EU Financial Control, Anti-Fraud Mechanisms, and Protection of the Union’s Financial Interests

EU Financial Control, Anti-Fraud Mechanisms, and Protection of the Union’s Financial Interests

1. Introduction: Protecting the Financial Integrity of the European Union

The European Union’s capacity to finance common policies depends not only on the availability of financial resources but also on the legal mechanisms ensuring that those resources are collected, administered, and spent properly. The Union budget finances agricultural support, regional development, research, infrastructure, education, external cooperation, and numerous other activities. Its effective operation therefore requires a system capable of preventing financial misconduct, detecting irregularities, investigating suspected fraud, recovering improperly used funds, and prosecuting criminal offences.

The protection of the Union’s financial interests is a constitutional and institutional responsibility shared between the European Union and its Member States. It extends beyond the prevention of fraudulent expenditure. It also covers the protection of EU revenue, the integrity of procurement procedures, conflicts of interest, corruption, misuse of public resources, and criminal conduct affecting the financial interests of the Union.

The legal framework is built around several complementary institutions and mechanisms:

• The European Commission, which implements the EU budget and supervises financial management.
• The European Court of Auditors (ECA), which provides independent external audit.
• The European Anti-Fraud Office (OLAF), which conducts administrative investigations into fraud and serious irregularities.
• The European Public Prosecutor’s Office (EPPO), which investigates and prosecutes criminal offences affecting the Union’s financial interests in participating Member States.
• National authorities, courts, audit institutions, and law-enforcement bodies, which carry out essential functions in the implementation and enforcement of EU financial rules.

These bodies do not exercise identical powers. Their responsibilities are deliberately differentiated. An audit identifies weaknesses or errors in financial management; an administrative investigation establishes facts concerning suspected misconduct; a criminal investigation seeks evidence of offences; and a court determines criminal responsibility according to the applicable procedural and substantive law.

The principal objective is to protect the Union’s financial resources while ensuring that investigations, administrative decisions, and criminal proceedings respect legality, proportionality, fundamental rights, and effective judicial protection.

2. Legal Foundations of the Protection of the Union’s Financial Interests

The protection of the EU budget is grounded primarily in Articles 310–325 of the Treaty on the Functioning of the European Union (TFEU).

Article 310 establishes the general principles governing the Union budget, including the requirements of financial discipline, balance, and sound financial management.

Article 317 makes the European Commission responsible for implementing the budget, in cooperation with Member States. It also requires the Commission to ensure that expenditure is implemented in accordance with the principles of sound financial management.

Article 318 concerns the presentation of accounts and financial information, while Article 319 establishes the discharge procedure through which the European Parliament examines the Commission’s implementation of the budget.

Article 325 is particularly important. It requires the Union and Member States to counter fraud and any other illegal activities affecting the Union’s financial interests through measures that act as a deterrent and provide effective protection.

The provision establishes an obligation of cooperation between the Union and Member States. National authorities must take measures to protect EU financial interests comparable to those used to protect their own financial interests. The Union and Member States must also coordinate their action against fraud.

Article 325 therefore provides the constitutional foundation for the Union’s anti-fraud architecture. It recognises that protecting the EU budget cannot be achieved exclusively through centralised European institutions. Since much of the budget is implemented by national and regional authorities, effective protection requires cooperation across several levels of government.

Other Treaty provisions are also relevant. Article 4(3) TEU establishes the principle of sincere cooperation, requiring Member States to take appropriate measures to fulfil their obligations under EU law. Article 2 TEU identifies the rule of law as a foundational value of the Union, while Article 19 TEU requires effective judicial protection in fields covered by EU law.

The legal framework is developed through secondary legislation, particularly:

• Regulation (EU, Euratom) 2024/2509, the Financial Regulation.
• Regulation (EU, Euratom) No 883/2013, governing OLAF investigations, as amended.
• Council Regulation (EU) 2017/1939, establishing EPPO.
• Directive (EU) 2017/1371, commonly known as the PIF Directive.
• Regulation (EU) 2017/1939 and the applicable national procedural and criminal laws governing EPPO investigations and prosecutions.
• Regulation (EU) 2020/2092, establishing the rule-of-law conditionality mechanism for the protection of the Union budget.

Together, these instruments create a system of preventive financial control, administrative investigation, criminal enforcement, and judicial accountability.

3. The Concept of the Union’s Financial Interests

The expression financial interests of the Union refers to the revenue, expenditure, assets, and liabilities covered by the Union budget and other relevant financial arrangements administered by or on behalf of the Union.

The concept is broader than the protection of money already paid to beneficiaries.

It includes the protection of revenue that should be collected, such as customs duties and certain VAT-related resources. It also covers expenditure financed directly by the EU budget, expenditure implemented through national authorities, and financial resources administered through EU programmes and instruments.

The protection of financial interests therefore involves two principal dimensions.

Protection of expenditure concerns ensuring that EU funds are awarded, managed, and used lawfully. It includes preventing false applications, fictitious beneficiaries, inflated project costs, fraudulent procurement, conflicts of interest, and the diversion of grants or subsidies.

Protection of revenue concerns ensuring that amounts legally due to the Union are properly established and collected. Examples include customs fraud, smuggling, undervaluation of imported goods, and serious cross-border VAT fraud affecting the Union’s financial interests.

The distinction matters because fraudulent conduct can damage the EU budget in different ways. A company may obtain a grant through false declarations, while another may avoid customs duties through deliberate misrepresentation of imported goods. Both situations can affect the Union’s financial interests, but they require different investigative methods and administrative responses.

The PIF framework also recognises that offences may involve corruption, misappropriation, money laundering, or other conduct connected with fraudulent activities affecting EU resources.

