Electronic Invoicing Greece

The Indicom service for greek e-invoices

Electronic Invoicing in Greece is part of the broader European digitalization process and is built around the central myDATA platform, which is used for invoice validation and tax reporting.

As of September 1, 2025, B2G e-invoicing is fully mandatory: all invoices issued to Public Administration entities must be validated through myDATA and then transmitted via the Peppol network in the Peppol BIS 3.0 (Greek CIUS) format.

For B2B transactions, the mandate will be rolled out in two phases: from February 2, 2026 for large companies (annual turnover above €1M) and from October 1, 2026 for all businesses. This model also follows a clearance approach, with the assignment of a unique MARK identifier after validation by myDATA.

Companies may use certified service providers or the free Timologio application made available by AADE. Some details regarding B2B invoice delivery—whether through a structured electronic format or via PDF/paper with a QR code—are still being defined.

The invoice retention period is 6 years.

For more information, visit The Invoicing Hub website.

Electronic invoicing Greece: the service

The e-invoicing service will provide our customers with the tools they need to send us documents, including a specific portal for each country where they can fill in the invoice fields, upload documents, and then receive and view the various documents sent and received.
Indicom will also validate active invoices in accordance with specific regulations, send documents to the exchange systems of the various countries, and store them in accordance with the law.
During the first half of 2025, there are also plans to release several additional features for supplier invoice management, which will allow customers to:

Consult supplier invoices, orders, and transport documents on the portal, creating virtual files.

Perform manual or automatic reconciliation between these documents to check for errors.

Use a workflow for both error-free invoices and those with anomalies.

Allow your suppliers access to check the status of their invoices.

Why rely on e-Invoicing in Greece in outsourcing?

Intermediary profession

Standard management and single supplier to interface with.

Compliance with regulations

Full compliance with the regulations currently in force.

Scalability

Scalability and reproducibility of the international e-Invoicing model across multiple countries.

Improving relations

Improving relations with customers and suppliers.