What Is a MERSIS Number? How to Obtain One? Application Process and Everything You Need to Know

 

When establishing a company or making official changes to an existing business, one of the most important systems you will encounter is MERSIS. Designed to digitalize commercial registry procedures, this system enables businesses to manage official processes more efficiently and systematically from the moment they are established. As part of this system, every business is assigned a unique MERSIS number, which serves as its official digital identity in dealings with public institutions.

But what exactly is MERSIS? What is a MERSIS number used for, how can it be obtained, and in which transactions is it required? In this guide, we answer the most frequently asked questions about MERSIS and explain the entire process step by step.

 

What Is the MERSIS System and Why Is It Used?

 

MERSIS is the abbreviation for the Central Registry Record System. It is an electronic platform that stores information about businesses registered with the commercial registry, allowing official company-related procedures to be managed through a single centralized system.

A wide range of commercial registry transactions—including company incorporation, trade name changes, address updates, and capital increases—are carried out through MERSIS. By centralizing these processes, the system simplifies information sharing among public authorities while ensuring that company records are securely maintained in one place.

Each business registered in the system is automatically assigned a unique MERSIS number. This number functions as the company's official identifier and is referenced by tax offices, notaries, chambers of commerce, and many other institutions during official transactions.

 

What Is a MERSIS Number?

 

A MERSIS number is a unique registration number assigned only once to every business registered with the commercial registry. Consisting of 16 digits, it represents the company's official identity within government records.

The number is generated based on the company's registered information in the system and is created so that no two businesses share the same identifier. This unique structure enables public institutions to match business records accurately while ensuring reliable tracking of official company information.

 

Where Can You Find a MERSIS Number?

 

Your company's MERSIS number can be found on several official documents and digital platforms, including:

• Commercial Registry Gazette records
• Tax certificate
• Company information available through the MERSIS portal
• Commercial registry application and update records

The MERSIS number displayed on these documents serves as the primary identification number required for virtually all official transactions involving your business.

 

How Is a MERSIS Number Generated for Legal Entities?

 

Joint stock companies, limited liability companies, cooperatives, and other legal entities are automatically assigned a MERSIS number when they are registered with the commercial registry. Once issued, this number remains unchanged throughout the company's existence.

All commercial registry procedures—such as updating the registered address, changing the company name, increasing share capital, or modifying the ownership structure—are conducted using the same MERSIS number. This ensures that the company's historical records remain securely stored under a single registration.

 

Can Sole Proprietorships Obtain a MERSIS Number?

 

Yes. The MERSIS system is not limited to corporations. Sole proprietorships registered with the commercial registry are also assigned their own unique 16-digit MERSIS number.

The fact that the business owner is an individual does not affect this process. Once the record is created, tax procedures, notarial transactions, and all commercial registry processes can be managed through the same centralized system. This integration allows sole proprietorships to become part of Türkiye's digital commercial infrastructure.

 

What Is a Temporary MERSIS Number?

 

During the company formation process, the system may generate a temporary MERSIS number so that certain official procedures can continue without interruption. This temporary identifier is used while the preliminary registration process is being completed.

Once the commercial registry registration is finalized and the application is approved, the temporary record is cancelled and replaced with a permanent MERSIS number. From that point onward, all official transactions are carried out using the permanent number.

 

How to Obtain a MERSIS Number?

 

A MERSIS number does not require a separate standalone application. When the commercial registry process is initiated for a newly established company, the system automatically generates and assigns the company's MERSIS number. In other words, obtaining a MERSIS number is a natural part of the company incorporation process.

 

Requirements for a MERSIS Application

 

To carry out transactions through MERSIS, users must first create an account and complete the identity verification process. Individuals establishing a company, company representatives, or authorized certified public accountants (CPAs) can log into the system and initiate the application process.

Identity verification can be completed either through the e-Government Gateway (e-Devlet) or directly via the MERSIS portal by entering the required information. To ensure a smooth application process, all submitted information must exactly match the official records.

 

Who Can Apply for MERSIS?

 

MERSIS applications are not limited to company owners. Individuals who have legal authorization or representative authority may also complete the application. Eligible applicants generally include:

• Individuals or legal entities planning to establish a new business
• Persons authorized to represent and bind an existing company
• Certified Public Accountants (CPAs)
• Consultants authorized to manage commercial registry procedures

Provided that the necessary authorization requirements are met, all of these individuals can perform the required procedures through the MERSIS system.

 

Information Required Before Applying

 

When creating a MERSIS registration, certain essential business details must be entered into the system completely and accurately. Although the required information may vary depending on the type of application, applicants are generally asked to provide the following:

• Turkish ID Number or Tax Identification Number
• Company name
• Registered business address
• Information about founders or shareholders
• Details of the company's authorized representatives

For some transactions, applicants may also need to complete chamber of commerce registration procedures or schedule an appointment with the relevant commercial registry office. Preparing all required documents in advance helps ensure a faster and smoother application process.

