Countries · GR
E-invoicing in Greece
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
| 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 |
| Code | Rejection | Guide |
|---|---|---|
| GR-R-002 | myDATA reporting required | Fix guide |
| GR-R-004-1 | When Supplier is Greek, there must be one MARK Number | Fix guide |
| GR-R-006 | Greek Suppliers must provide the VAT number of the buyer, if the buyer is Greek | Fix guide |
| GR-R-001 | Greek AFM (VAT number) required | Fix guide |
| GR-R-003 | Greek invoice type code required | Fix guide |
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.
Have a Greece e-invoice that came back rejected? Check it here.
Checking is free. The first verified download every 30 days is free. After that €1.90 per invoice, or €9 a month for all of them.