The legal protection of the Union’s financial interests is therefore not confined to the recovery of money. It also protects the integrity of the financial administration through which the Union carries out its policies.

4. The Financial Regulation: Prevention and Financial Control

Regulation (EU, Euratom) 2024/2509 is the principal legal instrument governing the financial rules applicable to the general budget of the Union.

It entered into force on 30 September 2024 and consolidated the financial rules previously contained in Regulation 2018/1046, together with subsequent amendments.

The Financial Regulation establishes procedures for budget implementation, grants, procurement, financial instruments, accounting, audit, recovery, and the protection of the Union’s financial interests.

Its importance is preventive as well as corrective. It establishes safeguards intended to reduce the likelihood of fraud, irregularities, and misuse before public money is disbursed.

4.1 Internal Control Systems

Financial management requires an adequate system of internal controls.

These controls include procedures for authorising expenditure, verifying eligibility, checking supporting documents, monitoring payments, and identifying irregularities.

The Commission and other EU institutions must ensure that financial operations are supported by appropriate documentation and that the persons responsible for authorising and validating expenditure act within their legal powers.

Control systems must be proportionate to the nature and value of the financial operation, while providing adequate protection against risks.

The purpose is not to create administrative procedures for their own sake. It is to ensure that expenditure is authorised, justified, traceable, and capable of independent verification.

4.2 Prevention of Conflicts of Interest

Conflicts of interest are a significant risk in the administration of public funds.

A person responsible for selecting beneficiaries, awarding contracts, or verifying expenditure may have a personal, professional, financial, or other interest capable of compromising impartiality.

Article 61 of the Financial Regulation establishes rules concerning conflicts of interest for financial actors and other persons involved in budget implementation.

The relevant persons must take appropriate measures to prevent conflicts of interest and address situations that may objectively be perceived as compromising their impartiality.

A conflict of interest does not automatically establish fraud or criminal corruption. It may nevertheless constitute a serious breach of financial obligations and may lead to exclusion from decision-making, administrative measures, financial corrections, or disciplinary consequences.

4.3 Procurement and Grant Management

Public procurement and grant procedures are particularly vulnerable to financial misconduct.

A procurement process may be manipulated through restrictive specifications, undisclosed relationships between bidders and decision-makers, bid-rigging, inflated prices, or the deliberate exclusion of competing suppliers.

Grant applications may involve false declarations, fabricated supporting documents, fictitious costs, or the concealment of ineligible activities.

The Financial Regulation therefore establishes requirements concerning transparency, equal treatment, competition, eligibility, documentation, and verification.

Financial management must also be supported by appropriate audit trails. The authorities responsible for implementation must be able to demonstrate why a beneficiary was selected, how the amount of funding was calculated, and whether the expenditure satisfied the applicable conditions.

4.4 Recovery and Financial Corrections

Where EU money has been paid without a valid legal basis or in breach of the applicable conditions, the responsible authorities may be required to recover the amount concerned.

Recovery is an essential part of budgetary protection, but it must be distinguished from criminal punishment.

A beneficiary may be required to repay a grant because expenditure was ineligible, even where criminal intent has not been established.

Financial corrections may also be applied where weaknesses in management and control systems have affected the legality or regularity of expenditure.

The Commission may interrupt payments, suspend implementation, impose corrections, or pursue recovery in accordance with the applicable legal instruments.

The Financial Regulation thus provides the general framework within which financial responsibility is established and enforced.

The European Commission maintains the current consolidated EU Financial Regulation and explanatory materials concerning its implementation.

5. Irregularities, Fraud, and Criminal Offences: Important Legal Distinctions

The protection of the Union’s financial interests requires precise distinctions between different forms of misconduct.

An irregularity generally refers to an infringement of EU law or applicable national law relating to its implementation that has, or would have, the effect of prejudicing the Union budget through an unjustified item of expenditure or a reduction in revenue.

An irregularity may arise from an administrative error, a breach of procurement rules, an incorrect declaration, or failure to comply with funding conditions.

Not every irregularity is fraud. Fraud generally involves intentional deception or other deliberate conduct satisfying the relevant legal definition.

A suspected fraud is a situation in which information or evidence indicates that fraudulent conduct may have occurred. It is not a final determination of criminal responsibility.

A criminal offence is established only when the elements prescribed by applicable criminal law are proved through the appropriate judicial process.

This distinction is particularly important in EU financial control because different institutions operate at different evidentiary and procedural stages.

For example, an audit may identify an expenditure error. The competent authority may then recover the amount. If evidence suggests intentional falsification, OLAF may investigate administrative aspects or EPPO may investigate a criminal offence within its jurisdiction.

The administrative recovery of funds does not itself establish criminal guilt. Equally, the absence of a criminal conviction does not necessarily prevent recovery where the legal conditions for repayment are independently satisfied.

6. The PIF Directive: Harmonising Criminal Law Protection

Directive (EU) 2017/1371 is commonly known as the Protection of the Union’s Financial Interests Directive, or the PIF Directive.

It seeks to strengthen the protection of the EU budget through criminal law by requiring Member States to establish common definitions of specified offences and provide effective criminal penalties.

Before its adoption, differences between national criminal laws created difficulties in addressing cross-border fraud and ensuring consistent protection of the Union’s financial interests.

The directive establishes minimum rules concerning criminal offences affecting the Union’s financial interests. It does not create a complete European criminal code or replace national criminal law.

Member States remain responsible for implementing the directive through their domestic legislation, including the determination of applicable procedures, courts, and penalties within the limits established by EU law.

6.1 Fraud Affecting Expenditure

The directive covers fraudulent conduct affecting expenditure financed by the Union budget.

