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IBAN Structure Ireland

Last reviewed: · Source: ISO 13616 / SWIFT IBAN Registry

Ireland's IBAN has 22 characters in the format IEkk BBBB SSSS SSCC CCCC CC. It begins with IE, two check digits, a 4-letter bank code (e.g. AIBK for AIB, BOFI for Bank of Ireland), the traditional 6-digit sort code and the 8-digit account number. For payments from EU/EEA banks to Ireland, required routing details depend on the bank, currency and route; check them in advance with your bank. Ireland exposes the sort code directly as part of the IBAN.

Structural fields are based on the official SWIFT IBAN Registry. The editorial method and validation boundary are documented on our German editorial page (German).

Overview

CountryIreland (IE)
IBAN length22 characters
FormatIEkk BBBB SSSS SSCC CCCC CC

Visual breakdown

Fictitious format example, not payment data:

IE29AIBK93115212345678
Country codeCheck digitsBank codeSort codeAccount number

Character-by-character explanation

SegmentCharactersLengthExplanation
Country codeIE2IE for Ireland (ISO 3166-1)
Check digits292Two check digits per MOD-97
Bank codeAIBK44-letter bank code (e.g. AIBK, BOFI)
Sort code93115266-digit sort code (Irish bank/branch code)
Account number1234567888-digit account number

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Frequently asked questions

How do I check the length of an IBAN from Ireland?
Remove spaces and count 22 characters. The first two characters are IE; the remaining positions follow IEkk BBBB SSSS SSCC CCCC CC. A different length is formally invalid for this country format.
What do the check digits in a Ireland IBAN mean?
The two check digits are calculated from the complete IBAN using ISO 7064 MOD-97. They help detect format and transcription errors. A passing checksum does not confirm that an account exists or identify its account holder.
What should I do when an IBAN is formally invalid?
Check the country code, character count, letters and digits, and the check digits. Compare the entry with your bank records or ask the bank for the correct IBAN. This checker validates structure and checksum; it does not verify account ownership or payment approval.

IBAN structure for other countries

Germany

22 characters · DEkk BBBB BBBB CCCC CCCC CC

Austria

20 characters · ATkk BBBB BCCC CCCC CCCC

Switzerland

21 characters · CHkk BBBB BCCC CCCC CCCC C

Liechtenstein

21 characters · LIkk BBBB BCCC CCCC CCCC C

France

27 characters · FRkk BBBB BGGG GGCC CCCC CCCC CKK

Spain

24 characters · ESkk BBBB GGGG KKCC CCCC CCCC

Italy

27 characters · ITkk XBBB BBGG GGGC CCCC CCCC CCC

Portugal

25 characters · PTkk BBBB SSSS CCCC CCCC CCCK K