Country Guide

🇬🇷 E-Invoicing in Greece

PlannedPeppol

Greece is implementing mandatory B2B e-invoicing from February 2026 in phases — large businesses (>€1M revenue) first, then all businesses from October 2026. The myDATA platform serves as the clearance system, validating invoices and assigning unique MARK/UID identifiers. B2G delivery occurs via Peppol to the KED (National Interoperability Center).

TL;DR

Greece is planning e-invoicing using mydata_xml, en_16931, peppol_bis_3_0__for_b2g_delivery_ formats. Connected to the Peppol network for cross-border exchange.

Last updated: January 2026

Quick Facts

Format

mydata_xml, en_16931, peppol_bis_3_0__for_b2g_delivery_

Next Deadline

Oct 2026

Peppol

Connected

Portal

myDATA ↗

Compliance

Mandate Status

Phase

Status

Scope

myDATA reporting

Live (Jul 2021)

All businesses (mandatory)

B2G

Live (Sep 2025)

All public contracts

B2B Phase A

Live (Feb 2026)

Large businesses (>€1M revenue in 2023)

B2B Phase B

Oct 2026

All remaining businesses

Technical Specifications

Validation enginemyDATA (clearance platform with MARK/UID assignment)

Required CIUSEN 16931 compliant myDATA XML

Government portalmyDATA (aade.gr/mydata)

PeppolYes — Peppol used for B2G delivery to KED

Accepted formatsmydata_xml, en_16931, peppol_bis_3_0__for_b2g_delivery_

Practical

Common Rejection Patterns

#1GR-R-002myDATA reporting requiredFix guide

#2GR-R-001Greek AFM (VAT number) requiredFix guide

#3GR-R-004Greek VAT category code requiredFix guide

#4GR-R-004-1When Supplier is Greek, there must be one MARK NumberFix guide

#5GR-R-003Greek invoice type code requiredFix guide

Invoice Navigator auto-remediates these at pipeline speed. See how →

View all Greece error codes

Implementation Notes

myDATA clearance workflow. Invoices are submitted to myDATA for validation, receive a unique MARK/UID, then are delivered via certified providers or the free Timologio app. QR codes on PDFs must link to the myDATA record. Tax incentives are available for companies adopting e-invoicing 2 months before the deadline: 100% equipment depreciation in purchase year and 100% deduction on e-invoice costs for the first 12 months.

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