Examples include:

• Using or presenting false, incorrect, or incomplete statements or documents to obtain or retain EU funds.
• Concealing information in breach of a specific obligation, with the same effect.
• Misapplying funds for purposes other than those for which they were originally granted.

The relevant conduct must satisfy the elements of the offence under the directive and the applicable national implementing law.

The distinction between an incorrect declaration and criminal fraud depends on the circumstances, including the required mental element and the nature of the conduct.

6.2 Fraud Affecting Revenue

The PIF Directive also covers fraudulent conduct affecting revenue arising from the Union’s financial interests.

This includes the use of false or incomplete statements or documents to reduce unlawfully the resources payable to the EU budget, as well as certain forms of unlawful non-disclosure.

Customs fraud is particularly relevant because customs duties collected on imports from third countries constitute traditional own resources of the Union.

6.3 Serious Cross-Border VAT Fraud

The directive includes serious offences involving cross-border VAT fraud.

For the relevant VAT offences to fall within the directive’s scope, they must involve intentional conduct connected with the territory of two or more Member States and total damage of at least €10 million.

This threshold concerns the application of the specific PIF framework to serious cross-border VAT fraud. It does not mean that smaller VAT fraud is lawful or exempt from national criminal enforcement.

The provision reflects the particular complexity and financial impact of large-scale VAT fraud schemes operating through several jurisdictions.

6.4 Corruption and Misappropriation

The directive also addresses active and passive corruption involving public officials where the conduct damages or is likely to damage the Union’s financial interests.

Active corruption involves promising, offering, or giving an undue advantage to a public official in connection with the performance of official duties.

Passive corruption concerns the request or receipt of an undue advantage, or the acceptance of an offer or promise of such an advantage.

Misappropriation by public officials is also covered where funds or assets entrusted to them are intentionally committed or disbursed, appropriated, or used for purposes contrary to their intended purpose and in a manner prejudicing the Union’s financial interests.

6.5 Money Laundering and Related Conduct

The PIF Directive includes money laundering where it involves property derived from criminal offences covered by the directive.

This is important because fraud affecting EU funds may form part of wider criminal networks involving shell companies, fictitious transactions, cross-border transfers, and attempts to conceal the origin of proceeds.

The directive also requires Member States to establish appropriate rules on criminal liability for legal persons and to provide effective, proportionate, and dissuasive penalties.

6.6 Penalties and Limitation Periods

The PIF Directive requires Member States to establish criminal penalties for the offences within its scope.

It also provides minimum requirements concerning limitation periods, intended to ensure that investigations and prosecutions can be conducted effectively.

For particularly serious offences involving damage or advantage exceeding €100,000, the directive requires maximum penalties of at least four years of imprisonment.

The precise penalty imposed in an individual case remains governed by the applicable national criminal law, subject to the directive’s requirements.

The directive therefore harmonises essential elements of criminal protection without fully unifying the criminal justice systems of the Member States.

Official text: Directive (EU) 2017/1371 – Protection of the Union’s Financial Interests.

7. OLAF: Administrative Investigations and Anti-Fraud Policy

The European Anti-Fraud Office, commonly known as OLAF, was established in 1999 to strengthen the Union’s capacity to investigate fraud and serious misconduct affecting its financial interests.

Its current legal framework is principally Regulation (EU, Euratom) No 883/2013, as amended, including by Regulation (EU, Euratom) 2020/2223.

OLAF is part of the European Commission’s institutional structure but exercises its investigative functions independently under the applicable legal framework.

Its mandate includes investigating:

• Fraud affecting the EU budget.
• Corruption and serious misconduct involving EU financial interests.
• Irregularities affecting expenditure and revenue.
• Serious misconduct by EU officials and members of EU institutions and bodies.
• Certain customs and revenue-related offences.
• Circumstances requiring administrative recommendations to protect EU financial interests.

OLAF’s work is administrative rather than criminal prosecution. It does not act as a general European criminal court or prosecutor.

7.1 Opening and Conducting Investigations

OLAF may receive information from institutions, national authorities, private individuals, companies, and other sources.

It assesses the information and determines whether the legal conditions for an investigation are satisfied.

Investigations may involve examination of documents, interviews, on-the-spot checks, inspections, and cooperation with national authorities.

The precise powers available depend on the legal framework governing the investigation and the nature of the entity concerned.

OLAF may investigate within EU institutions and bodies and may conduct external investigations involving economic operators, beneficiaries, contractors, and other persons connected with EU funds.

Its investigations must respect procedural safeguards and the rights of persons concerned.

7.2 Investigative Reports and Recommendations

When an investigation is concluded, OLAF prepares a final report setting out its findings and may issue recommendations to the competent authorities.

These recommendations may be:

Financial recommendations, calling for recovery of funds improperly spent or measures to protect revenue.

Judicial recommendations, inviting competent national judicial authorities to consider criminal proceedings where the evidence indicates possible criminal conduct.

Disciplinary recommendations, concerning serious misconduct by EU staff or members of EU institutions and bodies.

Administrative recommendations, suggesting improvements to procedures, management systems, or controls, including measures concerning exclusion from future funding where the applicable conditions are satisfied.

OLAF does not itself impose every recommended measure. The competent national or EU authority decides what action is legally appropriate.

7.3 OLAF’s Relationship with EPPO

The creation of EPPO changed the institutional landscape.

Where evidence indicates a criminal offence falling within EPPO’s competence in a participating Member State, the matter must be handled in accordance with the cooperation and referral arrangements established by EU law.

OLAF may conduct complementary administrative investigations where appropriate, while EPPO conducts the criminal investigation and prosecution.

This division allows administrative and criminal investigations to address different aspects of the same factual situation without treating the two processes as interchangeable.

7.4 OLAF’s Investigative Performance in 2025

OLAF’s 2025 annual report illustrates the scale of its work.

