What is a LEI Number? The Complete Legal Entity Identifier Guide for 2026

What is a Legal Entity Identifier (LEI)?

A Legal Entity Identifier (LEI) is a 20-character alphanumeric code that uniquely identifies any legal entity participating in financial transactions anywhere in the world.

Think of it as a global barcode for businesses. Just as a product barcode identifies a specific item on a shelf, an LEI identifies a specific company in the global financial system.

The LEI is based on the ISO 17442 standard. Every LEI connects to a set of reference data that answers two fundamental questions:

• Who is who? (The entity's legal name, registered address, and formation details)

• Who owns whom? (The entity's direct and ultimate parent companies)

Unlike national identifiers that only work within one country, the LEI works across all 195+ jurisdictions. A compliance officer in Singapore can verify a counterparty in Germany using the same system.

How the LEI Code is Structured

Every LEI follows the same 20-character format:

Example breakdown:

The structure ensures every LEI is globally unique. No two entities can share the same code, and the checksum catches typos during data entry.

Level 1 vs Level 2 Data: "Who is Who" vs "Who Owns Whom"

The LEI system provides two tiers of reference data:

Level 1 Data (Who is Who)

This is the "business card" information for every entity:

• Legal name and any trading names

• Registered address and headquarters address

• Country of formation and legal jurisdiction

• Entity status (active, inactive, merged)

• Registration date and next renewal date

• Legal form (corporation, LLC, trust, fund, etc.)

Level 2 Data (Who Owns Whom)

This reveals corporate ownership structures:

• Direct parent entity (immediate owner)

• Ultimate parent entity (top of the ownership chain)

• Subsidiary relationships (entities owned by the LEI holder)

• Percentage of ownership where disclosed

Level 2 data is what makes the LEI system powerful for compliance. It allows you to trace ownership across borders and through complex corporate structures—something impossible with national registries alone.

Why Was the LEI Created?

The 2008 financial crisis exposed a critical gap: there was no way to identify counterparties consistently across the global financial system.

When Lehman Brothers collapsed, regulators couldn't quickly determine which institutions had exposure. Different countries used different identification systems. The same entity might appear under multiple names across jurisdictions. Risk calculations were impossible at the speed the crisis demanded.

The timeline of LEI development:

Today, more than 2.5 million LEIs have been issued to entities in over 225 countries and territories. The system processes millions of verification requests daily.

Who Needs an LEI?

The short answer: any legal entity that trades financial instruments, reports to regulators, or operates in regulated financial services.

The longer answer depends on your jurisdiction and business activities.

LEI Requirements in the EU (MiFID II, EMIR, SFTR)

The European Union has the most comprehensive LEI mandates:

MiFID II / MiFIR (since January 2018)

Any entity trading securities or derivatives on EU-regulated markets needs an LEI. This includes:

• Investment firms executing or reporting trades

• Corporate clients of EU brokers and banks

• Non-EU entities trading with EU counterparties

• Funds, trusts, and pension schemes making investment decisions

The rule is absolute: No LEI, no trade. EU investment firms cannot execute transactions for clients who lack a valid LEI.

EMIR (European Market Infrastructure Regulation)

All counterparties to derivative contracts reported to EU trade repositories must have an LEI. This covers:

• OTC derivatives (swaps, forwards, options)

• Exchange-traded derivatives

• FX forwards (with limited exceptions)

SFTR (Securities Financing Transactions Regulation)

Since July 2021, entities involved in securities financing transactions (repos, securities lending, margin lending) must be identified by LEI in transaction reports.

LEI Requirements in the US (Dodd-Frank, SEC, CFTC)

US requirements are sector-specific but expanding:

CFTC (Commodity Futures Trading Commission)

• Swap dealers and major swap participants must obtain LEIs

• Counterparties to reportable swaps must be identified by LEI

• Commodity pool operators and commodity trading advisors need LEIs

SEC (Securities and Exchange Commission)

• Registered investment companies must report LEIs (Form N-PORT)

• Security-based swap dealers require LEIs

• Certain large traders may need LEI identification

Federal Reserve and FDIC

• Foreign banking organizations may need LEIs for registry reporting

• Certain insurance investment reporting requires LEI identification

LEI Requirements in UK, APAC & Other Jurisdictions

Post-Brexit, the UK onshored MiFID II and EMIR requirements. UK entities trading on UK markets need LEIs under UK MiFIR.

