Greece
e-Invoicing Mandate

This guide provides an overview of e-Invoicing requirements in Greece, including the legal framework, the use of the MyData platform, compliance obligations, and key reporting considerations. It is intended to assist businesses that issue or receive invoices for transactions subject to VAT in Greece. 

Groupe 427320837.png

administration fiscale

Independent Authority for Public Revenue (AADE), General Secretariat of Information Systems

Date de mise en service du mandat

2 March 2026

Signature numérique

Not Required

Archivage

Obligatoire - 5 ans

Format de la facture

e-Invoicing: PEPPOL

Real time reporting: MyDATA

Greece introduced mandatory B2G e-invoicing in line with EU Directive 2014/55/EU, requiring structured EN 16931-compliant invoices to public authorities via the Peppol network. The framework is governed by Joint Ministerial Decisions and supervised by the Independent Authority for Public Revenue (AADE). In parallel, Greece implemented the MyDATA digital platform, a real-time reporting system requiring businesses to transmit transactional data electronically for VAT transparency and fraud prevention. From 1 January 2024, real-time reporting of sales invoices became mandatory. A phased mandatory B2B e-invoicing regime applies from 2 March 2026, marking Greece’s transition toward broader digital VAT control.

Détails du mandat
Statut du mandat
Screenshot 2026 03 25 at 04.59.40.png

Effective: 2 March 2026

Greece’s e-Invoicing mandate is fully active.

Quels types de transactions doivent être déclarés via e-Invoicing?

B2G

Domestic and cross-border public procurement transactions (above threshold)

B2B

All domestic sales of goods and services (from 2026), Transactions with businesses in third (non-EU) countries, EU B2B transactions – optional issuance.

Real-time reporting (MyDATA)

B2G, B2B and B2C. Domestic and cross-border (including exports, imports, intra-community supplies).

Existe-t-il des seuils qui déterminent e-Invoicing ?

B2G:
Not required for public contracts ≤ €2,500 (excl. VAT)
General government expenses ≤ €2,500 exempt
Defence/security classified contracts excluded
B2B:
Period A (Large enterprises – 2023 revenue > €1 million):
Start: 2 February 2026
Period B (All other businesses):
Start: 1 October 2026
Real-time reporting: No threshold

What are the implementation dates of the e-Invoicing mandate?

Type de transaction
12 Sep 2023
13 Sep 2024
1 Jan 2025
1 Jun 2025
1 Sep 2025
2 Mar 2026
1 Oct 2026
2030 (EU ViDA)
Local - B2G (Public)
*
Local - B2B (national)
**
Local - B2C (marché national)
Rapports locaux et transfrontaliers
Étranger - B2B/B2C (non établi)
**
Exigence obligatoire en vigueur
*
Initial B2G phase (specified major ministries only)
**
Large enterprises only (> EUR 1 million gross revenue, tax year 2023)
Non obligatoire
Do I need to have a permanent establishment in Greece to be required to e-Invoice?

No. The B2B mandate applies to all taxpayers with local, B2B sales. There is no distinction based on establishment. Foreign suppliers selling to Greek public authorities must comply with B2G e-invoicing. Foreign digital service providers must comply if they have a permanent establishment in Greece.

B2G:
Suppliers (local or foreign) issuing invoices to Greek public authorities must comply with B2G e-invoicing rules. Foreign suppliers without Greek VAT registration must issue via a certified Peppol access point.
 
B2B (Domestic):
Mandatory for businesses operating in Greece. Applies to taxable persons engaged in domestic transactions.
 
B2B (Cross-border):
Sales to third (non-EU) countries – e-invoicing applies.
 
Sales to EU businesses: 
Issuance optional; alternative formats allowed if recipient does not accept e-invoice.
 
Real-time reporting (MyDATA):
Applies to all taxable and established persons in Greece for B2G, B2B, and B2C transactions (domestic and cross-border).
Invoice must be issued at time of supply (or before 15th of following month if dispatch note used). Reporting to MyDATA must occur in real time.