During 2025, OLAF:

• Opened 254 new investigations.
• Concluded 209 investigations.
• Issued 216 recommendations.
• Recommended the recovery of €597 million.
• Recommended preventing €18.1 million from being unduly spent.

These figures demonstrate the scale of OLAF’s administrative activity, but they must be interpreted carefully.

The €597 million figure represents amounts recommended for recovery, not necessarily money already returned to the EU budget during 2025. Recovery procedures may continue for several years and depend on decisions by the competent authorities.

OLAF also reported that its work helped safeguard €572.3 million in revenue and estimated an impact of €957 million in relation to customs duties and VAT on imports in 2025.

The figures demonstrate that the protection of the Union’s financial interests concerns both expenditure and revenue. OLAF Annual Report 2025.

8. The European Public Prosecutor’s Office: Criminal Investigation and Prosecution

The European Public Prosecutor’s Office is one of the most significant developments in EU criminal law cooperation.

It was established under Council Regulation (EU) 2017/1939 and became operational on 1 June 2021.

Unlike OLAF, EPPO is an independent prosecution office with the power to investigate and prosecute criminal offences affecting the Union’s financial interests.

Its legal foundation is Article 86 TFEU, which permits the Council to establish a European Public Prosecutor’s Office from Eurojust to combat crimes affecting the Union’s financial interests.

EPPO operates through a central office in Luxembourg and European Delegated Prosecutors located in participating Member States.

8.1 Central Structure

The central office coordinates the work of the European Delegated Prosecutors and supports investigations involving several jurisdictions.

It includes the European Chief Prosecutor, European Prosecutors, and the College, which is responsible for supervising the general activities of the Office and ensuring consistency in its work.

Permanent Chambers supervise and direct investigations and prosecutions in accordance with the EPPO Regulation.

The central structure is designed to identify connections between criminal activities taking place in different Member States and to coordinate proceedings that might otherwise be fragmented across national jurisdictions.

8.2 European Delegated Prosecutors

European Delegated Prosecutors conduct investigations and prosecutions in the participating Member States.

They operate within the national judicial systems while exercising responsibilities under the EPPO Regulation.

This hybrid structure combines central coordination with national procedural and judicial arrangements.

It allows EPPO to conduct cross-border investigations without creating an entirely separate European criminal court system.

8.3 EPPO’s Material Competence

EPPO is competent to investigate and prosecute criminal offences affecting the Union’s financial interests within the scope of the PIF Directive and the EPPO Regulation.

Its competence includes serious forms of fraud affecting EU expenditure and revenue, corruption, misappropriation, and related offences.

It also covers serious cross-border VAT fraud meeting the threshold and territorial conditions established by the PIF Directive.

The EPPO Regulation provides additional rules concerning ancillary offences and situations in which criminal conduct is inseparably linked to a PIF offence.

EPPO does not have general jurisdiction over all financial crime, corruption, or tax offences in the European Union. Its competence is limited by the Treaty, the PIF Directive, and its founding regulation.

8.4 Investigative Powers and Judicial Oversight

EPPO conducts investigations through European Delegated Prosecutors, who may use investigative measures available under the applicable national law and the EPPO Regulation.

Depending on the case and national legal requirements, these may include searches, seizure of evidence, freezing of assets, questioning of suspects, obtaining financial records, and other investigative measures.

Judicial authorisation or review may be required for particular measures.

The EPPO Regulation does not eliminate national procedural safeguards. Investigations and prosecutions must respect the rights of suspects and accused persons, including the presumption of innocence, the right to legal assistance, and the right to an effective remedy.

8.5 Participating Member States

EPPO was initially established through enhanced cooperation.

By November 2026, 25 Member States participate in the system. Hungary joined in 2026 following the completion of the applicable procedure.

Denmark and Ireland remain outside EPPO.

The non-participation of a Member State does not mean that offences affecting EU financial interests committed there are beyond legal control. National authorities, OLAF, and other cooperation mechanisms continue to play a role, although the absence of EPPO participation can create additional jurisdictional and coordination challenges.

8.6 EPPO’s Results and Institutional Evaluation

The Commission published its first evaluation of the EPPO Regulation on 18 September 2026.

The evaluation found that EPPO had developed substantially since becoming operational, particularly in complex cross-border investigations.

According to the Commission, the number of investigations increased from 515 in 2021 to 3,602 in 2025. The total amount concerned by freezing orders increased from €147.3 million to €1.13 billion over the same period.

The evaluation also identified areas requiring improvement, including differences in national implementation, difficulties in information exchange, and uneven support from Member States.

The report is particularly important because it examines the effectiveness of the legal framework after five years of operational activity. European Commission: Evaluation of the EPPO Regulation, 18 September 2026.

9. OLAF and EPPO: Complementary Mandates, Different Functions

The relationship between OLAF and EPPO is fundamental to understanding the EU’s anti-fraud architecture.

Both institutions protect the Union’s financial interests, but they do so through different legal functions.

OLAF	EPPO
Administrative investigations	Criminal investigations and prosecutions
Investigates fraud, irregularities, and serious misconduct affecting EU interests	Investigates criminal offences within its legal competence
Issues financial, judicial, disciplinary, and administrative recommendations	Brings criminal cases before national courts
Does not itself prosecute criminal offences	Exercises prosecutorial powers through European Delegated Prosecutors
Operates throughout the EU within its mandate	Operates in participating Member States

The distinction is not simply organisational. It reflects the different legal standards and consequences involved.

An OLAF investigation may establish that expenditure was improperly obtained and recommend recovery. EPPO may investigate whether the same conduct constitutes a criminal offence and whether the evidence justifies prosecution.

The two processes may run in parallel or in a coordinated sequence, subject to the applicable legal safeguards and rules on cooperation.

