LEI Code: what it is, when it is mandatory, and how to manage it step by step

The LEI code (Legal Entity Identifier) has become an essential requirement for many companies operating in financial markets. If your company makes investments, trades derivatives, or works with financial institutions, you will most likely need one.

In this article, we explain clearly and practically what the LEI is, when it is mandatory, and how to manage it correctly (registration, renewal, and updates), from a legal and corporate perspective.

What is the LEI code?

The LEI code (Legal Entity Identifier) is a unique global 20-character identifier that makes it possible to unequivocally identify legal entities participating in financial transactions.

It is based on the international standard ISO 17442 and was promoted by the G20 after the 2008 financial crisis to improve market transparency.

In practical terms, it functions as an “international financial ID” for companies, facilitating the identification of parties involved in transactions and improving systemic risk oversight.

Its main characteristics are:

• Unique identification for each legal entity.
• International and standardized validity.
• 20-character alphanumeric structure.
• Verifiable and updated information in global databases.

 

I want more information

 

What is the LEI code used for?

The purpose of the LEI is to improve transparency in financial markets and allow regulators to identify risks more quickly and accurately.

In practice, the LEI allows:

• Identification of parties in global financial transactions.
• Reduction of systemic risk in financial markets.
• Improved traceability of investments and transactions.
• Avoidance of errors or duplication in entity identification.

Without an LEI, many transactions simply cannot be executed.

Who is required to have an LEI code?

The rule is clear: any legal entity operating in financial markets must have an active LEI.

This includes, among others:

• Commercial companies investing or financing in financial markets.
• Credit institutions and banks.
• Insurance companies.
• Investment funds and pension funds.
• Companies trading financial derivatives.
• Entities issuing or trading securities (shares, bonds, ETFs, etc.).
• Entities under financial supervision.

In practice, if a company carries out financial transactions through intermediaries, it will most likely need an LEI.

Key principle: “no LEI, no transaction”

Financial institutions cannot execute transactions if the client does not have a valid and active LEI.

Who cannot obtain an LEI?

LEIs are generally not assigned to individuals, and certain structures without legal personality may also be excluded. The LEI is designed exclusively for identifiable legal entities.

How to apply for an LEI code in Spain

The LEI is not issued directly by a traditional public authority. Instead, it is requested through accredited Local Operating Units (LOUs) within the global LEI system.

In Spain, the usual channel is the LEI Portal of the Association of Registrars.

Step-by-step registration process:

1. Apply for the LEI through the authorized portal.
2. Provide the entity’s information, such as:
   • Company name.
   • Registered address.
   • Tax identification number.
   • Registry information.
3. Verification of the information through official registries.
4. Issuance of the unique LEI code (20 characters).

Once issued, the code is registered in the global LEI database.

Validity and renewal of the LEI code

The LEI is valid for 1 year from the date of issuance.

What happens if it is not renewed?

If it is not updated annually:

• The code changes to “lapsed” status.
• Financial transactions may be blocked.
• Intermediaries may reject transactions.

Renewal:

• It must be requested every year.
• The entity’s information is reviewed and confirmed.
• The code remains in “active” status.

Changes in the company: when the LEI must be updated

The LEI is not static information. It must be updated whenever the company undergoes relevant changes, such as:

• Change of company name.
• Change of registered address.
• Mergers or acquisitions.
• Corporate restructurings.

Keeping it updated is essential to avoid operational blocks or inconsistencies in financial records.

Cost of the LEI code

Costs vary depending on the provider, but as a general reference:

• Initial registration: between €50 and €150.
• Annual renewal: usually lower than the initial registration fee.

In Spain, management through the Commercial Registry is subject to regulated fees.

How to verify an LEI code

Any company can verify an LEI free of charge through:

• The Global LEI Foundation (GLEIF) database.
• The search tools provided by the Association of Registrars.

This allows users to verify whether an LEI is active and who it belongs to.

Why is the LEI important for companies?

Beyond being a formal requirement, the LEI is a key element in international financial operations:

• It prevents operational blocks.
• It ensures regulatory compliance.
• It improves financial traceability.
• It reduces operational and regulatory risks.

The LEI code has become an essential element for any company participating in the international financial system. It is not merely a formal requirement, but a key tool for transparency, control, and legal certainty.

Proper management — registration, renewal, and updates — is essential to avoid operational interruptions and ensure regulatory compliance.

How Adlanter helps you

At Adlanter, we do more than handle formalities: we manage the ongoing corporate administration of your company, ensuring that all corporate and regulatory obligations are always up to date.

We take care of:

• LEI registration and management.
• Annual renewals.
• Updates due to corporate changes.
• Coordination with the Commercial Registry.
• Comprehensive regulatory maintenance of the company.

Avoid operational blocks and ensure your company can operate in financial markets without interruptions.

Do you need to manage your LEI or ensure your company complies with all corporate requirements?

Contact our Corporate Advisory team.