circumstantial evidence is legally capable of supporting a finding of laundering.

Banking Importance

The decision illustrates the evidential value of records showing financial movements, account relationships and unexplained transactions.

Case 6 – STS of 24 September 2013, Cassation No. 1988/2012

The Supreme Court discussed the commonly recognized stages of money laundering.

The analysis reflected the traditional distinction between stages generally described as:

placement → layering → integration.

Principle

Laundering can involve multiple transactions designed progressively to distance property from its criminal origin.

Banking Importance

Financial institutions can appear at several points in that chain, making transaction monitoring particularly important.

Case 7 – STS of 7 February 2014, Cassation No. 933/2013

The Supreme Court summarized established evidential principles relating to money laundering.

It reaffirmed that a prior conviction for the predicate offence is unnecessary and that circumstantial evidence may be used.

Relevant indicators included unusual increases in wealth, unexplained money movements and links with criminal activity.

Banking Importance

The case reinforces the importance of analysing transactions in their broader economic context rather than viewing every transfer in isolation.

Case 8 – STS 970/2016, 21 December 2016

This Supreme Court judgment addressed important questions concerning the mental element of money laundering, including eventual intent (dolo eventual) and laundering through serious negligence (imprudencia grave).

Principle

Spanish criminal law distinguishes intentional laundering from cases in which the statutory requirements for seriously negligent laundering are established.

Banking Importance

Professionals dealing with financial transactions cannot treat obvious warning circumstances as irrelevant. At the same time, criminal negligence requires proof satisfying the elements of the criminal offence; ordinary administrative compliance failures do not automatically constitute criminal laundering.

23. Lessons from the Case Law

The Spanish Supreme Court jurisprudence establishes several important propositions.

First, a prior conviction for the predicate crime is not invariably required.

Second, circumstantial evidence can prove laundering.

Third, unusual wealth alone should be considered within the complete evidential context.

Fourth, connections between financial activity and criminal conduct can be highly relevant.

Fifth, the courts can examine the economic logic of transactions.

Sixth, intentional and seriously negligent forms of laundering must be distinguished.

Seventh, financial records can provide critical evidence.

24. Preventive Suspicion vs Criminal Proof

This distinction is particularly important.

A bank does not need to prove beyond reasonable doubt that its customer committed money laundering before carrying out the preventive obligations imposed by Law 10/2010.

AML regulation operates preventively.

Criminal conviction is different.

For conviction, prosecutors must prove the elements of the criminal offence according to criminal evidential standards.

Therefore:

Suspicious transaction ≠ proven money laundering.

A suspicious-operation report is an intelligence and preventive mechanism, not a declaration that the customer is guilty.

25. Bank Employee Liability

Suppose a bank employee encounters highly unusual financial activity.

Several different levels of responsibility could potentially arise depending on the facts.

Compliance Issue

The institution may have failed to follow AML procedures.

Administrative Issue

A breach of Law 10/2010 may potentially lead to administrative sanctions where statutory requirements are satisfied.

Criminal Issue

If a person knowingly participates in laundering, or the requirements for the relevant negligent criminal offence are established, criminal liability can arise.

These categories should not be confused.

A procedural compliance error does not automatically constitute the criminal offence of money laundering.

26. Sanctions for Banks

Law 10/2010 establishes an administrative sanctions framework.

Breaches can be classified according to statutory categories and seriousness.

Potential consequences under the applicable framework can include:

financial penalties;

public or private reprimands;

measures involving responsible managers; and

other consequences provided by legislation.

Institutions therefore have substantial incentives to maintain effective AML systems.

27. Technology and AML

Modern Spanish banks increasingly use technology to detect suspicious activity.

Systems can analyse:

transaction frequency;

transaction amounts;

geographical patterns;

account relationships;

deviations from customer profiles; and

unusual financial behaviour.

However, automated alerts should not automatically be treated as proof of crime.

An effective system combines:

technology + risk analysis + trained personnel + appropriate investigation + regulatory reporting.

28. Cross-Border Transactions

Spain is deeply integrated into European and international financial markets.

A transaction may therefore involve:

Customer in State A → Spanish bank → correspondent bank → beneficiary in State B.

Cross-border activity can create additional AML risks concerning identification, beneficial ownership, sanctions, correspondent banking and high-risk jurisdictions.

Spanish banks must therefore consider both domestic AML requirements and the applicable European and international regulatory framework.

29. Example

Suppose a customer operates a small company whose ordinary monthly account activity is approximately €30,000.

The account suddenly receives several million euros through transactions that appear inconsistent with the company's known business.

The bank should not simply conclude:

"The customer is guilty of money laundering."

Instead, the preventive framework may require the institution to examine the transactions, update customer information where appropriate, identify beneficial ownership, assess the source and purpose of the funds, apply enhanced measures where required and communicate suspicious activity to SEPBLAC where the statutory reporting conditions are satisfied.

Whether a criminal offence actually occurred is ultimately a separate question for criminal investigation and adjudication.

This distinction protects both:

financial-system integrity and the presumption of innocence.

30. Importance for Banking Governance

Effective AML governance requires involvement from several parts of a bank.

Board and Senior Management

They establish appropriate governance and risk frameworks.

Compliance Function

It supervises AML policies and regulatory requirements.

Customer-Facing Functions

They collect customer and transaction information.

Monitoring Teams

They identify unusual financial activity.

Internal Audit

It independently examines whether controls operate effectively.

AML compliance should therefore be integrated throughout the institution rather than isolated within one department.

Conclusion

The laundering of proceeds of crime is a major concern of Spanish banking law because banks can be used to move, conceal or integrate property generated by criminal activity.

Spain addresses the problem through two complementary frameworks.

Law 10/2010 creates a preventive regime requiring banks and other obliged entities to identify customers and beneficial owners, understand business relationships, monitor transactions, examine suspicious activity, maintain records, apply risk-based controls and communicate qualifying suspicious operations.

Articles 301–304 of the Criminal Code provide the criminal-law framework for money laundering.

Spanish Supreme Court authorities including STS 755/1997, STS 356/1998, STS 774/2001, STS 801/2010, STS 1283/2011, the decisions of 24 September 2013 and 7 February 2014, and STS 970/2016 demonstrate the importance of circumstantial evidence, the absence of an absolute requirement for a prior predicate-offence conviction, analysis of unexplained financial activity, and the distinction between intentional and seriously negligent laundering.

The central banking-law principle is therefore:

Banks are not criminal courts, but they are legally required to prevent their services from being used to conceal or integrate proceeds of crime. Suspicious financial activity triggers preventive examination and, where required, reporting; criminal guilt remains a separate matter requiring proof through the criminal justice system.