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IBAN formats by country

Ireland IBAN Format (IE)

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An Ireland IBAN has 22 characters: IE, two check digits and an 18-character national account number (BBAN), which contains a 4-character bank code.

Length
22 characters
IBAN structure
IE2!n4!a6!n8!n
Bank code length
4 characters
Example
IE29 AIBK 9311 5212 3456 78

Ireland IBAN structure

After the country code and check digits, the BBAN is 4 upper-case letters, then 6 digits, then 8 digits.

PartIn the exampleWhat it is
Country codeIEISO 3166 code of the country
Check digits29Two digits from the ISO 7064 MOD 97-10 calculation
Bank codeAIBK4 characters, national bank identifier
Branch code9311526 characters, branch identifier
Account number12345678The rest of the BBAN, including any national check digits

The example is the sample IBAN given for this country in the IBAN registry, not an account to pay. Structure notation: n digits, a upper-case letters, c letters or digits; 4!n means exactly four digits.

Check an Ireland IBAN

Questions

How many characters does an Ireland IBAN have?
22 characters: the country code IE, two check digits and a BBAN of 18 characters.
What does an Ireland IBAN look like?
For example IE29 AIBK 9311 5212 3456 78 on paper, or IE29AIBK93115212345678 in electronic form.
Where is the bank code in an Ireland IBAN?
The national bank code has 4 characters, at positions 5 to 8 of the IBAN.
How do I check an Ireland IBAN?
Paste it into the IBAN checker on this site. It tests the length, the structure and the check digits in your browser.

Other countries with 22-character IBANs

All IBAN countries

Formats from the IBAN Registry (release 99, December 2024) that Swift publishes as the ISO 13616 registration authority, read from public mirrors of the registry. Check the current registry before relying on a format.