ISIN vs LEI: what’s the difference?
The difference between an ISIN and a LEI is simple:
- An ISIN identifies a financial instrument
- A LEI identifies a legal entity
ISIN = what LEI = who
Both are often required together.
Table of contents
- ISIN vs LEI differences
- What is an ISIN?
- What is a LEI?
- Comparison
- When to use each
- FAQ
ISIN vs LEI differences
- ISIN identifies a financial instrument
- LEI identifies a legal entity
They work together to ensure transparency.
What is an ISIN code?
An ISIN identifies:
- Stocks
- Bonds
- Funds
- Derivatives
12-character code (ISO 6166)
Learn more: What is an ISIN
What is a LEI number?
A LEI identifies:
- Companies
- Funds
- Financial entities
20-character code (ISO 17442)
Comparison table
| Feature | ISIN | LEI |
|---|---|---|
| Identifies | Instrument | Entity |
| Length | 12 | 20 |
| Standard | ISO 6166 | ISO 17442 |
| Renewal | No | Annual |
When do you need each?
ISIN needed when:
- issuing securities
- listing on exchange
- reporting transactions
LEI needed when:
- financial transactions
- regulatory compliance
Should you get a LEI before an ISIN?
Yes.
Some agencies require it before issuing ISIN.
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