So what is an LEI number? It is a unique 20-character alphanumeric code that identifies a company, fund, trust, or other legal entity in financial transactions. The Legal Entity Identifier is built on an international standard, so wherever it is used - in trading, reporting, or financial workflows - it provides one standardized, globally recognized way to identify the legal entity involved.
For additional reference, the Global Legal Entity Identifier Foundation publishes the authoritative overview of the identifier and the system behind it.
What Is a Legal Entity Identifier?
Here is a clear LEI definition: a Legal Entity Identifier is a unique 20-character code that identifies a legally distinct organization in financial transactions. It is built on the global standard ISO 17442 and is recognized around the world.
The most important point when you define LEI is this: it identifies the entity, not a private individual. An LEI generally identifies an organization - such as a company, a fund, or a trust - rather than a person acting in a private capacity. In some cases, individuals acting in a business capacity may also qualify.
What Does LEI Stand For?
LEI stands for Legal Entity Identifier. Three simple words that describe exactly what it does: it identifies a legal entity.
LEI, LEI Number and LEI Code Mean the Same Thing
You will see this identifier called a Legal Entity Identifier, an LEI number, or an LEI code. All three refer to the same thing. "Legal Entity Identifier" is the formal name under ISO 17442, while "LEI number" and "LEI code" are simply how people refer to it in everyday use.
So if a bank asks for your LEI code and a reporting form asks for your Legal Entity Identifier, they want the same 20-character identifier. There is no separate code to obtain for each term.
Why the LEI Exists
The LEI was created after the 2008 financial crisis. At the time, it was difficult for regulators and businesses to see clearly who was trading with whom across markets and borders. The LEI was designed to solve that problem by creating a consistent global method for identifying legal entities.
Today, the LEI is overseen by the Global Legal Entity Identifier Foundation (GLEIF) and issued by accredited Local Operating Units (LOUs).
This is one reason the Legal Entity Identifier has become such a practical tool for organizations anywhere that take part in regulated financial activity.
What Does a Legal Entity Identifier Look Like?
An LEI number is a string of exactly 20 characters that combines both letters and numbers. That mix matters - an LEI is alphanumeric, not just digits. So the LEI number meaning goes beyond a plain number; it's a structured code with a specific format.
LEI Number Example
Here is a real LEI number, so you can picture one:
506700GE1G29325QX363
This is the Global Legal Entity Identifier Foundation's own LEI, published by GLEIF.
Every LEI code is unique, and no two organizations ever share the same one. The first four characters - 5067 in the example above - identify the Local Operating Unit that issued it.
One detail is worth knowing. That prefix does not change if an entity later moves its record to a different issuer, because the 20-character code itself never changes. So the prefix tells you which issuer created the record originally, not necessarily which one maintains it today.
TNV LEI's issuer prefix is 9269, so every new LEI we issue begins with it.
How the 20 Characters Are Structured
The LEI code isn't random. Under the allocation scheme used across the Global LEI System, each part has a defined role:
- Characters 1-4: a prefix allocated uniquely to the LEI issuer, so no two issuers can generate the same code
- Characters 5-6: two reserved characters set to zero
- Characters 7-18: the entity-specific part, assigned by the issuer
- Characters 19-20: two check digits, calculated under ISO/IEC 7064 (MOD 97-10)
A small number of codes issued before this scheme came into effect, including some of the earliest LEIs assigned in 2012, do not follow the prefix-and-zeros pattern.
Those last two characters do real work. They are calculated from the rest of the code under ISO/IEC 7064 (MOD 97-10), the algorithm ISO 17442 specifies, so a mistyped LEI fails the check immediately - which is why an LEI can be validated before it is ever looked up.
So if someone asks "what is LEI code" or "what is an LEI," you can explain that it's a structured, 20-character alphanumeric ID that belongs to one organization and is never reused.
What Information Does a Legal Entity Identifier Contain?
An LEI is more than the code itself. It connects to a public data record with useful details about the organization, and anyone can look it up for free.