Asia-Pacific mandates include:

• Australia (ASIC): Derivative transaction reporting requires LEI

• Hong Kong (HKMA): OTC derivative reporting mandates LEI

• Singapore (MAS): Derivative reporting rules reference LEI

• Japan (FSA): Certain transaction reporting requires LEI

• India (RBI, SEBI): LEI required for large corporate borrowers and market participants

The trend is clear: LEI requirements are expanding globally. Even if your jurisdiction doesn't mandate LEI today, your counterparties' jurisdictions might—which effectively makes it your requirement too.

Entities That Typically Need an LEI

LEI vs Other Business Identifiers

The LEI isn't the only business identifier, but it serves a distinct purpose. Here's how it compares:

LEI vs DUNS Number

The D-U-N-S Number (Data Universal Numbering System) is a 9-digit identifier assigned by Dun & Bradstreet.

Key difference: The LEI is an open standard with free data access. Anyone can search the GLEIF database and verify an entity's identity. DUNS data requires a commercial relationship with D&B.

When you need both: Many enterprises maintain both identifiers. DUNS provides broader coverage and credit data. LEI satisfies regulatory requirements and provides verified ownership data.

LEI vs Company Registration Number

Every country has its own company registration system. In the UK, it's Companies House. In Germany, it's the Handelsregister. In the US, it's 50+ Secretary of State offices.

Key difference: Company registration numbers prove legal existence in one jurisdiction. LEIs provide a consistent identifier that works across all jurisdictions.

Practical example: A German company's Handelsregister number is meaningless to a compliance officer in Japan. But both can verify the same LEI in the GLEIF database.

LEI vs EIN / VAT ID / Tax ID

Tax identifiers serve fiscal authorities, not financial markets.

Key difference: Tax IDs are issued by revenue authorities for tax collection. LEIs are issued for financial market transparency. A company might have an EIN, a VAT ID, and an LEI—each serving different regulatory purposes.

How to Get an LEI

Obtaining an LEI is straightforward. The process typically takes 1-3 business days.

Step-by-Step Application Process

Step 1: Choose an LEI Issuer (LOU)

GLEIF accredits Local Operating Units (LOUs) to issue LEIs. You can apply through any LOU regardless of your location. Factors to consider:

• Pricing (registration and annual renewal)

• Processing speed

• Customer support quality

• Multi-year discount options

Step 2: Gather Required Information

You'll need:

• Legal name (exactly as registered)

• Registered address

• Headquarters address (if different)

• Legal form (corporation, LLC, partnership, etc.)

• Company registration number and registry name

• Direct parent entity information (if applicable)

• Ultimate parent entity information (if applicable)

Step 3: Submit Application

Complete the LOU's online application form. You may need to upload supporting documents:

• Certificate of incorporation

• Registry extract showing current status

• Evidence of registered address

Step 4: Verification

The LOU verifies your information against official sources (company registries, regulatory databases). This typically takes 24-72 hours.

Step 5: Receive Your LEI

Once verified, your LEI is published in the Global LEI Index. You'll receive confirmation with your 20-character code.

LEI Costs and Renewal Requirements

LEI pricing varies by issuer and term length:

Annual renewal is mandatory. LEI reference data must be verified at least once per year. If you don't renew:

• Your LEI status changes to "LAPSED"

• Reference data may become stale

• Some counterparties and systems reject lapsed LEIs

• You may be unable to execute trades in regulated markets

Pro tip: Set up auto-renewal to avoid lapses. Most LOUs offer this option.

GLEIF-Accredited LEI Issuers (LOUs)

Major LEI issuers include:

The full list of GLEIF-accredited LOUs is available at gleif.org. All LOUs connect to the same Global LEI Index, so your LEI works the same regardless of which issuer you use.

How to Look Up and Verify an LEI

The Global LEI Index is freely searchable. No registration or subscription required.

