Greece requires structured e-invoices for public contracts and, since 2026, between businesses. According to the European Commission, the B2B obligation took effect on 2 March 2026 for entities with gross revenue over EUR 1 million and on 1 October 2026 for all others. Invoices are sent through accredited providers or a free AADE application, and their data reaches the myDATA platform.
This page summarises the European Commission's country sheet for Greece, checked on 5 November 2026. It is not tax advice; your logistis can tell you how the rules apply to you.
What applies to whom?
| Obligation | Who | From | Channel | Status | Source |
|---|---|---|---|---|---|
| Receive and process EN 16931 e-invoices | All public bodies | set by 2021 decisions | KE.D, the National Interoperability Centre | in force (JMD 63446/2021, 98979/2021) | European Commission |
| Send EN 16931 e-invoices for public contracts over EUR 2,500 | Suppliers, phased by type of contracting authority | 13 September 2023, 1 January 2024 or 1 June 2024 | Peppol through certified providers, then KE.D | in force (JMD 52445 EX 2023) | European Commission |
| Same, for all general government expenditure over EUR 2,500 | Suppliers | 1 September 2025 | as above | in force | European Commission |
| Issue e-invoices for domestic and non-EU B2B sales | Entities with gross revenue over EUR 1 million | 2 March 2026 | accredited provider or timologio, reported to myDATA | in force, per the Commission | European Commission |
| Issue e-invoices for domestic and non-EU B2B sales | All other entities | 1 October 2026 | as above | in force, per the Commission | European Commission |
There is no B2C obligation. The B2B dates come from the Commission's sheet, which cites the Greek transposition of the EU's VAT in the Digital Age directive; Klarbon has not confirmed them from AADE, so check the current AADE decisions before relying on them.
How does it work?
For B2B invoices, you send the e-invoice through an accredited e-invoicing service provider or through AADE's free web application, timologio. The structured data reaches myDATA, which checks it and assigns each document a unique registration number, the MARK. For public contracts, certified providers deliver invoices over Peppol to the GSIS infrastructure, which routes them through KE.D to the right public body (European Commission).
Which formats are used?
| Format | Used for | Notes |
|---|---|---|
| Greek B2G CIUS following EN 16931 | invoices to public bodies | national structured format |
| Peppol BIS Billing 3.0 | public procurement | used for interoperability with other EU systems |
| myDATA data | B2B invoices and income and expense records | sent through providers or timologio, format set by Decision 1017/2020 |
What can Klarbon do with Greek invoices?
| You want to | Tool | Limit |
|---|---|---|
| Read a Peppol BIS or UBL invoice | open a Peppol invoice, free | myDATA files are not supported |
| Check a file against EN 16931 | check an e-invoice | not the Greek CIUS rules |
Klarbon is not an accredited e-invoicing provider. It does not send invoices, report to myDATA or obtain a MARK.
Related
E-invoicing deadlines by country
| Country | Scope | Obligation | From | Who | Source |
|---|---|---|---|---|---|
| Greece | B2G | Receive | In law | Contracting authorities and entities covered by Directive 2014/55/EU for in-scope public procurement invoices conforming to EN 16931. | Official source |
| Greece | B2B | Send | To be confirmed | Remaining entities in the phased national B2B framework described by the Commission. | Official source |
Frequently asked questions
Is B2B e-invoicing mandatory in Greece?
Yes. According to the European Commission, mandatory e-invoicing for domestic and non-EU B2B transactions took effect on 2 March 2026 for entities with gross revenue over EUR 1 million and on 1 October 2026 for all others. Klarbon has not confirmed these dates from a Greek official source.
How are B2B e-invoices sent in Greece?
Through an accredited e-invoicing service provider or the free timologio web application of the Independent Authority for Public Revenue (AADE). Either way, the invoice data reaches the myDATA platform, which checks it and assigns a unique registration number, the MARK.
Do suppliers to Greek public bodies have to send e-invoices?
Yes. Joint Ministerial Decision 52445 EX 2023 phased in EN 16931 e-invoices for public contracts over EUR 2,500 from 2023 and 2024, by type of authority. From 1 September 2025, they are mandatory for all general government expenditure over EUR 2,500.
What is myDATA?
myDATA is AADE's digital platform that records businesses' income and expense transactions. Since 2024 it pre-fills VAT returns from the transmitted data.