How to e-invoice the Greek Public Sector via Peppol

The new obligation for suppliers to the Greek Public Sector

Starting from June 1st, 2024, all suppliers invoicing Greek public sector entities must submit their invoices electronically through the Peppol network, using the official GRCI format. This mandate applies equally to companies based inside and outside of Greece.

The goal is simple: to create a standardized, transparent, and efficient way for public entities in Greece to receive and process invoices, aligned with European standards. If your company provides goods or services to a Greek ministry, municipality, hospital, or any public organization, you are affected by this new rule. Your business can comply easily and securely, with Oxygen Peppol AP service.

What is Peppol and what is GRCI?

Peppol (Pan-European Public Procurement On-Line) is a standardized, secure network used by European governments to receive electronic invoices from suppliers. It ensures compatibility across different countries and software systems.

GRCI (Greek CIUS) is the specific invoice format that must be used when invoicing Greek public bodies via Peppol. It follows the EN 16931 European standard but includes localized rules and fields required by Greek authorities (AADE).

Who is affected by the new regulation?

The new e-invoicing requirements apply to:

• Companies based in any EU member state
• Companies based outside the EU
• Suppliers with or without a permanent establishment in Greece

Good to know: You do not need a Greek VAT number to invoice the Greek public sector — you can use your existing EU or international VAT/tax ID.

Oxygen Peppol Access Point solution

At Oxygen Pelatologio, we offer Oxygen Peppol AP — the only certified Greek Peppol Access Point specifically serving foreign suppliers who invoice Greek public entities.

With Oxygen, you can:

• Submit compliant invoices without registering for a Greek VAT number
• Send invoices easily by email — no technical setup required
• Get full GRCI format compliance without worrying about technicalities
• Receive confirmation of invoice delivery and processing status

We make invoicing the Greek public sector simple, legal, and secure.

Why choose Oxygen?

• Certified Peppol Access Point registered in Greece
• Fully compliant with European (EN 16931) and Greek regulations
• Direct connection to IAPR and Greek public entities
• Support in English and Greek
• Experience working with international companies

How to get started

1. Contact us through [email protected] or through our website.
2. Send us your invoice (PDF, XML, or system export).
3. We validate, convert, and transmit it via Peppol.
4. You receive full confirmation when ready.

If your company will be invoicing the Greek government, Oxygen Peppol AP is your trusted, certified partner. Contact us to enable compliant invoicing and avoid disruptions to your business.

Contact us: [email protected]
Learn more: www.pelatologio.gr/peppol-access-point.php?language=en