Introduction
Law No. 5809 on Electronic Communications is the principal legislation governing the electronic communications sector in Turkey. For foreign investors, this law is one of the most important legal instruments to understand before entering the Turkish telecommunications, internet service, infrastructure, satellite communication, mobile communication, data transmission, cloud communication, or digital connectivity market.
Turkey has a large and strategically important electronic communications market. The country’s geographic location, young population, growing digital economy, expanding fiber infrastructure, mobile internet usage, e-commerce development, data center demand, cloud services, fintech ecosystem, and cross-border connectivity potential make the Turkish telecom sector attractive for foreign investors. However, this market is also highly regulated. A foreign investor cannot treat telecom services as ordinary commercial activities. Market entry generally requires a careful analysis of Law No. 5809, BTK regulations, authorization requirements, usage rights, consumer protection rules, network security obligations, data protection law, cybersecurity duties, competition issues, and administrative sanctions.
The Information and Communication Technologies Authority, known in Turkish as Bilgi Teknolojileri ve İletişim Kurumu or BTK, is the central regulatory and supervisory authority for the Turkish electronic communications sector. BTK’s official materials state that Law No. 5809 covers regulation, authorization, inspection and reconciliation activities related to electronic communication services, devices and systems. BTK is also responsible for restricting or prohibiting non-compliant products or services and applying sanctions where necessary.
For foreign investors, Law No. 5809 should be analyzed together with Turkey’s foreign direct investment framework. Turkey’s official investment portal states that Turkish investment legislation offers equal treatment for investors and that the Foreign Direct Investment Law No. 4875 aims to encourage foreign direct investment, protect investor rights, align investor and investment definitions with international standards, and establish a notification-based system rather than an approval-based one for foreign investment.
This means that foreign investment is generally welcomed under Turkish law, but telecom activities remain subject to sector-specific rules. A foreign investor may be free to invest in Turkey, but it must still comply with Law No. 5809 and obtain the necessary BTK authorization where the contemplated activity falls within the scope of electronic communications regulation.
Purpose and Scope of Law No. 5809
Law No. 5809 establishes the main legal framework for electronic communications services, electronic communications networks, infrastructure operation, authorization, consumer rights, inspection, spectrum management, technical regulation, competition, administrative sanctions, and operator obligations in Turkey.
The scope of the law is broad. It covers the provision of electronic communications services, establishment and operation of electronic communications networks and infrastructure, the use of radio frequencies and numbering resources, technical standards, market regulation, consumer protection, and regulatory supervision. This is highly relevant for foreign investors because many business models that appear to be “technology services” may fall within electronic communications regulation if they involve transmission, routing, access, connectivity, number usage, frequency usage, or infrastructure operation.
BTK explains that electronic communications include the transmission, sending and reception of any kind of sign, symbol, sound, image and data that can be converted into electrical signals through cable, radio, optical, electrical, magnetic, electromagnetic, electrochemical, electromechanical or other transmission systems. BTK also defines electronic communications infrastructure, infrastructure operation, electronic communications service and electronic communications network in a broad manner.
This broad definition is critical. A foreign investor may intend to provide internet access, corporate connectivity, satellite services, data transmission, private network services, IoT connectivity, virtual mobile services, cloud communication tools, VoIP-based services, or infrastructure leasing. Each of these activities may require a regulatory classification under Law No. 5809.
Why Law No. 5809 Matters for Foreign Investors
Law No. 5809 matters for foreign investors because it determines whether a proposed business model can be launched freely, requires BTK authorization, requires usage rights, or may be subject to special technical, financial and administrative conditions.
A foreign investor should not enter the Turkish telecom market by relying only on general company law or foreign investment law. The telecom sector is subject to public-law supervision because electronic communications services affect national security, public order, consumer rights, emergency communications, privacy, cybersecurity, market competition, and the efficient use of scarce public resources.
The most important legal question is whether the investor’s planned activity constitutes an electronic communications service, network or infrastructure operation. If it does, the investor must assess authorization requirements before starting operations. Operating without authorization may lead to administrative sanctions, suspension of activities, equipment-related measures, cancellation risks, consumer claims, contract disputes and reputational damage.