Using the GLEIF LEI Search

Direct search at gleif.org:

1. Go to search.gleif.org

2. Enter company name or LEI code

3. Review the reference data returned

What you'll see:

• LEI code and registration status (ISSUED, LAPSED, RETIRED)

• Legal name and any other registered names

• Registered address and headquarters

• Legal jurisdiction and entity legal form

• Registration date and next renewal date

• Direct and ultimate parent entities (if reported)

• LEI issuer (LOU) that manages the record

Status definitions:

LEI Verification for KYB and Compliance

For compliance teams processing high volumes, manual GLEIF searches don't scale. This is where LEI verification integrates with broader KYB (Know Your Business) workflows.

What enterprise verification looks like:

1. Ingest: Receive counterparty data (name, jurisdiction, LEI if provided)

2. Match: Cross-reference against LEI database and company registries

3. Verify: Confirm LEI status is ISSUED and matches entity details

4. Enrich: Pull ownership data (Level 2) to identify ultimate beneficial owners

5. Monitor: Track for status changes, lapses, or corporate events

Integration points:

• API access to LEI data (GLEIF provides a free API)

• Batch verification for onboarding pipelines

• Real-time checks during transaction processing

• Alerts for LEI status changes

Search LEI Alongside Other Business Identifiers

Global Database allows you to search and verify LEIs alongside other key business identifiers in a single platform:

• LEI — Legal Entity Identifier

• Company Registration Numbers — From 200+ official government registries

• VAT Numbers — European and international VAT validation

• EIN — US Employer Identification Numbers

• Tax IDs — Country-specific tax identifiers

This unified approach eliminates the need to check multiple databases. Instead of searching GLEIF for LEI, then Companies House for UK registration, then VIES for VAT validation—you verify everything in one lookup.

Global Database pulls LEI data and cross-references it with registry-sourced company information. This means you can confirm not just that an LEI exists, but that it matches the official company registration, current status, and address on file with government authorities.

LEI Data in Practice: Use Cases

KYB Onboarding and AML Compliance

Financial institutions use LEI as a foundational data point in customer due diligence:

During onboarding:

• Verify the entity exists and is active

• Confirm legal name matches documentation

• Identify parent companies for group-level risk assessment

• Cross-reference against sanctions and PEP databases

For ongoing monitoring:

• Track LEI status changes (lapses, retirements)

• Monitor for corporate restructuring

• Detect ownership changes via Level 2 updates

The LEI doesn't replace KYB—it accelerates it. Having a verified LEI means you're starting with confirmed reference data rather than manually validating company documents.

M&A Due Diligence and Risk Assessment

Investment banks and corporate development teams use LEI data during transactions:

Target analysis:

• Map the corporate structure using Level 2 relationships

• Identify all subsidiaries that will transfer in the deal

• Verify legal entities match the disclosed corporate family

Counterparty risk:

• Confirm all entities in a transaction chain have active LEIs

• Identify gaps where entities lack LEI coverage

• Flag unusual ownership structures for deeper review

Regulatory Reporting and Transaction Transparency

The original purpose of LEI—and still its primary use:

Transaction reporting:

• Derivatives trades (EMIR, Dodd-Frank)

• Securities transactions (MiFIR)

• Securities financing (SFTR)

Position reporting:

• Aggregate position limits (MiFID II commodity derivatives)

• Large trader reporting (SEC)

Systemic risk monitoring:

• Regulators can aggregate exposures by entity and corporate group

• Cross-border risk concentrations become visible

• Interconnectedness between financial institutions can be mapped

LEI Limitations and Disadvantages

The LEI system has clear benefits, but it's not without drawbacks. Compliance teams should understand these limitations.

Data Freshness Depends on Renewal

LEI reference data is only as current as the last renewal. If a company doesn't pay its annual renewal fee:

• The LEI status changes to LAPSED

• Reference data (name, address, ownership) is not re-verified

• The information may be months or years out of date

A lapsed LEI doesn't mean the data is wrong—it means nobody has confirmed it's still accurate. The company may have moved headquarters, changed legal name, or restructured ownership without the LEI record reflecting those changes.

The problem: Roughly 30% of LEIs are in LAPSED status at any given time. If you're relying on LEI data for due diligence, you may be working with stale information.

Annual Fee Creates Update Gaps

Unlike company registration numbers (which are maintained by government registries), LEI is a paid service. Companies must actively renew and pay fees to keep data current.

This creates a gap:

• Company registry: Updated when the company files changes (legally required)

• LEI record: Updated only if the company pays to renew

A company might file a change of directors with Companies House today, but that change won't appear in the LEI record until renewal—which could be 11 months away.

