Legal Entity Identifier Knowledge Base
Independent guides to the LEI system, registration rules, renewals, and the regulations that trigger LEI use.
Try: "MiFID II", "ISO 17442", "How to renew", "What is LOU"
Featured Guides
What is an LEI?
Learn what an LEI is, why it exists, and how the 20-character code is structured.
How to Get an LEI
See how registration works, what gets validated, and how to compare providers.
Legal Requirements
Explore global mandates like MiFID II, EMIR, and Dodd-Frank that require an LEI.
Glossary
Look up the financial and regulatory terms that appear across the LEI system.
Trust and Transparency
The Global LEI System was created after the 2008 financial crisis so firms and regulators could identify legal entities more reliably. A shared identifier makes cross-border reporting, counterparty checks, and reference-data matching easier.