Law No. 5809 also matters because it affects the structure of the investment. The company’s legal form, articles of association, paid-in capital, shareholder structure, management eligibility, application documents, CEVHER filing process, administrative fees, usage right fees and continuing compliance obligations may all be determined by BTK rules issued under Law No. 5809.
BTK as the Regulatory Authority
BTK is the main authority responsible for regulating and supervising the Turkish electronic communications sector. Its role includes authorization, audit, consumer protection, technical regulation, spectrum management, numbering, access and tariffs, sectoral competition, network and information security, and administrative enforcement.
For foreign investors, this means that BTK is not merely an institution that receives an initial application. It is the regulator that supervises the operator throughout its activity in Turkey. A company may obtain authorization but still face regulatory risk if it fails to maintain authorization conditions, update its information, pay administrative fees, comply with consumer rules, protect network security, observe tariff transparency, meet data protection obligations, or respond properly to audits.
BTK’s audit page states that, under Law No. 5809, operators are monitored for compliance with license conditions, equipment standards, sectoral legislation and spectrum usage, and that sanctions may be imposed on operators that do not comply with regulations. BTK may supervise operators in financial, technical, legal and administrative aspects and request information and documents.
Therefore, a foreign investor should build a regulatory compliance structure from the beginning. The investment should not be limited to incorporation and commercial launch. It should include a regulatory calendar, legal monitoring, internal procedures, technical documentation, financial reporting, consumer complaint management, cybersecurity controls and data protection governance.
Authorization under Law No. 5809
Authorization is the core market-entry requirement under Law No. 5809. BTK explains that, under the authorization regime introduced by Law No. 5809, authorizations are granted through notification or through the granting of usage rights. Companies wishing to provide electronic communications services or establish and operate electronic communications networks or infrastructure must notify BTK before commencing operations.
If the service does not require allocation of scarce resources such as numbers, frequencies or satellite positions, authorization may be completed through notification in accordance with BTK procedures. If resource allocation is required, the company must obtain usage rights from BTK. BTK determines which electronic communications services require usage rights and whether the number of such usage rights should be limited.
For foreign investors, this distinction is fundamental. A simple notification-based authorization may be appropriate for some service models, while mobile communications, satellite communications, frequency-based services, numbering-based services or nationwide spectrum usage may involve more complex usage right procedures.
The investor must first classify the service correctly. A wrong classification may lead to an incomplete application, rejection, delay, future enforcement action or allegations of unauthorized activity. Legal, technical and commercial teams should work together to define the service before approaching BTK.
Services Subject to Authorization
BTK states that functions defined in Law No. 5809, including electronic communications, electronic communications infrastructure, infrastructure operation, electronic communications service and electronic communications network, may be carried out by obtaining authorization from the Authority.
In practice, services that may require authorization include internet service provision, fixed telephone services, mobile communication services, infrastructure operation, satellite communication, data transmission, GMPCS mobile telephone services, virtual mobile network services, radio communication services, corporate connectivity services, network leasing, and other electronic communications activities.
Foreign investors should also be careful with new-generation business models. A company may not describe itself as a telecom operator, but it may still be regulated if it provides connectivity, signal transmission, access, routing, electronic communications infrastructure, communication between users, or telecom-related network functions.
For example, a company offering IoT connectivity for logistics devices, satellite-based internet for corporate customers, cloud-based voice communication, private wireless networks for industrial facilities, or data transmission infrastructure for enterprise customers may need to assess whether BTK authorization applies.
Services Not Subject to Authorization
Not every communication-related system requires BTK authorization. BTK explains that, according to Article 8 of Law No. 5809, the general principle is that electronic communications services, networks or infrastructure should primarily be procured from operators authorized by BTK. However, certain systems used exclusively by a natural or legal person for personal or institutional needs within immovable properties under their own use, not exceeding the boundaries of each immovable property, not used to provide services to third parties, not pursued for commercial purposes and not offered to the public are not subject to authorization. Certain systems established by public institutions exclusively for their own services under their specific laws are also outside authorization.
This exception is important for foreign investors planning internal corporate networks, factory communication systems, campus networks, in-building infrastructure, closed industrial networks or private systems. However, the exception must be interpreted carefully. If the service is offered to third parties, commercialized, extended beyond the relevant immovable property, or made available to the public, authorization may be required.
