E-invoicing 2026
Mandatory e-invoicing in Greece from 1 October 2026.
From 1 October 2026 every business in Greece issues its invoices to other businesses (B2B) electronically, through a certified provider. Here is what changes, what to do and how Kronn ERP gets you ready.
Coming soonSign-ups open soon. Book a demo to see it first.
The two phases
Phase A
Businesses with gross revenue above €1,000,000 in the 2023 tax year.
Phase B
Every other business that invoices other businesses.
What changes
- B2B invoices are issued only electronically, through a certified e-invoicing provider.
- The provider transmits each invoice’s data to AADE myDATA automatically and every document gets a MARK.
- Commercial or accounting software alone is not enough to issue invoices: you need a provider.
- Non-compliance can lead to fines.
What to do now
- 01
Choose a provider
Or invoicing software that already includes one, like Kronn ERP, so you don’t pay for two subscriptions.
- 02
Check your client data
VAT numbers, addresses and tax offices must be right. In Kronn ERP they are filled in from the VAT number.
- 03
Talk to your accountant
About the declarations and deadlines that apply to your business.
- 04
Do a test run
In Kronn ERP you try everything in demo mode, with nothing transmitted, and activate when you’re ready.
Kronn ERP
How Kronn ERP covers it
The provider is part of the software, not a separate product you have to connect.
Coming soon
- A certified provider in every plan, with no second subscription
- Automatic transmission to myDATA and a MARK on every document
- Sales and services invoices, retail receipts and credit notes
- Client details from the VAT number, for correct documents from the start
- Collections, balances and bank reconciliation in the same software
This page is for information only and is not tax advice. For the obligations of your own business, consult your accountant.
FAQ
Frequently asked questions
Who does mandatory e-invoicing from 1 October 2026 apply to?
Every business that issues invoices to other businesses and was not already covered by phase A on 2 March 2026 — mainly those with gross revenue up to €1,000,000 in the 2023 tax year.
What is an e-invoicing provider (Πάροχος)?
A certified service that issues electronic invoices and transmits their data to AADE myDATA automatically. In Kronn ERP the provider is included in every plan.
Is my current invoicing software enough?
Only if it connects to a certified provider. Commercial or accounting software on its own is not an accepted way to issue B2B invoices once you are in scope.
Does it cover retail receipts?
The obligation covers invoices between businesses (B2B). Retail receipts follow separate rules, which are worth checking with your accountant. Kronn ERP also issues retail receipts through the same provider.
What does the provider cost in Kronn ERP?
Nothing extra: it is included in every plan, from €10 a month + VAT billed yearly.
Next run: soon
Ready for e-invoicing?
Kronn ERP opens for sign-ups soon. Book a demo and we’ll walk you through it now.
Coming soon