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Greek Tax Authority Delays Mandatory B2B E-Invoicing Launch to March 2026

The Greek Public Revenue Authority (AADE) has announced a significant update regarding the rollout of mandatory B2B e-invoicing. Originally scheduled for February 2026, the launch has now been postponed to March 2, 2026.

This alteration facilitates an initial two-month soft launch aimed at ensuring a smooth transition for the estimated 38,000 mandated businesses, all of which must complete their migration to the new system by May 2, 2026.

Details of the Delay

The decision to delay the launch stems from the need to provide additional time for companies to adapt to the new requirements, particularly those that process significant volumes of transactions. The initial phase will target large resident businesses with an annual turnover exceeding €1 million, specifically focusing on domestic transactions and exports outside the EU. It is worth noting that, while the e-invoicing mandate applies to these transactions, the use of e-invoicing remains optional for businesses dealing with EU customers.

Phase 2 Implementation

Following the completion of the first phase, AADE plans to implement a second phase starting in October 2026. This phase will expand the e-invoicing mandate to include all other resident taxpayers, marking a significant step towards digitizing the invoicing landscape in Greece.

Updated Penalty Regime

In addition to the timeline changes, the Greek Tax Authority has introduced an updated penalty regime to reinforce compliance. While details of the penalties have yet to be fully disclosed, businesses should prepare for a stricter enforcement mechanism as the e-invoicing system takes effect.

How Can KGT Support You?

KGT has created an SAP-integrated e-invoicing add-on solution for Greece, featuring outbound and inbound functionalities to meet tax reporting requirements. This add-on includes a data extractor and a cockpit for generating periodic electronic invoices in the legal format and controls before submission. When SAP DRC launched the Greek e-invoicing solution as part of its e-document offerings, KGT emerged as a leading consultancy firm for SAP DRC and tax services. Recognized as an SAP DRC partner for Greek e-invoicing services, KGT is one of SAP's recommended implementation partners for this solution. We provide comprehensive support, including installation, configuration, customization, and training, to help you maximize the long-term value of your SAP DRC investment.

KGT is an SAP partner for PE services and an SAP Build partner, and to become an SAP partner, strict due diligence requirements must be met, including having certified SAP consultants. You can find us at: https://partnerfinder.sap.com/profile/0001925409

 

Country update for Greece
18 February 2026
Stay informed about the latest indirect tax developments in Greece, including regulatory changes, compliance requirements, and indirect tax guidance affecting businesses operating locally and cross-border. This page provides a structured overview of country-specific updates, such as new legislation, reporting obligations, digital tax initiatives, and implementation timelines.
These insights help tax, finance, and compliance professionals anticipate regulatory changes, adjust processes and systems, and maintain compliant operations in Greece.