For example, a foreign manufacturing company that establishes an internal network inside its own factory for internal operational communication may fall outside authorization if all legal conditions are met. However, if that company provides network access to suppliers, tenants, customers, visitors or group companies for commercial purposes, the legal assessment changes.
Notification and Usage Rights
The distinction between notification and usage rights is one of the most important points under Law No. 5809. Notification is relevant where the activity does not require scarce public resources. Usage rights are relevant where the service requires numbers, frequencies, satellite positions or similar scarce resources.
BTK defines usage right as the right granted by the Authority for the use of scarce resources such as frequency, number and satellite position. Operators holding usage rights must pay usage right fees. Where the number of usage rights is not limited, the fee is determined by BTK; where the number is limited, the fee may result from a tender process.
Foreign investors should analyze usage rights before signing commercial contracts, purchasing expensive equipment or announcing market entry. A business model that depends on radio frequencies, numbering resources or satellite capacity may face regulatory limitations, tender procedures, fees, technical conditions and service commencement obligations.
Usage rights also affect valuation. A company that holds valuable usage rights may have a different commercial profile from a company operating only under notification. Due diligence in telecom mergers and acquisitions must therefore include a detailed review of usage rights, duration, fees, conditions, compliance history and transfer restrictions.
Corporate Structure Requirements for Authorization
A foreign investor planning to apply for BTK authorization must establish or use a Turkish company that satisfies BTK requirements. BTK’s CEVHER application guidance states that, for authorization by notification or usage right together with notification, the applicant must be established as a limited liability company or joint-stock company solely for the purpose of carrying out activities subject to authorization or activities necessary to provide the authorized service.
The company’s articles of association must include appropriate wording, such as providing electronic communications or telecommunications services and/or establishing and operating a network or infrastructure. BTK also notes that the purpose and subject section should not include unrelated services such as food, automotive, tourism or construction where these are not necessary for the electronic communications service.
This requirement is often overlooked by foreign investors. Many investors prefer broad-purpose companies to preserve flexibility. However, in telecom authorization, an overly broad corporate purpose may create a regulatory problem. Therefore, the company’s articles of association should be drafted specifically for the intended telecom activity.
If the investor already has a Turkish subsidiary, the articles of association may need to be amended before the BTK application. This may require shareholder resolutions, trade registry filings, publication in the Trade Registry Gazette and document updates.
Paid-In Capital Requirements
BTK authorization may require a minimum paid-in capital. BTK’s application guidance states that, pursuant to the BTK Board Decision dated 10 March 2026 and numbered 2026/DK-YED/71, the paid-in capital must be TRY 2,500,000 for OKTH authorization and TRY 10,000,000 for other authorizations.
This is a current and important financial requirement for foreign investors. Capital planning should be completed before incorporation or application. If the company is established with insufficient capital, the investor may need to complete a capital increase process, which can delay authorization.
The paid-in capital should also be properly documented. It is not enough to state a capital amount on paper. The company should be able to demonstrate compliance through trade registry records, financial documents and application materials.
Because BTK decisions and monetary thresholds may change over time, investors should verify the latest capital requirement before filing an application.
Shareholder and Management Eligibility
BTK’s application guidance also includes eligibility requirements concerning shareholders and managers. Real person shareholders holding at least ten percent of the company’s shares, persons authorized to manage and represent the legal entity, and certain real person shareholders of legal entity shareholders must not have specified criminal convictions. These include certain information systems crimes, crimes against state security, crimes against the constitutional order, private life offenses, embezzlement, bribery, fraud, forgery, money laundering, tax evasion and certain violations under Law No. 5809.
For foreign investors, this means that shareholder and management due diligence is essential. The investor should review ultimate beneficial ownership, board members, managers, signatories, legal representatives and shareholding chains before filing the application.
Foreign documents may require notarization, apostille, legalization and sworn translation into Turkish. If a foreign shareholder is a legal entity, corporate documents showing incorporation, current status, representation authority and shareholding may be required. If foreign individuals are shareholders or managers, identity documents and equivalent criminal record documents may need to be prepared.