 

Documents Required for a MERSIS Application

 

The required documentation may vary depending on whether the application relates to company incorporation, a trade name change, or an update to company information. However, the most commonly requested documents include:

• Identification details of the founding shareholders
• Turkish ID Number or Tax Identification Number
• Company name and registered address
• Articles of Association (for corporations)
• Signature declarations of authorized representatives
• Chamber of commerce registration documents or certificate of activity
• Information regarding the company's capital structure (where applicable)

Most documents can be uploaded electronically through the system. However, certain applications may require physical submission or verification of specific documents.

 

How to Apply for MERSIS Online

 

Thanks to MERSIS, many company-related procedures can be completed online. The application process generally consists of the following steps:

1. Log in to the MERSIS portal or your e-Government (e-Devlet) account.
2. Verify your user information or create a new account.
3. Select the type of transaction (company incorporation, amendment, liquidation, etc.).
4. Enter the company's name, registered address, business activity, and shareholder information.
5. Upload the required documents electronically.
6. Submit the application for approval by the Commercial Registry Office.
7. If necessary, schedule an appointment to finalize the process.

The digital application system significantly reduces paperwork and enables many commercial registry procedures to be completed in a shorter period.

 

Is the MERSIS Application Free?

 

There is no fee for registering with or using the MERSIS system itself. However, official charges and service fees may apply for commercial registry transactions such as company incorporation, address changes, or trade name updates.

The total cost depends on the type of transaction, the legal structure of the company, and the fee schedule implemented by the relevant Commercial Registry Office.

The processing time also depends on whether the submitted documentation is complete and on the workload of the relevant registry office. Applications with complete documentation are often finalized within a few business days, while requests for additional documents or periods of high application volume may extend the processing time.

 

How to Check a MERSIS Number

 

A company's MERSIS number can be verified through several official digital platforms and public resources. By searching with the company name, tax identification number, or commercial registry details, the MERSIS number can be accessed quickly. Among the available methods, the e-Government (e-Devlet) portal and the official MERSIS portal are the most commonly used.

In addition to the MERSIS number, search results may also display information such as the company's registered name, commercial registry details, current legal status, and registered address.

 

Checking a MERSIS Number via e-Government

 

One of the easiest ways for company owners and authorized representatives to access a MERSIS number is through the e-Government (e-Devlet) platform. After completing identity verification, users can view their company records and quickly find the assigned MERSIS number.

Since no additional application is required and all information is retrieved directly from official government records, this method is widely preferred.

 

Checking a MERSIS Number via the MERSIS Portal

 

A MERSIS number can also be searched directly through the official MERSIS portal. By entering the company name, tax identification number, or commercial registry information, users can access the relevant company records.

This method is not only available to company owners but also to third parties who need to verify company information. Many verification procedures carried out by Commercial Registry Offices are also conducted through the same platform.

 

Commercial Registry Gazette and Official Documents

 

Another way to find a MERSIS number is by reviewing the company's official documents. The MERSIS number may appear in company incorporation announcements, address changes, trade name updates, and other notices published in the Commercial Registry Gazette.

In addition, the company's MERSIS number may also be included in certain banking documents, tender files, and various documents submitted to public institutions.

 

What Transactions Can Be Performed with a MERSIS Number?

 

A MERSIS number is more than just a registration number assigned to companies. It is part of a centralized digital system that enables a wide range of commercial registry transactions to be managed electronically.

Following company incorporation, transactions such as registered address changes, trade name amendments, appointment of company managers, capital increases, and changes to the company's business activities can all be initiated through MERSIS. The system also allows applications for official documents, including certified commercial registry extracts and commercial registration certificates.

MERSIS also plays a key role in more complex corporate procedures, including company liquidation, mergers, and share transfers, by ensuring that commercial records remain accurate and centrally managed.

 

Is It Mandatory to Obtain a MERSIS Number?

 

Yes. In Türkiye, obtaining a MERSIS registration is mandatory for both sole proprietorships and incorporated companies engaged in commercial activities. A company must have a MERSIS number in order to complete its commercial registry registration and carry out official procedures.

A MERSIS number may also be requested for notarial transactions, opening corporate bank accounts, participating in public tenders, and various institutional applications. For this reason, it is not merely a registration detail but a legally required identifier for businesses operating in Türkiye.

 

Conclusion

MERSIS is a centralized digital system that enables businesses to manage their commercial registry procedures electronically while providing each company with a unique official identity. From company incorporation and address changes to capital increases and commercial registry filings, numerous business processes are carried out through this platform.

For this reason, a MERSIS number is more than just an official registration number—it serves as one of the primary identifiers businesses use when interacting with public institutions. Understanding and using the MERSIS system correctly is essential for managing corporate procedures efficiently, accurately, and in compliance with applicable legislation.