Greece is digitalising its tax administration through myDATA (My Digital Accounting and Tax Application), a clearance platform managed by the AADE (Independent Authority for Public Revenue). For B2G transactions, e-invoicing is already mandatory, and for B2B the obligation is being phased in during 2026. Greece combines the Peppol network for government invoices with a national clearance system for the private sector.

The Greek government offers incentives for early adoption: businesses that switch to e-invoicing before the deadline can receive a 100% tax deduction on the cost of invoicing software.

myDATA is a clearance system. Invoices are submitted to the AADE, which validates them and assigns a unique MARK identifier. The MARK confirms that the invoice has been checked and registered by the tax authority.

The process step by step:

1. The sender creates an invoice and submits it to the myDATA platform
2. AADE validates the invoice and assigns a MARK identifier
3. The invoice with MARK is made available to the recipient
4. The recipient can accept or dispute the invoice via myDATA

All invoices in Greece must include a QR code. Through this code, the tax authority (and the recipient) can verify the invoice in the myDATA system. The QR code contains a reference to the MARK identifier.

For B2G transactions, Greece uses the Peppol network. The Greek Peppol Authority is the GGDE (General Government Digital Governance Secretariat). Invoices to the Greek government are sent via Peppol, with a Greek CIUS (Country Implementation Specification) that complies with the EN 16931 standard.

For B2B transactions, clearance takes place through the myDATA platform. Peppol is not used as the primary channel here, although the technical infrastructure is available.

The penalties for non-compliance are steep:

• 50% of the VAT amount on invoices that are not submitted in accordance with the e-invoicing rules
• The penalty applies per invoice, which quickly leads to significant amounts for larger volumes

eConnect supports e-invoicing to Greece in the following ways:

• B2G via Peppol: invoices to Greek government bodies are automatically routed via the Peppol network. eConnect ensures the correct formatting according to the Greek Peppol CIUS
• Advice for B2B: the B2B obligation via myDATA requires a connection with the national clearance platform. eConnect can advise you on the requirements and possible integration routes

For cross-border invoices from the Netherlands to Greek government institutions, Peppol is the standard route. For B2B invoices to Greek businesses, it is important to take into account the myDATA clearance obligation on the recipient's side.

Want to learn more about invoicing to Greece via eConnect? Get in touch with our team.

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