The European Commission’s 2026 evaluations of OLAF and EPPO emphasised that their mandates are complementary rather than interchangeable. They also identified opportunities to improve information exchange and coordination.

The European Court of Auditors had previously identified weaknesses in cooperation between the two bodies, particularly concerning the exchange of information and follow-up of financial recovery recommendations.

The challenge is to ensure that administrative and criminal investigations reinforce one another without duplicating work, compromising evidence, or undermining procedural rights.

10. The European Court of Auditors: Independent External Financial Oversight

The European Court of Auditors is the Union’s independent external auditor.

Its constitutional basis is Article 287 TFEU.

The Court examines the accounts of all revenue and expenditure of the Union and assesses whether financial operations have been carried out legally and regularly.

It also evaluates whether financial management has been sound.

Its work differs from that of OLAF and EPPO. The ECA does not ordinarily investigate individual criminal offences or prosecute persons suspected of fraud. Instead, it examines financial systems, transactions, management procedures, and the reliability of the Union’s accounts.

10.1 The Statement of Assurance

The Court’s annual report includes a Statement of Assurance concerning the reliability of the EU accounts and the legality and regularity of the underlying transactions.

The Statement of Assurance is important because it provides Parliament and the Council with an independent assessment of the financial implementation of the budget.

The Court may issue:

• An unqualified opinion.
• A qualified opinion.
• An adverse opinion.
• A disclaimer of opinion, where appropriate.

The form of opinion depends on the nature and significance of the audit findings.

A qualified or adverse opinion does not automatically establish fraud. Audit findings may arise from administrative mistakes, ineligible expenditure, weak control systems, or non-compliance with complex legal requirements.

10.2 Error Rates and Fraud

The distinction between error and fraud is essential.

An error may occur where a beneficiary incorrectly calculates eligible costs, fails to satisfy a technical condition, or provides incomplete documentation.

Fraud requires intentional conduct satisfying the applicable legal definition.

The ECA’s estimated error rate is therefore not a measure of the amount of proven fraud in the EU budget.

For the 2025 financial year, the ECA reported an estimated overall error level of 3.8% in EU budget expenditure accepted in the accounts. It also identified a higher estimated error level of 5.6% for complex reimbursement-based expenditure.

These figures concern the legality and regularity of expenditure and should not be interpreted as establishing that the corresponding amounts were obtained through criminal conduct.

The ECA also issued a qualified opinion concerning expenditure under the Recovery and Resilience Facility, identifying material findings in a number of payments.

The figures illustrate the difficulty of managing large-scale expenditure through complex programmes involving several administrative levels. They also demonstrate why audit findings must be distinguished from criminal investigations.

10.3 Special Reports and Recommendations

In addition to its annual reports, the ECA publishes special reports examining particular programmes, policy areas, and financial management systems.

These reports may identify weaknesses in procurement, grant allocation, performance measurement, internal controls, or the recovery of improperly spent funds.

The recommendations are directed towards improving the financial administration of the Union.

The Court’s findings can also contribute to parliamentary scrutiny and may identify matters requiring further investigation by the Commission, OLAF, or national authorities.

Official information: European Court of Auditors.

11. The Role of Member States in Protecting EU Financial Interests

Although the European institutions have important investigative and supervisory powers, Member States remain central to the protection of the EU budget.

A significant proportion of Union expenditure is implemented through shared management.

National and regional authorities administer agricultural payments, cohesion funding, social programmes, infrastructure projects, and other forms of financial assistance.

They are responsible for verifying eligibility, checking supporting documents, conducting inspections, and reporting irregularities.

Under Article 325 TFEU, Member States must take measures against fraud affecting the Union’s financial interests that are comparable to those used against fraud affecting their own financial interests.

This obligation is known as the principle of assimilation.

Member States must also coordinate their action with the Commission and cooperate with OLAF, EPPO where applicable, and other competent bodies.

11.1 Reporting Irregularities

National authorities must report relevant irregularities and suspected fraud in accordance with the applicable sectoral legislation and reporting procedures.

The Irregularity Management System (IMS) is an important instrument for the collection and exchange of information concerning irregularities affecting EU funds.

Reporting helps the Commission monitor financial risks, identify recurring patterns, and evaluate the effectiveness of national control systems.

11.2 Administrative and Judicial Enforcement

National authorities may suspend payments, recover funds, impose administrative penalties, and refer suspected criminal conduct to competent investigative bodies.

National courts remain responsible for determining criminal liability in proceedings brought by national prosecutors or European Delegated Prosecutors acting within EPPO’s framework.

This arrangement preserves the central role of national judicial systems while allowing EU-level coordination and prosecution in specified cases.

11.3 Coordination and Cooperation

Member States must provide appropriate assistance to the Commission and relevant EU bodies.

They must facilitate access to records, provide information, conduct inspections where required, and ensure that national administrative and judicial authorities can cooperate effectively.

Weaknesses in national cooperation can undermine the effectiveness of the entire system. A fraudulent transaction may involve a beneficiary in one Member State, a company registered in another, and financial transfers through several additional jurisdictions.

Effective protection therefore requires timely information exchange and coordinated action.

12. Recovery of EU Funds and Financial Responsibility

The recovery of improperly used EU funds is one of the most practical consequences of financial control.

Recovery may arise from several different legal situations:

• Expenditure was ineligible under the applicable programme.
• A beneficiary provided inaccurate information.
• Procurement rules were breached.
• A grant agreement was violated.
• A payment was obtained through fraud.
• A national control system failed to prevent or detect irregular expenditure.

The legal basis for recovery depends on the relevant funding instrument, the Financial Regulation, the grant agreement, and applicable national law.

