- Greece’s AADE is rolling out mandatory B2B e-invoicing in phases via myDATA, a near-real-time clearance system for VAT and accounting data.
- Large taxpayers (> €1M turnover) must comply from March 2, 2026, with all other VAT-registered businesses starting October 1, 2026; e-delivery note rules begin October 12, 2026 and expand in 2027.
- Valid B2B invoices must be structured electronic invoices (EN 16931), not paper/PDF, and include an AADE MARK number and QR code for verification.
- Domestic B2B transactions and exports to non-EU countries are in scope; cross-border reporting to myDATA is required, while intra-EU structured e-invoicing remains optional for now.
- Non-compliance can make invoices invalid for VAT and trigger significant fines, including VAT-based penalties, per-invoice fines, and potentially business suspension.
Source: vatcalc.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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