That record usually holds two levels of information:
- Level 1 data ("who is who"): the entity's legal name, registered address, country, registration authority, and status
- Level 2 data ("who owns whom"): information about the entity's reported direct and ultimate accounting-consolidating parent relationships, where applicable
That word matters. Level 2 records parent relationships defined by accounting-consolidation criteria - it is not a beneficial-ownership or UBO register, and it does not identify every owner or controller behind an entity.
This open, easy-to-access data is a big part of what makes the LEI valuable. When you search an LEI number, you can pull up this information in seconds.
What Is an LEI Number Used For?
This is one of the most common questions people ask: what is an LEI number used for? The short answer is identification, reporting, and trust.
Identifying Organizations in Financial Transactions
The LEI answers one question instantly: who is this entity? It works across borders, so a company in one country and a partner in another can identify each other clearly and reliably, without relying on how a legal name is spelled in each jurisdiction.
Regulatory Reporting
Financial-market rules and reporting regimes in many jurisdictions require relevant entities to be identified using an LEI. Derivatives and securities reporting regimes are the most common trigger, and the identifier also appears in fund reporting, payment messaging and supervisory data collection. The specific obligations differ by country, so the practical question is which regimes your entity falls under rather than whether an LEI is universally mandatory.
Trust and Transparency
An LEI helps banks, partners, and counterparties check standardized identity and reference data for a legal entity. That builds confidence quickly and makes doing business smoother.
How an LEI Number Fits Into the Global LEI System
Every LEI belongs to one connected global system. At the top is GLEIF, the Global Legal Entity Identifier Foundation. GLEIF oversees the system and maintains the global directory of every LEI. Accredited Local Operating Units then issue the LEIs to entities that request them - TNV LEI is one of those accredited issuers.
Together, they keep the data reliable, public, and consistent worldwide. If you'd like to explore the terms you'll come across, the LEI terminology glossary is a helpful next stop.
Who Issues an LEI Number?
LEI numbers are issued by GLEIF-accredited organizations called Local Operating Units, usually shortened to LOUs. GLEIF sets the standard and accredits the issuers, but it does not assign LEI numbers to entities itself.
Three layers sit behind every LEI, and each does a different job:
| Layer | Role |
|---|---|
| Regulatory Oversight Committee (ROC) | A group of public authorities from around the world that provides regulatory oversight of the Global LEI System. |
| GLEIF | Manages the Global LEI System, maintains the global index of every LEI, and accredits the organizations permitted to issue them. |
| Local Operating Units (LOUs) | Accredited issuers. They validate an entity's details against authoritative records, assign the LEI number, publish the record, and maintain it through renewals. |
So an organization does not apply to GLEIF for an LEI. It applies to an accredited LOU - TNV LEI among them - which carries out the validation, assigns the identifier and maintains the record, all within the framework GLEIF governs.
Accreditation is what separates an issuer from any other service provider. Before an organization can issue LEI numbers, GLEIF reviews how it validates entity data and maintains records against the standards the system requires. That review is why LEI data can be relied on by regulators rather than treated as self-declared information.
This is also why the first four characters of any LEI identify the organization that issued it. TNV LEI is a GLEIF-accredited Local Operating Unit, so every LEI number we issue begins with 9269.
One distinction is worth knowing. Alongside accredited issuers you will find registration agents - organizations that help entities apply but are not accredited to issue LEI numbers themselves. They pass applications to an LOU. It is a legitimate role, but a different one, and it is worth knowing which you are dealing with.
Because TNV LEI issues directly rather than passing applications on, the validation and the issuance happen in the same place. Our guide to what an LEI issuer is goes further - covering Managing LOUs, how to confirm an issuer's accreditation, and what happens when an LEI moves between issuers.
Next Steps After Understanding the LEI
Look Up an Existing LEI
You can search an LEI number and view its public record in moments.
Book an LEI Number for Your Organization
You can register an LEI number with TNV LEI or learn how to get an LEI through a simple, step-by-step process. As a GLEIF-accredited Local Operating Unit, TNV LEI issues official LEI numbers that are fully recognized in the Global LEI System.