12.1 Recovery from Beneficiaries

Where a beneficiary receives money without satisfying the relevant conditions, the competent authority may issue a recovery order or take other legally authorised measures.

The beneficiary must have access to the applicable procedural safeguards, including information about the grounds for recovery and the possibility of challenging the decision.

Recovery is generally intended to restore the financial position that should have existed if the unlawful or ineligible payment had not occurred.

It is not necessarily a criminal penalty.

12.2 Financial Corrections Against Member States

Where weaknesses in national management and control systems result in irregular expenditure, the Commission may impose financial corrections in accordance with the relevant legislation.

A financial correction may require a Member State to return funds to the Union budget or exclude expenditure from EU financing.

The correction may be based on individual irregularities or systemic deficiencies.

This is particularly important under shared management, where the Commission must protect the Union’s financial interests even though national authorities administer the relevant programmes.

12.3 Recovery and Criminal Proceedings

Where fraud is suspected, recovery may proceed alongside criminal investigations.

The two processes serve different purposes.

Recovery protects the budget by restoring funds that were improperly paid. Criminal proceedings determine whether an individual or legal person is criminally responsible and whether a criminal penalty should be imposed.

A criminal conviction may support recovery proceedings, but recovery does not always require a prior conviction.

Equally, repayment of the money does not necessarily extinguish criminal liability.

13. The Early Detection and Exclusion System

The Early Detection and Exclusion System (EDES) is an important preventive instrument within the EU’s financial framework.

It allows the Union to identify and manage risks involving economic operators and other entities participating in the implementation of EU funds.

The system may be used in circumstances involving serious professional misconduct, fraud, corruption, grave breaches of contractual obligations, significant irregularities, or other exclusion grounds established by the Financial Regulation.

EDES serves two related purposes.

First, it allows the Union to identify entities presenting risks to the financial interests of the Union.

Second, it provides a legal mechanism for excluding certain entities from EU funding procedures for a specified period, subject to the applicable conditions.

The system is not intended to create automatic or arbitrary exclusion. Decisions must respect procedural safeguards, proportionality, and the rights of the persons or entities concerned.

The Financial Regulation also provides for an independent assessment process in specified circumstances, helping to ensure that exclusion decisions are based on appropriate evidence and legal criteria.

EDES is particularly important because preventing an unsuitable entity from receiving further funding may protect the Union more effectively than attempting to recover money after a new irregularity has occurred.

14. The Rule-of-Law Conditionality Mechanism

The protection of the EU budget is also connected with the rule of law.

Regulation (EU, Euratom) 2020/2092 establishes a general regime of conditionality designed to protect the Union budget where breaches of the principles of the rule of law in a Member State affect or seriously risk affecting the sound financial management of the Union budget or the protection of its financial interests in a sufficiently direct way.

The mechanism is not a general political sanction for every disagreement between the Union and a Member State.

Its legal application requires the specific connection between the relevant rule-of-law breach and the protection of the Union’s financial interests.

Possible measures include suspension of payments, suspension of commitments, and restrictions concerning the implementation of programmes.

The mechanism is distinct from Article 7 TEU, which provides a separate procedure concerning serious breaches of the Union’s foundational values.

14.1 The Court of Justice’s Judgment

In February 2022, the Court of Justice rejected challenges brought by Hungary and Poland against the Conditionality Regulation.

In Joined Cases C-156/21 and C-157/21, the Court confirmed the validity of the mechanism and its compatibility with the Treaty framework.

The judgments clarified that the regulation is a budgetary protection instrument rather than a general mechanism for enforcing all obligations arising from Article 2 TEU.

The required connection with the Union’s financial interests must be established before measures can be adopted.

The case law demonstrates that budgetary conditionality operates within the legal framework of the Union and remains subject to judicial review.

15. Institutional Accountability and Fundamental Rights

Anti-fraud investigations must be effective, but they must also comply with fundamental rights.

The protection of public money cannot justify arbitrary searches, unjustified disclosure of confidential information, or the disregard of procedural safeguards.

Persons subject to investigations may enjoy rights arising from the Charter of Fundamental Rights of the European Union, applicable EU legislation, national constitutional law, and the European Convention on Human Rights.

Relevant Charter provisions include:

• Article 7, respect for private and family life.
• Article 8, protection of personal data.
• Article 17, right to property.
• Article 41, right to good administration, applicable to EU institutions and bodies within its scope.
• Article 47, right to an effective remedy and a fair trial.
• Article 48, presumption of innocence and rights of the defence.
• Article 49, principles of legality and proportionality of criminal offences and penalties.

Investigative measures must have a valid legal basis and comply with the applicable requirements of necessity and proportionality.

The rights of defence are particularly important where an investigation may lead to administrative penalties, exclusion from funding, recovery proceedings, or criminal prosecution.

The institutional independence of OLAF and EPPO must therefore be accompanied by accountability and judicial oversight.

16. Recent Developments: Reforming the EU Anti-Fraud Architecture

The EU’s anti-fraud system has developed considerably since the creation of OLAF and the establishment of EPPO.

However, the growing scale and complexity of EU financial programmes have exposed difficulties in coordination, information exchange, and the recovery of improperly spent funds.

In July 2025, the Commission launched a review of the EU Anti-Fraud Architecture. The review examines how OLAF, EPPO, Europol, Eurojust, and national authorities cooperate in protecting the Union’s financial interests.

The objective is to identify ways of improving the effectiveness and coherence of the system.

In September 2026, the Commission published its first evaluation of the EPPO Regulation and an evaluation of the OLAF framework.

The evaluations recognised the contribution made by both institutions but identified areas requiring improvement, particularly concerning the exchange of information, national implementation, cooperation, and the measurement of recovery outcomes.

