Greece extends mandatory e-invoicing to virtually all remaining resident businesses on 12 October 2026.
A short page, because it binds a narrow set — but if it binds you, the notification deadline has already gone.
Who it binds
- Businesses with 2023 revenue above €1m have been in scope since 2 March 2026, after a two-month soft launch to May.
- From 12 October 2026, virtually all remaining resident businesses.
- Notification to AADE of the chosen method was due 30 September 2026.
What it actually demands
- Transmission through myDATA, with Peppol BIS Billing 3.0 as the interoperable format.
- The same structured-invoice data discipline as France and Germany — entity identifiers, tax codes, mandatory EN 16931 fields.
Greece is small enough in most UK groups that it gets missed entirely, and it is usually discovered when a Greek entity's invoices stop being accepted rather than through a compliance review.
What it means for the estate
If you are already building for France and Germany, Greece is incremental work on the same structured-invoice output rather than a separate project. That is the argument for sequencing the EU e-invoicing mandates as one workstream instead of three.
Primary sources
Related
Run the exposure check — three minutes, free, and it will tell you which of the other 11 dates catch you as well and in what order they have to be done. Sequencing is most of the cost on these programmes.