What POS Providers and Retailers Need to Know
Fiscalization in Greece means recording every retail sale through an approved system. That system sends the sale data to the tax authority in real time. The rule affects POS software vendors. It affects international retailers too. It also affects HoReCa (hotel, restaurant and catering) firms selling in Greece. AADE (Independent Authority for Public Revenue) is the Greek tax authority. AADE runs myDATA, a platform for real-time reporting and bookkeeping. Greece is not a hardware-only country. A business can use a certified fiscal device. Or it can use licensed software that acts as a virtual tax mechanism.
How fiscalization works in Greece
Every retail sale in Greece passes through an approved fiscal system. The system records the sale. It signs the sale. Then it sends the data to AADE, near the moment of sale. This is real-time transaction reporting. It sits at the core of the Greek model.
MyDATA is the platform that gets this data. It handles reporting and digital bookkeeping. It is not an invoicing tool. Some POS vendors assume it is. myDATA collects and checks sale records. It does not issue documents on its own.
Each sale produces a fiscal receipt. This is a required sales document. Hardware devices store this record in fiscal memory. That is a protected storage area. It keeps sale history for audit. Signing, sending and storage work as one. Together they give AADE a live view of retail sales. That is why AADE does not rely on site visits alone.
Two fiscal systems: certified devices and the software route
For years, Greece asked for a certified fiscal device at every till. Much of the guidance online still says this. That guidance is now out of date.
Greece runs two valid systems side by side. The first is the hardware model. It uses a certified fiscal device. This is often a fiscal printer or a cash register (ECR). AADE approves the device. The device records and signs each sale on the spot.
The second is the software route. Licensed software from an AADE-approved e-invoicing firm can act as a virtual tax mechanism. This is often called an EDISP-type solution. It signs and reports sales like a device does. But it needs no dedicated hardware. A foreign POS vendor can use this route too. It works by linking the POS system to a licensed provider. It does not mean certifying the vendor’s own software. In practice, the hardware route is still more common today. But the software route has grown in the last few years.
Approval attaches to the fiscal device itself. It also attaches to AADE’s licensing of e-invoicing firms. It does not attach to the POS app as a device-style approval. Choosing a route is an architecture call. Make that call before you build. A Consulting Session can help you pick the right route for your setup.
The interconnection obligation – A.1098/2022 and A.1155/2023
A standalone payment terminal is not allowed where interconnection applies. The AADE interconnection guidance sets out two routes. The right one depends on your setup, not on a rollout date:
- A.1098/2022 covers the terminal-to-till link, for a fiscal device or ECR.
- A.1155/2023 covers the terminal-to-ERP (enterprise resource planning software) link, for firms that run sales through an ERP.
- A.1074/2024 lets a firm connect the terminal under A.1098/2022 instead, if its ERP already works with a fiscal device.
These are two options, not two steps. Neither route replaces the other. The full chain runs like this: fiscal device, POS software, ERP (where used), EFT/POS terminal (electronic funds transfer point of sale), the e-invoicing provider, myDATA, and AADE. The legal base starts with Law 4308/2014, the Greek Accounting Standards. That law sets the core duty to issue receipts and invoices. Joint decision 1138/2020 set up myDATA and the duty to send sale data to AADE. The framework continues through the AADE decisions named above.
Each sale carries a set of checks. These are a provider ID, signature data, and a public-key check. They also include a 24-hour time stamp. The terminal ID (TID) must match the point-of-interaction ID (POIID). An amount check and a one-use rule block repeat use. Together, these let AADE match each sale to its record. This is called transaction-to-sale matching. It checks each sale across the terminal, the fiscal record and myDATA. AADE also keeps an EFTPOS list. The list shows each terminal’s link status. A retailer can check its own estate this way.
Dates that are already in force
Greece’s fiscalization rules are live now, not upcoming:
- Terminal-to-till link under A.1098/2022: in force since 2024.
- The ERP route under A.1155/2023: in force since 2024, with its own set deadlines.
- IRIS instant payment acceptance, for in-store and online sales to shoppers: since 1 December 2025.
- B2B e-invoicing, phase 1: from 2 March 2026. This covers firms with 2023 revenue above €1 million. It had a grace window to 3 May 2026.
- B2B e-invoicing, phase 2: from 1 October 2026, for all other firms. The grace window runs to 31 December 2026.
The rule covers domestic B2B sales, plus exports to non-EU buyers. Sending e-invoices to EU-based buyers stays a choice. The buyer can say no.
AADE has moved from random checks to data-led risk review. Fines match the rule broken. Skipping a required POS terminal costs €1,500. Taking payment on a non-linked terminal costs €10,000 for single-entry books, or €20,000 for double-entry. E-invoicing gaps on VAT sales cost 50% of the VAT owed. Non-VAT sales cost €500 to €1,000. Serious breaches – such as not issuing a receipt, or tampering with a fiscal device – cost €10,000 to €50,000, plus a forced shutdown.
Frequently Asked Questions
Do we need a certified fiscal device to sell in Greece?
No, not always. Greece allows two valid routes. One is a certified fiscal device. The other is licensed software that acts as a virtual tax mechanism, run through an AADE-approved e-invoicing firm. Either way, the duty to sign and send each sale in real time stays the same. The software route is not free of limits. It runs through a licensed firm, not through certifying your own POS software.
Does our POS software itself have to be certified in Greece?
No. Approval attaches to the fiscal device. It also attaches to AADE’s licensing of e-invoicing firms. Your POS app is not approved the way a device is. But it must be able to drive a valid fiscal system, and produce valid documents.
What is the difference between myDATA and the Greek e-invoicing mandate?
They sit at different layers of one system. myDATA is real-time reporting and digital bookkeeping. It has been required since 2021. Retail fiscalization covers receipts and devices. Structured B2B e-invoicing is a separate rule for issuing documents. It phases in during 2026. Sales to shoppers (B2C) sit outside the e-invoicing rule. That sale data still reaches AADE through myDATA, though.
What happens if our terminals are not interconnected?
Taking payment on a terminal that should be linked triggers a fine. It is €10,000 for single-entry books, or €20,000 for double-entry. AADE checks its own lists against sale data. A gap can show up with no site visit.
Are there any limits on which retailers can use the fiscal device or e-invoicing provider model?
No. Law 4308/2014 says retail documents come from fiscal devices. Or, as an option, from providers of electronic retail sales data.
When we link POS software with an EDISP, must the POS software pass certification too?
No. The software route does not need the POS product itself to be certified. The EDISP firm must pass a strict certification process, and hold a suitability license. The linked POS product is not certified.
Final Thoughts
Fiscalization in Greece no longer means one hardware rule. It means a choice: a certified fiscal device, or a licensed software route. Then it means building the link and reporting duties right from day one. AADE checks compliance all the time, not once. Getting compliant starts with the right build choice. Our Consulting Session can help you make that choice. Staying compliant, as Greek rules shift, is where Regulatory Monitoring comes in.
| Disclaimer: The information on this page does not constitute legal advice. JB Fiscal Consulting cannot be held responsible for errors or omissions. Please contact us if you have specific questions about your compliance situation. |
JB Fiscal Consulting offers Consulting Sessions, Fiscalization Essentials Sessions, Regulatory Monitoring, and Ongoing Support for businesses. Contact us at office@jbfiscalconsulting.com or visit jbfiscalconsulting.com to discuss your compliance situation.
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