An e-invoicing provider (ΥΠΑΗΕΣ) is a company certified by the Greek tax authority (AADE) that signs every document a store issues and sends it to myDATA. The store issues the receipt from its till (the POS), the provider transmits it and returns the ΜΑΡΚ and QR code printed on it. So no cash register is needed at the counter.
If you haven't decided between a cash register and a provider yet, start with the guide Receipts, myDATA and the order slip in Greek hospitality and talk to your accountant.
Which providers IKAROS POS connects
IKAROS POS connects to three certified providers: Wrapp, Oxygen and iNVOICEsoft. With each of them it sends receipts, 8.6 order slips, invoices and credit notes.
- Wrapp: open your Wrapp account straight from the back office (Receipts setup) with your email and mobile. Finish the contract and payment at Wrapp in a few minutes and the connection completes by itself. The document series are created automatically.
- Oxygen: enter the API token Oxygen gives you and pick the environment: test (sandbox, nothing goes to AADE) or production (real ΜΑΡΚ). Press "Test connection". The Oxygen link is in beta.
- iNVOICEsoft: enter the log-in details your provider gives you and press "Test connection".
- Cash register: if you prefer one, IKAROS POS keeps tables and orders and the receipt comes from your cash register.
You pay the provider's subscription directly to them, under your own VAT number: the provider contract is registered with AADE per business. Prices are those each provider publishes.
Which documents are sent
| When | Document |
|---|---|
| Takeaway, delivery, counter | Retail receipt (11.1) |
| Table open, each round of orders | Restaurant order slip (8.6) |
| Table closed | Receipt linked to the table's 8.6 slips |
| Business customer | Sales invoice (1.1) with their VAT number |
| Cancellation or return | Credit note (11.4, or 5.1 for an invoice) |
| On the house | A line at list price with zero value |
The program picks all of this itself: the waiter sends the order, the till takes payment, and the right documents go out in the background.
Invoice to a business
At payment press Invoice instead of receipt and enter the customer's VAT number. With Wrapp, the name and address fill in by themselves; with Oxygen or iNVOICEsoft you type them. Invoices use the wholesale classification, while receipts usually use category1_1 / E3_561_003, because food and drink are goods, and category1_3 for the delivery fee. Your accountant decides the final classification.
Card payments
Card terminals must be connected to the provider's software. IKAROS POS sends the amount to the terminal without typing, with Viva, EveryPay, myPOS, Nexi SmartPOS and SumUp terminals, or through Wrapp (the A.1155/2023 POS link) for the terminals Wrapp supports.
IRIS: for a receipt to say "IRIS" the provider must have confirmed its IRIS code in myDATA. Today that is Oxygen (and a cash register); with Wrapp or iNVOICEsoft IRIS doesn't show on the till yet. Ask your terminal provider which connection it supports before you sign.
When the internet or the provider is down
- The store's internet: with the "Offline till" you keep selling and the sales are kept on the device until the connection is back. Keep a phone with 4G as a second connection.
- Provider outage: receipts wait and are sent again by themselves. The top of the till shows whether the provider is at fault (for Wrapp, as its public status page shows; for Oxygen and iNVOICEsoft we check every two minutes that they answer) or something else, such as wrong log-in details.
- Never twice: before sending again, the system checks with the provider whether the receipt already exists.
For how a loss of connection with the provider must be documented, follow your provider's and accountant's instructions: AADE's rules on this are changing.
Your accountant sees the documents
In the back office (My accountant) you can give your accounting office read-only access: they see each month's sales by VAT rate and download the documents with ΜΑΡΚ as CSV, without you sending them reports.
Checklist
- Legal name, VAT number and address correct in the store details.
- An account with a provider (Wrapp, Oxygen or iNVOICEsoft), or the decision for a cash register, with your accountant.
- A connection test and a few receipts in test mode.
- A card terminal that connects to the system.
- A second internet connection (a phone with 4G).
Questions
What is an e-invoicing provider?
A company certified by AADE (ΥΠΑΗΕΣ) that signs a store's documents and sends them to myDATA. It returns the ΜΑΡΚ and QR printed on the receipt, so no cash register is needed at the counter.
Which providers does IKAROS POS work with?
Three certified providers: Wrapp, Oxygen and iNVOICEsoft. You open the Wrapp account straight from the back office; for Oxygen you enter its API token, for iNVOICEsoft your log-in details. You can also work with a cash register.
Who pays the provider?
The store, directly to the provider, because the contract is registered with AADE under its VAT number. The IKAROS POS subscription is separate.
Does IKAROS POS send 8.6 order slips?
Yes, with a provider: each round of an open table is sent as an 8.6 and the receipt at closing is linked to the table's slips.
Can it issue invoices to businesses?
Yes, with Wrapp, Oxygen or iNVOICEsoft. At payment choose invoice and enter the VAT number; with Wrapp the other details fill in by themselves.
What happens if the provider has an outage?
Receipts wait and are sent again by themselves, never twice. The till shows whether the delay is due to the provider.
Can I take IRIS payments with every provider?
Not yet. The receipt says IRIS with the Oxygen provider or with a cash register. With Wrapp or iNVOICEsoft, IRIS appears once the provider confirms its code in myDATA.
Sources
These guides are general information, not tax or legal advice. For your own business, ask your accountant.