CEVHER Application Process
BTK conducts authorization-related applications through the CEVHER System. BTK’s guidance states that applications for initial authorization, additional authorization, authorization renewal, adequacy control period and similar processes are conducted through BTK’s CEVHER System via the institutional online platform. The process begins after logging in with an e-Government password and selecting the relevant request type, such as “Initial Authorization Application,” “Additional Authorization Application,” or “Renewal/Adequacy/Year-end Obligations.”
The CEVHER System is also used for operator information updates. BTK states that changes in information submitted by authorized operators must be notified through the “Operator Information Update” tab, and supporting documents must be uploaded where document submission is required.
For foreign investors, this creates two practical consequences. First, the investor needs local operational capability to use Turkish digital public systems, e-Government access, KEP address, authorized signatories and Turkish corporate documents. Second, regulatory compliance continues after authorization. Changes in company title, address, KEP address, management, shareholders, articles of association or authorization scope may require updates through CEVHER.
Administrative Fees
Law No. 5809 creates financial obligations for operators. BTK’s administrative fee page states that the authorization fee consists of administrative fees and usage right fees. It also states that the administrative fee contributes to costs arising from market analysis, regulation, supervision, technical monitoring and inspection services, market control, international cooperation, harmonization, standardization and other administrative expenses.
The Authorization Regulation provides that operators pay an annual administrative fee equal to thirty-five ten-thousandths of their previous year’s net sales reflected in the income statement, subject to the applicable minimum amount. Operators must submit approved income statements within the relevant periods, and the administrative fee is generally deposited into BTK’s bank account by the last day of June of the year following authorization unless otherwise determined by BTK.
Foreign investors should include these fees in the financial model. Telecom projects require not only incorporation capital and operational investment but also recurring regulatory costs. Failure to submit financial statements or pay administrative fees may create regulatory risk and may affect the operator’s authorization status.
Consumer Rights and End-User Protection
Law No. 5809 gives BTK duties concerning equal access to services, protection of consumers and end users, transparency and information, subscription agreements, processing of personal data and protection of privacy, and service quality.
For foreign investors, consumer protection is a major compliance area. Telecom operators must prepare transparent subscription agreements, clear tariff documents, lawful cancellation procedures, accurate billing systems, service quality mechanisms, complaint handling procedures and customer notification processes.
Common consumer disputes in Turkey include unfair invoices, unexpected tariff changes, excessive cancellation fees, failure to terminate subscriptions, internet speed problems, service interruptions, number portability issues, unauthorized value-added services, misleading campaigns and poor customer service.
Foreign investors should adapt their global consumer contracts to Turkish law. A standard international telecom contract may not be sufficient for Turkey. Local rules on subscription agreements, cancellation, tariffs, complaint response, data privacy and service quality must be incorporated.
Data Protection and Privacy
Telecom companies process large volumes of personal data. Subscriber identity information, contact details, phone numbers, IP addresses, traffic data, location data, billing records, customer service recordings, payment information and technical logs may all be personal data under Turkish law.
The Personal Data Protection Law No. 6698 aims to protect fundamental rights and freedoms, particularly privacy, in the processing of personal data and to regulate the obligations, principles and procedures binding on persons who process personal data.
For telecom operators, KVKK compliance must be combined with Law No. 5809 and sector-specific privacy obligations. Operators should prepare privacy notices, data processing inventories, explicit consent mechanisms where required, retention and deletion policies, cross-border transfer mechanisms, data breach procedures, access control systems and vendor agreements.
Foreign investors should pay special attention to cross-border data transfers. Group company access, cloud systems, global CRM platforms, international technical support, roaming arrangements and foreign cybersecurity vendors may involve transfer of personal data abroad. These transfers must be structured under Turkish data protection law.
Network and Information Security
Telecom operators are also subject to network and information security obligations. BTK states that the Turkish Constitution, Law No. 5809, privilege agreements and authorization regulations include obligations related to network and information security. The Regulation on Network and Information Security in the Electronic Communications Sector sets out procedures and principles operators must comply with to ensure network and information security.
