×
Startup Support Program
Free AWS Credits · Dedicated Cloud Architect · Limited Seats
Trusted Digital Transformation Partner
E-invoicing in Greece requires domestic B2B invoices to be issued as structured electronic documents through the myDATA platform, using EN 16931 via myDATA. Greece's B2B e-invoicing mandate went live for large enterprises on 2 March 2026 — resident companies with revenues above EUR 1 million in 2023 — with a gradual implementation window running from 2 March to 3 May 2026. All other resident taxpayers are mandated in phase 2 from 1 October 2026, with an adjustment period to 31 December 2026 during which existing accounting or ERP software may continue to run alongside. The legal foundation is Council Implementing Decision (EU) 2025/502, published on 25 February 2025, authorising Greece to derogate from Articles 218 and 232 of Directive 2006/112/EC, running from 1 July 2025 until 31 December 2027. Invoices must follow EN 16931 and be transmitted through the myDATA platform, the timologio application, or certified service providers. Whatever the local mechanism, the invoice still has to come out of your ERP correctly — and in our experience that is where projects actually succeed or fail. ROSTAN builds the integration into Oracle EBS and Fusion Receivables so compliance is generated from the invoice the business already raises.
Dates reported from published guidance. Confirm your own obligation with your tax adviser — ROSTAN implements the ERP integration and does not provide tax or legal advice.
Greece's B2B e-invoicing mandate went live for large enterprises on 2 March 2026 — resident companies with revenues above EUR 1 million in 2023 — with a gradual implementation window running from 2 March to 3 May 2026. All other resident taxpayers are mandated in phase 2 from 1 October 2026, with an adjustment period to 31 December 2026 during which existing accounting or ERP software may continue to run alongside. The legal foundation is Council Implementing Decision (EU) 2025/502, published on 25 February 2025, authorising Greece to derogate from Articles 218 and 232 of Directive 2006/112/EC, running from 1 July 2025 until 31 December 2027. Invoices must follow EN 16931 and be transmitted through the myDATA platform, the timologio application, or certified service providers.
EDICOM — Greece mandatory B2B e-invoicing via myDATAPhase 1 captures resident companies with revenues above EUR 1 million in 2023 — a historic year, not the current one. Your obligation date was fixed by a figure already in your filed accounts.
Greece already ran myDATA for digital tax reporting, so e-invoicing extends an existing platform rather than introducing a new one. If your myDATA submissions are already imperfect, e-invoicing will expose it.
Phase 1 had a run-in from 2 March to 3 May 2026; phase 2 has one from 1 October to 31 December 2026, during which existing software can run alongside. Those windows are for transition, not for starting.
Greece operates under an EU derogation running to 31 December 2027, after which ViDA changes the legal basis. Build for the requirement, not for the temporary permission that currently underpins it.
Statutory e-invoicing is the single largest workload on our own Oracle service desk. These are the causes we see behind rejections, wherever the mandate is.
Tell us which entities are in scope and what you run — Oracle EBS, Fusion or something else — and we will tell you what the integration actually involves for your setup.
Powered by AI · Typically replies instantly