Working ahead of Greece’s myDATA and upcoming B2B e-invoicing requirements with Global E-invoicing Compliance (GEC)

Greece’s e-invoicing landscape is evolving fast. With myDATA already driving real-time reporting, and mandatory B2B e-invoicing approaching, you need a setup that keeps finance, tax, and IT aligned without adding more portals and country-specific workarounds.

With Global E-invoicing Compliance, ecosio is building Greece support so you can manage compliance through one platform.

Timeline

Greece’s B2B mandate is expected to roll out in phases:

• 2 February 2026: Mandatory B2B e-invoicing for large companies with revenues exceeding EUR 1 million in the 2023 fiscal year

• 1 October 2026: Mandatory B2B e-invoicing for all other businesses

ecosio roadmap

Greece is on our roadmap for 2026, with a current target for availability in Q1 2026. This is a target date, and we will keep you informed as technical and operational details are clarified.

The Greek mandate has an added level of complexity as compliance is not only about producing a structured invoice. It is about reporting, identifiers, delivery channels, and the operational reality of handling exceptions at scale.

That is why ecosio is building Greece support as a single, end-to-end flow under Global E-invoicing Compliance.

What ecosio provides in Greece (GEC):

• Connect your ERP once and orchestrate the end-to-end Greece process

• Validate invoice data, monitor statuses, and manage exception handling through one platform and service model

• Report invoice data to myDATA, obtain the MARK, and deliver invoices to your customer through the required channel, including email for B2B and Peppol for B2G

What you can expect

With this approach, you can:

• Reduce manual intervention,

• Keep reporting and delivery consistent,

• Avoid building a bespoke Greece solution in-house

What to do next

If Greece is on your roadmap, start planning now so you are ready for the February 2026 milestone.

For more context, visit our Greece e-invoicing page. If you want to discuss your scope (B2G, B2B, and myDATA alignment), get in touch with ecosio.

The ecosio Product team