Failing to Issue a Required E-Invoice: Treating it like no invoice at all (e.g., using paper after the 2026 cutoff). Penalties will arise in this instance.

Exempt/non-taxable deals: €500 flat fine (single-entry books) or €1,000 (double-entry books) per unissued invoice per audit.

e-Reporting Failures (Not Reporting/Transmitting Data): • Unreported invoices: 10% of transaction value, max €1,000 per invoice per day. • Late reports: 5% of transaction value. • Under-reported amounts: 5% of the unreported figure.

Other Violations: Fixed €250/€500 fines per tax period for not sending accounting docs. Repeat offenses double or quadruple penalties.

Steps VAT IT can assist with

1. Register and ensure system connectivity to the myDATA platform for real-time invoice reporting.
2. Choose a compliance method, either through a Certified Electronic Data Issuing Provider or through AADE tools such as Timologio or myDATAapp.
3. Ensure systems can generate the required formats: EN-compliant format and Peppol BIS 3.0 GR CIUS for B2G, and UBL 2.1 GR for B2B clearance.
4. Implement real-time reporting functionality so invoice data can be transmitted to myDATA, validated, and assigned a MARK identifier, with the required QR code included before the invoice is sent to the customer.
5. Ensure the business can receive and accept domestic B2B e-invoices once the B2B mandate applies.
6. Implement compliant archiving for at least five years.

In summary

eezi can assist by connecting the client’s systems to the relevant Greek e-invoicing and reporting flows, helping generate structured invoice data, and supporting transmission to myDATA for real-time reporting and validation.
 
For B2G, eezi can help prepare and transmit invoices through the required provider and Peppol-based framework, including the steps needed for myDATA registration, MARK assignment, formatting according to European and Greek specifications, submission through the Peppol network, and status message handling.
 
For B2B, eezi can support compliant invoice generation and reporting through the applicable clearance/reporting process, including structured data preparation, transmission, validation response handling, and downstream archiving support.
Accédez à nos derniers blogs.

Votre plateforme de référence pour les actualités, les réflexions de leaders d'opinion et les guides pratiques sur la récupération de la TVA, la conformité en matière de TVA et de taxe sur les ventes, et la facturation électronique.

August 18, 2026

EDI vs E-Invoicing: What’s the Difference and Which Does Your Business Need?

EDI vs E-Invoicing: What’s the Difference and Which Does Your Business Need? Both EDI and e-Invoicing move structured transactional data electronically between businesses. On the surface they look similar. In practice they serve different purposes, operate through different mechanisms, and carry very different compliance implications depending on where your business operates. Understanding the distinction is […]

August 11, 2026

Oman’s e-Invoicing Rollout Just Changed: Updated Timeline for 2026 and 2027

Oman’s e-Invoicing Rollout Just Changed. Here Is the Updated Timeline. On 9 August 2026, Oman’s Tax Authority issued Decision No. 189/2026, adjusting the phased rollout of its mandatory e-Invoicing programme and providing more clarity in respect of the affected taxpayers. The dates have moved. The direction has not. What Changed Phase Who It Covers Previous […]

July 16, 2026

VAT in the Digital Age (ViDA): The Complete Guide to the EU’s VAT Reform

VAT in the Digital Age (ViDA): The Complete Guide to the EU’s VAT Reform VAT in the Digital Age, better known as ViDA, is the European Union’s biggest overhaul of VAT rules in a generation. After nearly two years of political deadlock, the reform is no longer a proposal, it is enacted EU law, with the first major deadlines within the […]

Août
18
WEBINAIRE
eezi by VAT IT is now a UAE Pre-Approved e-Invoicing Provider. Join us and SAP Concur on 23 July to find out what the mandates mean for your business.
Août
18
WEBINAIRE

Ce webinaire explique comment les entreprises américaines peuvent identifier et récupérer la TVA étrangère, en détaillant des concepts clés tels que la réciprocité et en mettant en évidence les occasions de remboursement souvent manquées.