BTK further states that some obligations apply to all operators, while additional obligations apply to operators holding specific authorization types such as infrastructure operation, internet service provision, fixed telephone service, virtual mobile network service, satellite communication service, and satellite/cable TV services, depending on annual net sales and other criteria.
Foreign investors should treat cybersecurity and network security as legal obligations, not merely technical issues. A telecom investment should include risk assessment, incident response planning, DDoS protection, access controls, monitoring, encryption, vendor security, business continuity, disaster recovery, corporate CSIRT/SOME structure where applicable, and audit-ready documentation.
Internet Law and Law No. 5651
Telecom investors may also become subject to Turkish internet law. Law No. 5651 regulates the responsibilities of content providers, hosting providers, access providers and public internet use providers. Its definitions include access provider, content provider, hosting provider, traffic information, access blocking, removal of content and social network provider.
A foreign investor providing internet access, hosting, cloud infrastructure, public Wi-Fi, data center services, platform services or internet-related technical services must determine whether it qualifies as an access provider, hosting provider, content provider or another regulated actor.
This classification is important because access providers may need to implement access-blocking decisions, hosting providers may need to comply with content removal procedures, and certain actors may have traffic data and notification obligations. A telecom project in Turkey should therefore be reviewed under both Law No. 5809 and Law No. 5651.
Technical Standards, Equipment and Spectrum
Telecom projects often involve equipment, devices, base stations, routers, antennas, radio systems, satellite equipment, fiber infrastructure, terminals and software. Law No. 5809 and BTK regulations may apply to technical standards, market surveillance, radio equipment compliance, spectrum monitoring and interference control.
BTK’s audit materials state that the Authority monitors, detects and eliminates irregular and illegal broadcasts and interferences in radio communications, inspects compliance of telecommunications equipment with standards, supervises licensed radio systems and monitors proper use of frequency bands.
Foreign investors importing or deploying telecommunications equipment in Turkey should verify technical conformity, radio equipment requirements, spectrum allocation, security certificates, electromagnetic standards, product safety and market surveillance rules. Equipment that works in another country may not automatically be compliant in Turkey.
Administrative Sanctions and Legal Risk
Non-compliance with Law No. 5809 may lead to administrative sanctions. BTK may impose sanctions where operators fail to comply with authorization conditions, legislation, spectrum rules, technical standards, service quality obligations, tariff rules, information requests or audit requirements.
For foreign investors, administrative sanctions may create serious commercial consequences. They may affect market entry, ongoing operations, financing, acquisition valuation, reputation, customer contracts and investor confidence.
Legal risks may include unauthorized operation, incorrect authorization category, failure to maintain capital or corporate eligibility conditions, failure to update CEVHER records, non-payment of administrative fees, misuse of frequencies, failure to comply with consumer rules, weak data protection practices, cybersecurity failures, failure to implement Law No. 5651 obligations and incomplete responses to BTK requests.
Where BTK imposes an administrative sanction, the company may challenge the decision before administrative courts. However, litigation strategy must be prepared quickly because administrative litigation deadlines are strict. Technical evidence, legal interpretation, proportionality arguments, procedural objections and compliance records may be decisive.
Due Diligence for Foreign Investors
Foreign investors acquiring or partnering with a Turkish telecom company should conduct detailed regulatory due diligence. Ordinary corporate due diligence is not enough. Telecom due diligence should examine:
The company’s BTK authorization status.
The scope and duration of authorization.
Usage rights, numbers, frequencies or satellite resources.
Administrative fee payment history.
CEVHER records and updates.
Shareholder and management compliance.
Paid-in capital compliance.
BTK audit history.
Administrative sanctions.
Consumer complaints and litigation.
Data protection compliance.
Cybersecurity framework.
Network and information security obligations.
Equipment and spectrum compliance.
Interconnection and infrastructure agreements.
Law No. 5651 obligations.
Vendor and cloud contracts.
Business continuity and incident response procedures.
This due diligence is essential because regulatory non-compliance may reduce company value or create post-acquisition liabilities.
Practical Market Entry Checklist
A foreign investor planning to enter the Turkish electronic communications market should follow a structured checklist.
First, define the technical and commercial business model.
Second, determine whether the activity falls under electronic communications regulation.
Third, identify whether BTK authorization is required.