The European Court of Auditors had also drawn attention to weaknesses in the exchange of information between OLAF and EPPO and insufficient Commission oversight of certain recovery processes.

Its December 2025 report examined the handling of fraud allegations and the cooperation between the principal anti-fraud bodies. It highlighted that the effectiveness of investigations depends not only on investigative powers but also on whether findings lead to timely financial and judicial action.

The Commission’s 2026 assessment of the OLAF framework similarly recognised that the existing regulation contributes significantly to protecting the Union’s financial interests, while identifying areas where its application and cooperation arrangements could be improved.

These developments should be understood as part of an ongoing institutional review. They do not mean that OLAF and EPPO have been merged or that their legal mandates have been replaced.

The principal challenge is to ensure that the institutions operate as a coherent system, with clear responsibilities and reliable procedures for exchanging information and following up investigations.

Sources:

• European Commission – Evaluation of the EPPO Regulation, September 2026
• European Court of Auditors – Auditors Flag Weaknesses in the EU’s Anti-Fraud Fight, December 2025
• European Commission – 2026 Evaluation of the OLAF Regulation

17. Practical Examples

Example 1: Fraudulent procurement involving EU funding

A public authority receives EU funding for an infrastructure project. During the procurement procedure, officials manipulate tender specifications to favour a company connected to one of the decision-makers.

The irregularity may involve a breach of procurement law and the conflict-of-interest rules under the Financial Regulation.

OLAF may investigate the administrative aspects where its jurisdiction is engaged. If evidence indicates criminal corruption or fraud within EPPO’s competence, EPPO may initiate or continue a criminal investigation.

The competent authorities may also exclude the company from future EU funding procedures and recover expenditure that was unlawfully incurred.

Example 2: False declarations in an agricultural subsidy application

A farmer submits false information about the land used for an agricultural support application and receives payments for areas that do not satisfy the eligibility requirements.

The national paying agency may identify the discrepancy through administrative checks or an inspection.

The authority may recover the ineligible amount and apply the relevant administrative consequences.

If evidence indicates deliberate fraudulent conduct, the matter may also be referred for criminal investigation.

The repayment obligation and the criminal investigation remain legally distinct.

Example 3: Cross-border VAT fraud

A group of companies operates a fraudulent VAT scheme involving transactions in several Member States.

The scheme uses fictitious transactions and false invoices to create unjustified tax advantages and damage the Union’s financial interests.

Where the conditions and €10 million threshold under the PIF Directive are satisfied, EPPO may investigate and prosecute the relevant offences in participating Member States.

OLAF may contribute administrative expertise and cooperate in accordance with the applicable arrangements.

National tax authorities and law-enforcement bodies remain important participants in the investigation.

Example 4: Improper use of research funding

A research institution receives an EU grant but uses part of the funding for activities unrelated to the approved project.

An audit identifies the expenditure as ineligible.

The Commission or competent implementing authority may require repayment and introduce corrective measures.

If the evidence does not establish intentional deception, the matter may remain an administrative financial issue. If the institution knowingly submitted false records to obtain the grant, further investigation may be justified.

The example demonstrates why an irregularity should not automatically be classified as criminal fraud.

Example 5: Misconduct involving an EU official

An EU official is suspected of manipulating an internal procurement process in return for an improper financial advantage.

OLAF may investigate the alleged misconduct under its internal investigative mandate.

The appointing authority may consider disciplinary action following the investigation.

If the evidence indicates a criminal offence affecting the Union’s financial interests, the matter may also be referred to the competent criminal authorities, including EPPO where its jurisdiction applies.

18. Key Takeaways

1. The protection of the Union’s financial interests is grounded principally in Articles 310–325 TFEU, particularly Article 325, which establishes obligations for the Union and Member States to combat fraud.
2. The EU Financial Regulation, Regulation (EU, Euratom) 2024/2509, provides the principal framework for financial control, budget implementation, procurement, grants, recovery, and prevention of conflicts of interest.
3. An irregularity, suspected fraud, and a proven criminal offence are legally distinct concepts. An audit error does not automatically establish fraud.
4. The PIF Directive, Directive (EU) 2017/1371, harmonises minimum rules concerning criminal offences affecting the Union’s financial interests, including fraud, corruption, misappropriation, and certain serious cross-border VAT offences.
5. OLAF conducts administrative investigations and issues financial, judicial, disciplinary, and administrative recommendations. It does not itself prosecute criminal offences.
6. EPPO investigates and prosecutes criminal offences affecting the Union’s financial interests within its competence, using a central European structure and European Delegated Prosecutors in participating Member States.
7. The European Court of Auditors provides independent external audit and assesses the legality, regularity, and sound financial management of EU expenditure.
8. The Commission and national authorities are responsible for implementing financial controls, recovering improperly used funds, and ensuring compliance with EU financial rules.
9. The Early Detection and Exclusion System allows the Union to identify financial risks and exclude entities from funding procedures under the conditions established by the Financial Regulation.
10. Regulation (EU, Euratom) 2020/2092 establishes a conditionality mechanism protecting the EU budget where rule-of-law breaches have the required direct connection with the Union’s financial interests.
11. The protection of the EU budget must respect fundamental rights, including the presumption of innocence, the right to a fair trial, data protection, and effective judicial remedies.
12. Recent evaluations have identified the need for better information exchange, coordination, and follow-up between the institutions responsible for protecting the Union’s financial interests.

19. Frequently Asked Questions

1. What does the protection of the Union’s financial interests mean?

It refers to the legal and institutional measures protecting the EU’s revenue, expenditure, assets, and financial operations against fraud, corruption, irregularities, and other unlawful conduct.