Coverage Gaps

Not every company has an LEI. The system covers primarily:

• Financial institutions

• Companies trading regulated instruments

• Entities required by specific regulations

Many small and mid-sized businesses—especially those outside financial services—have no LEI at all. If your counterparty isn't in a regulated industry, they may not exist in the GLEIF database.

Ownership Data is Self-Reported

Level 2 data (parent relationships) relies on companies self-declaring their ownership structure. While LOUs verify against available sources, complex multinational structures may not be fully captured—especially where:

• Ownership is held through nominee arrangements

• Parent entities are in jurisdictions with limited transparency

• The company chooses not to disclose relationships

What This Means for Due Diligence

LEI is a useful verification layer, but it shouldn't be your only source:

Best practice: Cross-reference LEI data with official company registry records. Registry data is updated in real-time when companies file changes—it doesn't depend on annual renewal fees. Platforms like Global Database combine LEI verification with live registry data to give you both the global identifier and the authoritative source record.

The Future of LEI: vLEI and Digital Identity

The LEI system is evolving beyond static identifiers toward verifiable digital credentials.

Verifiable LEI (vLEI)

GLEIF launched the verifiable LEI (vLEI) program to enable automated, cryptographically secure verification of organizational identity.

What vLEI adds:

• Digital credentials: LEI data packaged as verifiable credentials (W3C standard)

• Instant verification: Cryptographic proof without database lookups

• Role attestation: Verify that a person is authorized to act for an organization

• Automated workflows: Machine-readable credentials for straight-through processing

Use cases emerging:

• Digital signing of contracts with verified organizational identity

• Automated KYB where credentials verify themselves

• Supply chain verification with trusted entity identification

• Cross-border payments with embedded counterparty verification

Expanding Adoption Beyond Finance

While LEI started in financial markets, adoption is expanding:

Government procurement: Some jurisdictions require LEI for government contract bidders

Supply chain compliance: Companies verifying suppliers across global networks

Digital trade documentation: LEI as the entity identifier in electronic bills of lading and trade finance

ESG reporting: Consistent entity identification for sustainability disclosures

The vision is an LEI for every legal entity in the global economy—not just those in financial services.

Frequently Asked Questions About LEI

1. What does LEI stand for?
   LEI stands for Legal Entity Identifier. It's a 20-character code that uniquely identifies legal entities participating in financial transactions worldwide.

2. How much does an LEI cost?
   LEI costs typically range from $50 to $150 per year, depending on the issuer and term length. Multi-year packages offer discounts. Annual renewal is required.

3. How long does it take to get an LEI?
   Most LEI applications are processed within 1-3 business days. Some issuers offer expedited processing for an additional fee.

4. Do individuals need an LEI?
   No. LEIs are issued only to legal entities (companies, funds, trusts, government bodies). Individuals cannot obtain an LEI.

5. What happens if my LEI lapses?
   A lapsed LEI may prevent you from executing trades in regulated markets. Some counterparties and systems reject lapsed LEIs. Reference data becomes unverified and may be treated as unreliable.

6. Can a company have more than one LEI?
   No. Each legal entity can have only one LEI. If a company discovers duplicate LEIs, the records should be merged or retired.

7. Do subsidiaries need their own LEIs?
   Yes. Each legally distinct entity requires its own LEI. A parent company's LEI does not cover its subsidiaries.

8. Is my LEI valid in all countries?
   Yes. The LEI is a global standard. An LEI issued in any jurisdiction is valid and recognized worldwide.

9. What's the difference between LEI and DUNS?
   LEI is a global, open standard with free data access, mandated by financial regulators. DUNS is a proprietary identifier from Dun & Bradstreet with broader coverage but restricted data access. Many companies maintain both.

10. How do I check if a company has an LEI?
    Search the GLEIF database at search.gleif.org. Enter the company name or LEI code to view the reference data.

Verify Business Identity at Scale

The LEI is one piece of the entity verification puzzle. For compliance teams processing thousands of counterparties, you need more than LEI lookup—you need complete KYB verification that combines LEI status with registry data, ownership structures, and financial information.

Global Database provides LEI verification alongside company data from 200+ official government registries. Verify any entity's LEI, registration status, directors, shareholders, and financials in a single API call.