Steps to validate an IBAN
There are two different validations that can be performed to ensure an UK IBAN is correct.
- 01First validation is done using the IBAN's Check Digits using the MOD97 algorithm.
- 02Second layer of validation can be carried out on the domestic sort code and account number combination
- 03Match the sort code against our Bank and Branch code directory to check if it exists
Found the correct IBAN, What to do next
With a Greek IBAN in hand, complete these final steps.
- 01Verify the registered beneficiary name. Verification of Payee applies across the eurozone, Greece included.
- 02SEPA transfers need only the IBAN. For inbound payments from outside SEPA, pair it with the BIC.
- 03Choose between SEPA Credit Transfer (standard) and SEPA Instant Credit Transfer (sub-10 seconds, 24/7, mandatory for eurozone PSPs from October 2025).
- 04Confirm the account holds EUR. Greek banks support multi-currency accounts for international clients.
- 05For first-time beneficiaries, send a small test transfer and reconcile before scaling up.
Common transfer mistakes to avoid for Greece
Exact beneficiary name
Must match bank records exactly to avoid rejection or delays
Correct SWIFT/BIC code
Ensures the payment routes to the right bank.
Currency match
Sending the wrong currency can trigger extra fees or failed transfers.
Active account details
Outdated or inactive accounts can result in returned payments.
IBAN Rules in Greece
- 01IBAN is mandatory in Greece for every domestic and SEPA credit transfer.
- 02The 27-character Greek IBAN begins with GR, two check digits, a 3-digit bank code, a 4-digit branch code, and a 16-character alphanumeric account identifier.
- 03Legacy domestic formats are embedded inside the IBAN and are not used standalone. Greece has been in the eurozone since 2001 and is a full SEPA member. The same IBAN works for domestic Greek payments and across all 36 SEPA countries. DIAS is the central Greek interbank clearing operator, handling both SEPA and Greek-specific instructions under Bank of Greece supervision.
Greece Payment Schemes
Greece operates within Eurosystem rails, with DIAS playing a central role in domestic retail clearing.
- 01T2, Eurosystem with Bank of Greece as participant, RTGS for high-value euro.
- 02DIAS, Greek interbank clearing house, operates SCT, SCT Inst, SDD, and domestic interbank instructions under Bank of Greece supervision.
- 03TIPS, Eurosystem, pan-European instant payment settlement.
- 04SEPA Credit Transfer (SCT), pan-European EUR credit transfer.
- 05SEPA Instant Credit Transfer (SCT Inst), 24/7 instant EUR transfers, mandatory from October 2025.
- 06SEPA Direct Debit (SDD), recurring euro direct debits.
- 07Visa and Mastercard card schemes.
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Disclaimer
This tool is provided for informational purposes only. Xflow does not guarantee the accuracy or completeness of results. Always verify account details directly with your bank or beneficiary before initiating any transfer. Xflow is not liable for any losses arising from incorrect IBAN usage.
Last Reviewed: 26/05/2026