Fourth, classify the authorization type.
Fifth, determine whether usage rights are needed for numbers, frequencies or satellite positions.
Sixth, establish or amend a Turkish limited liability or joint-stock company with suitable articles of association.
Seventh, ensure paid-in capital compliance.
Eighth, review shareholder and management eligibility.
Ninth, prepare application documents and KEP/e-Government infrastructure.
Tenth, file the application through CEVHER.
Eleventh, prepare consumer contracts, tariff documents and complaint procedures.
Twelfth, prepare KVKK and telecom privacy compliance documents.
Thirteenth, implement network and information security measures.
Fourteenth, assess Law No. 5651 obligations.
Fifteenth, prepare financial reporting and administrative fee compliance.
Sixteenth, monitor BTK decisions and update obligations continuously.
Conclusion
Law No. 5809 on Electronic Communications is the main legal framework for foreign investors entering Turkey’s telecommunications and electronic communications market. It regulates authorization, electronic communications services, networks, infrastructure, usage rights, consumer protection, administrative fees, inspection, technical standards, spectrum, network security and operator obligations.
Foreign investment in Turkey is generally supported by the country’s investment framework, including equal treatment and investor protection principles. However, telecom investment is subject to strict sectoral rules. A foreign investor must therefore combine investment planning with regulatory compliance under Law No. 5809.
The most important step is accurate classification of the proposed service. If the business model involves electronic communications services, network operation, infrastructure, access, transmission, frequency, numbering or satellite resources, BTK authorization may be required. If scarce resources are involved, usage rights may also be necessary.
For foreign investors, success in the Turkish telecom market depends not only on commercial opportunity but also on legal preparation. Proper company structure, correct articles of association, capital compliance, complete CEVHER application, usage right analysis, consumer protection, data protection, cybersecurity, technical compliance and audit readiness are essential.
A well-prepared investor can reduce regulatory risk, protect investment value, build trust with consumers and business partners, and operate lawfully in Turkey’s growing electronic communications market.
Frequently Asked Questions
What is Law No. 5809 on Electronic Communications?
Law No. 5809 is the main legislation governing electronic communications services, networks, infrastructure, authorization, consumer rights, inspection, spectrum, numbering, technical standards and operator obligations in Turkey.
Does a foreign investor need BTK authorization to provide telecom services in Turkey?
Yes, if the planned activity constitutes an electronic communications service or involves electronic communications network or infrastructure operation, BTK authorization may be required before commencing operations.
What is the difference between notification and usage right?
Notification applies where the service does not require scarce resources such as numbers, frequencies or satellite positions. Usage right is required where such scarce resources must be allocated by BTK.
Can a foreign-owned company apply for telecom authorization in Turkey?
Yes. A foreign investor may establish a Turkish limited liability company or joint-stock company and apply for authorization, provided that the company meets BTK’s corporate, capital, shareholder, management and documentation requirements.
What paid-in capital is required for BTK authorization?
According to BTK’s application guidance, pursuant to the Board Decision dated 10 March 2026 and numbered 2026/DK-YED/71, the paid-in capital is TRY 2,500,000 for OKTH authorization and TRY 10,000,000 for other authorizations.
What is the CEVHER System?
The CEVHER System is BTK’s online platform for authorization applications, additional authorization, renewal, adequacy procedures, year-end obligations and operator information updates.
Are telecom operators required to pay administrative fees?
Yes. Operators are required to pay administrative fees calculated under the applicable rules and submit approved income statements within the relevant periods.
Are private internal networks always subject to BTK authorization?
No. Certain systems used exclusively for personal or institutional needs within immovable properties, not extending beyond each property, not used for third-party services, not commercialized and not offered to the public may fall outside authorization.
Does Law No. 5809 include consumer protection?
Yes. BTK has duties concerning equal access, protection of consumers and end users, transparency, subscription agreements, personal data processing, privacy protection and service quality.
What are the main legal risks for foreign investors?
The main risks include unauthorized operation, incorrect service classification, failure to obtain usage rights, non-compliant company structure, insufficient capital, failure to update BTK records, administrative fee issues, consumer disputes, data protection violations, cybersecurity failures and BTK sanctions.
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