Learn how internal corporate investigations help foreign companies reduce criminal risks in Turkey. A complete 2026 legal guide covering compliance, evidence preservation, executive liability, prosecutor expectations, and corporate defence.

As regulatory enforcement continues to expand, multinational corporations operating in Turkey face increasing expectations to detect and address legal risks before they become criminal investigations. Allegations involving fraud, corruption, customs violations, sanctions compliance, money laundering, workplace accidents, environmental offences, data protection breaches, or accounting irregularities may quickly attract the attention of Turkish prosecutors.

Conducting an internal corporate investigation before criminal prosecution allows companies to identify legal risks, preserve evidence, strengthen compliance programs, and make informed decisions. A properly managed investigation may reduce financial losses, protect corporate reputation, and improve the company’s legal position during subsequent criminal proceedings.

This guide explains how internal corporate investigations work in Turkey, what foreign companies should expect under the 2026 legal framework, and why experienced legal representation is essential.

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What Is an Internal Corporate Investigation?

An internal corporate investigation is an independent legal review conducted by a company after discovering potential misconduct or regulatory violations.

The primary objectives are to:

• Identify relevant facts
• Preserve evidence
• Determine legal exposure
• Assess corporate liability
• Protect shareholder interests
• Strengthen compliance systems
• Prepare for possible regulatory or criminal investigations

Internal investigations should begin immediately after discovering credible allegations.

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When Should a Company Launch an Internal Investigation?

Foreign companies should consider initiating an internal investigation when they discover:

• Fraud allegations
• Corruption risks
• Suspicious financial transactions
• Customs irregularities
• Export control violations
• Sanctions compliance concerns
• Accounting inconsistencies
• Money laundering indicators
• Workplace fatalities
• Environmental incidents
• Data breaches
• Whistleblower complaints

Early action frequently limits future criminal exposure.

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Why Internal Investigations Matter Before Criminal Prosecution

A well-structured investigation enables companies to:

• Understand the scope of potential misconduct
• Preserve electronic evidence
• Interview key personnel
• Review financial records
• Strengthen compliance controls
• Correct internal weaknesses
• Prepare legal defence strategies

Delays may result in loss of evidence or increased legal risks.

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Common Criminal Risks for Foreign Companies

Turkish prosecutors may investigate allegations involving:

• Commercial fraud
• Customs offences
• Smuggling
• False accounting
• Forgery
• Tax-related crimes
• Money laundering
• Bribery
• Organized criminal activity
• Environmental offences
• Occupational safety violations

Each case depends on its specific facts and available evidence.

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Preserving Evidence

One of the first priorities is preserving all relevant evidence.

This includes:

• Emails
• Contracts
• Accounting records
• Banking documents
• Customs declarations
• Board resolutions
• Internal reports
• WhatsApp communications
• Cloud storage
• ERP data
• CCTV recordings
• Employee devices

Destroying or altering evidence may significantly increase legal exposure.

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Digital Forensic Review

Modern investigations rely heavily on digital evidence.

A forensic review may examine:

• Company servers
• Laptop computers
• Mobile phones
• Cloud platforms
• Accounting software
• Financial databases
• Access logs
• Internal messaging systems
• Electronic approvals

Digital evidence frequently determines the direction of criminal investigations.

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Employee Interviews

Internal interviews should be carefully planned.

Companies commonly interview:

• Directors
• Senior executives
• Compliance officers
• Finance personnel
• Human resources managers
• Customs specialists
• Procurement officers
• Sales managers
• IT personnel

Interviews should be conducted under legal supervision whenever possible.

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Reviewing Third-Party Relationships

Many corporate investigations involve external business partners.

Companies should review:

• Suppliers
• Distributors
• Customs brokers
• Freight forwarders
• Consultants
• Agents
• Contractors
• Financial intermediaries

Third-party misconduct may create significant legal exposure.

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Executive Liability

Senior management may face personal criminal investigations where prosecutors believe they:

• Approved unlawful transactions
• Ignored compliance warnings
• Failed to supervise employees
• Concealed evidence
• Participated in fraudulent activities

Executive accountability remains an important enforcement priority in Turkey.

