How is the IBAN structured?

• the first two alphabetic characters indicate the country where the account is held
• for Greece, these characters are GR
• the two following characters are check digits that validate whole IBAN
• last part of the IBAN is the Basic Bank Account Number (BBAN), which contains identification of the Bank, the Branch and the Customer’s Account Number.

For example: In Greece, the BBAN consists of:

1. The Bank’s code (3 digits)
2. The Branch’s code (4 digits)
3. The customer’s Account Number (16 digits)

So, in Greece the BBAN is: 01101250000000012300695

This number can be converted to IBAN, by prefixing the country’s code and the two check digits before the BBAN as follows:

GR: country’s code

16: check digits

01101250000000012300695: Basic Bank Account Number (BBAN)

Finally, the IBAN is fixed: GR1601101250000000012300695.

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