2. What is the difference between OLAF and EPPO?

OLAF conducts administrative investigations and issues recommendations concerning financial recovery, disciplinary action, and administrative improvements. EPPO investigates and prosecutes criminal offences affecting the Union’s financial interests within its competence.

3. Does OLAF have the power to arrest or prosecute individuals?

No. OLAF is an administrative investigative body. It may collect evidence and issue judicial recommendations, but criminal prosecution is carried out by competent national authorities or EPPO within its jurisdiction.

4. What is the PIF Directive?

Directive (EU) 2017/1371 establishes minimum criminal-law requirements for combating fraud and other offences affecting the Union’s financial interests. It harmonises important definitions and requires Member States to provide effective criminal penalties.

5. Does every irregularity involving EU funds constitute fraud?

No. An irregularity may result from an administrative mistake, incorrect calculation, or failure to comply with funding conditions. Fraud requires intentional conduct satisfying the applicable legal definition.

6. What is the European Court of Auditors’ role in anti-fraud protection?

The ECA independently audits EU revenue and expenditure, examines the legality and regularity of transactions, and evaluates financial management. It does not ordinarily prosecute fraud or exercise criminal investigative powers.

7. Can EU funds be recovered without a criminal conviction?

Yes. Recovery is an administrative or financial process governed by the applicable funding rules and legal instruments. It may proceed where expenditure is ineligible or improperly paid, even if no criminal offence has been established.

8. What happens if a Member State fails to protect EU funds properly?

The Commission may require corrective measures, suspend or interrupt payments, and apply financial corrections where the legal conditions are satisfied. Other mechanisms may also apply, including the rule-of-law conditionality regime.

9. What is EPPO’s territorial scope?

EPPO operates in participating Member States. As of November 2026, 25 Member States participate, while Denmark and Ireland remain outside the system. National authorities and other EU cooperation mechanisms continue to address offences in non-participating Member States.

10. What is the Early Detection and Exclusion System?

EDES is a preventive mechanism allowing the Union to identify financial risks and, where the legal conditions are met, exclude entities from EU funding procedures for specified periods.

11. Does the EU have its own criminal court for fraud affecting its budget?

No. EPPO is a prosecutorial body, not a criminal court. It investigates and prosecutes cases before competent national courts in participating Member States.

12. Why are OLAF and EPPO both necessary?

Their functions are complementary. OLAF protects the budget through administrative investigations, financial recommendations, and improvements to control systems. EPPO addresses criminal responsibility through investigation and prosecution. Their cooperation allows the Union to address both the financial and criminal consequences of misconduct.

20. Conclusion

The protection of the Union’s financial interests is essential to the credibility and effectiveness of European integration. The EU budget finances common policies and investments that depend on the proper use of public resources. Without effective financial controls, independent oversight, and enforceable anti-fraud mechanisms, the Union would struggle to maintain confidence in its institutions and its financial programmes.

The legal framework reflects the complexity of this responsibility. The Commission and national authorities manage and supervise expenditure; the European Court of Auditors provides external audit; OLAF investigates administrative fraud and irregularities; and EPPO prosecutes criminal offences affecting the Union’s financial interests within its jurisdiction.

These institutions do not form a single enforcement hierarchy. They perform different functions under separate legal mandates, and their effectiveness depends on cooperation, information exchange, and appropriate follow-up.

The distinction between an error and fraud is particularly important. Financial irregularities may justify recovery and administrative correction without establishing criminal liability. Conversely, deliberate deception, corruption, and misappropriation may require criminal investigation and prosecution in addition to financial recovery.

The continuing development of the anti-fraud architecture demonstrates that protecting the EU budget is not simply a matter of detecting wrongdoing. It requires prevention, reliable audit systems, independent investigation, effective prosecution, recovery of funds, and institutional accountability.

Ultimately, the protection of the Union’s financial interests is a legal expression of a broader principle: public money must be administered according to law, used for its authorised purposes, and subject to meaningful scrutiny. The legitimacy of the EU budget depends not only on how much the Union collects or spends, but also on whether its financial institutions can demonstrate that those resources are managed with integrity, transparency, and responsibility.

21. Primary Legal Sources and Further Reading

Treaty provisions

• Treaty on European Union, Article 2 – Union Values
• TEU, Article 4(3) – Principle of Sincere Cooperation
• TEU, Article 19 – Effective Judicial Protection
• TFEU, Article 310 – General Principles of the EU Budget
• TFEU, Article 317 – Budget Implementation
• TFEU, Article 319 – Budgetary Discharge
• TFEU, Article 325 – Combating Fraud Affecting the Union’s Financial Interests
• TFEU, Article 86 – European Public Prosecutor’s Office

Principal EU legislation

• Regulation (EU, Euratom) 2024/2509 – EU Financial Regulation
• Regulation (EU, Euratom) No 883/2013 – OLAF Investigations
• Regulation (EU, Euratom) 2020/2223 – Amendments to the OLAF Regulation
• Council Regulation (EU) 2017/1939 – European Public Prosecutor’s Office
• Directive (EU) 2017/1371 – Protection of the Union’s Financial Interests (PIF Directive)
• Regulation (EU) 2020/2092 – Rule-of-Law Conditionality Mechanism
• Regulation (EC) No 2988/95 – Protection of the European Communities’ Financial Interests

Institutional materials and reports

• European Anti-Fraud Office (OLAF)
• OLAF Annual Report 2025
• European Public Prosecutor’s Office (EPPO)
• European Commission – Evaluation of the EPPO Regulation, 2026
• European Commission – Evaluation of the OLAF Regulation, 2026
• European Court of Auditors
• European Court of Auditors – Auditors Flag Weaknesses in the EU’s Anti-Fraud Fight, 2025
• European Commission – Protection of the EU Budget
• European Commission – Protecting the EU’s Financial Interests