Greece's myDATA fines arrive before invoices — 50% VAT penalty on non-issuance.
A kiosk owner in Athens issues twenty receipts a day on a tablet. A grocer in Chania still pencils the monthly VAT at the kitchen table. From 2 March 2026, every Greek business whose 2023 revenue cleared €1m, about 38,000 firms by AADE's (the Independent Authority for Public Revenue) own count, must route every B2B and B2G invoice through a certified electronic-invoicing provider. Around that core, the myDATA (the AADE's e-books and e-invoicing platform) transmission stack hits everyone else: 10% per untransmitted invoice, €100 per missed digital delivery note, €250–€500 per payroll slip out of place. The correction guidelines, in the words of the Chania accountants' association, are "impossible to understand."
01The pain
Friday afternoon, December 2024. AADE, Greece's tax authority, pushes new correction rules for the eSend (the point-of-sale fiscal stream) to myDATA bridge into the same year-end portal that accountants in Athens, Chania and Heraklion are using to close the books. The Chania regional accountants' association writes formally to the central administration. Their verdict on the guidelines: "impossible to understand by obligated businesses." The press picks it up. Nothing changes.2,3
The 2 March 2026 cliff sits on top. About 38,000 firms with 2023 revenue above €1m must route every B2B and B2G invoice through a certified electronic-invoicing provider. Failure is not a paperwork lapse — the Athens Times records it as "non-issuance": 50% of related VAT, plus €500–€1,000 per audit on non-VAT transactions, plus loss of the buyer's input-VAT deduction. That last clause is the one that scares the buyer side. It turns "did the supplier file correctly?" into a question every customer must ask before paying. The 2026 budget books €1.3 billion in AADE penalty revenue as a forward line. Enforcement is the policy.1,4
Underneath, the everyday traps. The phase-two digital delivery note launched with no resolved handling for connection loss or QR-scan failure: a daily problem on a mountain road in Crete, where 4G drops and the driver still has to put a legally compliant document in the customer's hand. A €3 environmental-fee mis-attribution draws a €500 fine. A clerical slip becomes a penalty two orders of magnitude larger than the thing it concerns. A proportionality challenge sits before Greece's Council of State. Operators will not benefit from it for years.3
Further reading
- 1 Athens Times (English-language Greek news desk) — "Electronic invoicing grace period ends, fines begin today": athens-times.com/electronic-invoicing-grace-period-ends-fines-begin-today
- 2 Haniotika Nea (Chania regional daily) — "Λογιστές Χανίων: προβλήματα με το myDATA" ("Chania accountants: problems with myDATA"): haniotika-nea.gr/logistes-chanion-provlimata-me-to-mydata
- 3 Fiscal-Requirements (industry compliance brief, Greece desk) — myDATA / AADE e-invoicing fines and digital delivery note phase 2: fiscal-requirements.com/news/2668
- 4 AADE — Independent Authority for Public Revenue (official) — "myDATA — Books of AADE & e-Invoicing": aade.gr/en/mydata
02Who solves this today
Three Greek vendors that publicly self-market to the myDATA / AADE e-invoicing niche on their own homepages. Each is either a certified electronic-invoicing provider naming the AADE regime as its core promise, or an SME-priced invoicing tool whose headline is real-time transmission to myDATA. The free AADE timologio app is the regulator's own tool, cited in section 01, not a third-party vendor. The list is intentionally narrow.
Listed providers publicly market to the Greek myDATA / AADE e-invoicing niche on their own homepages. Inclusion is not endorsement. Adjacent Greek-market vendors were considered and excluded where their public homepage was unreachable for verification at the date of writing: Epsilon Smart's marketing portal returned a 403 to our verifier and was therefore dropped per the two-or-three-verified-beats-a-longer-list precedent. Workadu and Cloudo Cloud are visible in the Greek e-invoicing market and may be considered in a future revision; the three above were chosen as the strongest first cohort on the strength of their front-page positioning. The official AADE portal (aade.gr/mydata) is cited above in section 01 as the source of the regulatory regime and the publisher of the free timologio app, not as a third-party solution provider.
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