Greek e-invoicing providers: what they are, how they charge and how to choose.

An e-invoicing provider (πάροχος ηλεκτρονικής τιμολόγησης) sits between your software and AADE. When you issue an invoice, the provider signs it digitally, sends it to myDATA, gets back the MARK (the number AADE gives every document) and delivers the invoice to your customer.

Every invoice that goes through a provider carries:

• the provider’s name and website,
• an authentication code,
• the MARK, and the date and time of issue,
• the QR code,
• and, when printed, the provider’s licence number.

To get a licence, a provider goes through an AADE committee. It must have its seat or an establishment in Greece, technical staff and a security policy under ISO 27001 or equivalent, and it must keep invoice data within the European Union.

AADE offers timologio, on the web, and myDATAapp, on your phone, free of charge. They cover invoices to the public sector too. If you issue a few invoices a month and already write them by hand, they’re enough and you don’t need a provider.

But if your invoices come from business software or an eshop, with AADE’s apps you would type every invoice a second time by hand. That’s where you need a provider, connected to your software. The comparison is also on the page about Greek e-invoicing.

You won’t find prices here: they change often, and each provider charges differently. You will find what to look at in a quote, so that you compare like with like.

• Subscription: usually monthly or yearly, tiered by how many documents you issue. Count how many you issued last year, including credit notes, and delivery notes if those go through the provider too.
• Activation: some providers charge an amount at the start, to open your account.
• Connection to your software: this isn’t always included in the subscription. Ask whether the provider has a ready connection for your software or whether one has to be built.
• What’s included: invoice storage, incoming invoices, retail receipts, invoices to the public sector. Two quotes at the same price can cover very different things.

Ask two or three providers for a quote, with the same number of documents and the same needs, and compare the total cost of the first year.

1. Is it on AADE’s list? AADE publishes the licensed provider software. In October 2026 there were 40. Check the name of the software, not just the company.
2. Does it connect to your software? Is there a ready connection for Odoo, your eshop or your group’s ERP? If not, does it have a documented API, so that someone can build one?
3. Do you invoice the public sector? AADE’s list shows which software supports it.
4. Do you also issue retail receipts? Receipts can go through a provider instead of a cash register, and then the provider must connect to your POS terminals. AADE’s list shows this too.
5. What happens to your suppliers’ invoices? Do they arrive in your software, or do you have to download them from the provider’s website?
6. What happens if the connection drops? AADE allows one day to resend whatever didn’t go through. Ask who does it, you or the system, and how you find out.
7. How do you leave, if you want to? How you get your invoices back, in what format, and how much notice you have to give.

Once you sign with a provider, it submits a start declaration on myAADE within 10 days. You accept or reject it within another 10 days. If you do nothing, it counts as accepted. If the provider doesn’t submit it, you do.

You also give the provider a special authorisation on Taxisnet, the Greek tax portal, under «Εξουσιοδοτήσεις» (authorisations). Usually your accountant handles this together with the provider.

The decision covers two cases: the connection between you and the provider drops, or the one between the provider and AADE. In both, whatever didn’t go through must be resent within one day. Businesses that issue retail receipts must also have a second internet connection, for example a SIM card.

That’s why your software’s connection to the provider must keep whatever didn’t go through and resend it on its own, without anyone having to remember. See how that works in how an invoice travels.

Yes. You submit a revocation declaration by the 10th of the following month and start with the new provider. The hard part isn’t the declaration but your software’s connection: if it was built for the old provider, it has to be rebuilt.

That’s why we connect software through eInvoice Link: the software talks to the platform, not to the provider, and switching provider is one setting.

A business with gross revenue of at least €50 million and an establishment in Greece can become a “self-provider” (ιδιοπάροχος), which means it sends its own invoices to other businesses without a provider. For everyone else, from 1 February 2027 the route is a provider or AADE’s apps.