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Compliance Program Assessment

Internal investigations should evaluate whether the company’s compliance system is effective.

Important areas include:

• Anti-corruption policies
• Anti-money laundering controls
• Export control procedures
• Sanctions screening
• Third-party due diligence
• Employee training
• Reporting mechanisms
• Internal audits
• Record retention

Strong compliance programs help reduce legal risks.

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Whistleblower Allegations

Many investigations begin with internal reports.

Companies should establish confidential reporting channels allowing employees to report:

• Fraud
• Bribery
• Financial misconduct
• Harassment
• Environmental violations
• Customs irregularities
• Accounting concerns

Every credible allegation should be investigated promptly.

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Cross-Border Investigations

Multinational companies frequently face simultaneous investigations across multiple jurisdictions.

Internal investigations may involve:

• Foreign subsidiaries
• International banking records
• Cross-border contracts
• Customs documentation
• International communications
• Overseas witnesses

Coordinated legal strategy is essential.

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Interaction with Turkish Prosecutors

If prosecutors later begin a criminal investigation, they may request:

• Corporate documents
• Accounting records
• Digital evidence
• Employee statements
• Compliance manuals
• Internal policies
• Transaction records
• Financial information

Preparation before official proceedings significantly improves corporate readiness.

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Common Mistakes Companies Make

Businesses often increase legal risks by:

• Ignoring early warning signs
• Delaying investigations
• Destroying electronic records
• Conducting informal interviews
• Failing to involve legal counsel
• Inadequate documentation
• Weak compliance systems
• Poor communication management

Early legal advice can prevent costly mistakes.

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Benefits of Early Legal Representation

Experienced legal counsel can assist companies by:

• Structuring internal investigations
• Protecting legal rights
• Managing document preservation
• Supervising employee interviews
• Reviewing compliance systems
• Assessing criminal exposure
• Communicating with authorities
• Developing defence strategies

Early intervention often reduces both corporate and personal liability.

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Frequently Asked Questions (FAQ)

1. What is an internal corporate investigation?

It is a confidential legal review conducted by a company to identify potential misconduct before regulatory or criminal proceedings begin.

2. Can an internal investigation prevent criminal prosecution?

Not necessarily. However, early investigations allow companies to identify legal risks, strengthen compliance, preserve evidence, and prepare an effective legal defence.

3. Should foreign companies conduct internal investigations in Turkey?

Yes. Multinational corporations operating in Turkey should investigate serious compliance concerns as soon as they are discovered.

4. Who should lead an internal investigation?

Internal investigations should generally be supervised by experienced external legal counsel to ensure independence and legal protection.

5. What evidence should be preserved?

Companies should preserve electronic communications, financial records, contracts, accounting documents, customs records, cloud data, and other relevant evidence.

6. Can directors become personally liable?

Yes. Directors and senior executives may face personal criminal investigations depending on their knowledge, decisions, and involvement.

7. What are the most common corporate criminal risks?

Common risks include fraud, corruption, customs offences, money laundering, export control violations, false accounting, and workplace safety offences.

8. Why is early legal advice important?

Immediate legal assistance helps companies protect evidence, minimize legal risks, respond appropriately to authorities, and manage investigations effectively.

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Client-Focused Legal Support

If your company is conducting an internal investigation or faces potential criminal prosecution in Turkey, obtaining experienced legal advice at the earliest stage is one of the most effective ways to protect your business, executives, and commercial reputation. A proactive legal strategy helps prevent unnecessary legal exposure and supports informed corporate decision-making.

Fırat Fesih Kaya Law Office represents multinational corporations, foreign investors, international businesses, directors, compliance officers, and senior executives in corporate criminal investigations, internal compliance reviews, customs matters, and white-collar crime cases in Turkey.

Phone: +90 312 434 22 22
Mobile: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yıldırım Tower, Office No:148, 06520 Balgat, Çankaya, Ankara, Turkey