Greece is moving toward mandatory e-invoicing. After myDATA and real-time cash registers, 2026 brings new obligations for businesses of all sizes. Here's what you need to know.
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🟢 What changes from July 1st
From July 1, 2026, all B2B transactions between businesses in Greece will need to use electronic invoicing. We're not talking about PDFs — we're talking about structured electronic files (XML) that are exchanged automatically between systems.
The adopted standard is PEPPOL, the European standard already used in 30+ countries. This means Greek businesses will be able to exchange invoices directly with partners across the entire EU.
📋 Key changes
- Invoices in PEPPOL BIS 3.0 format (XML)
- Submission via certified Access Points
- Mandatory acceptance by the recipient
- Automatic update to myDATA and AADE
- Transmission deadline: 24 hours from issuance
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▶️ Who is affected
In the first phase (July 2026), businesses with annual turnover above €500,000. In the second phase (January 2027), all businesses regardless of size.
✅ Benefits
- Reduced bureaucracy
- Faster payments
- Zero errors
- Tax compliance
- Easier exports
🛠️ Preparation
- Choose a PEPPOL Access Point
- Upgrade ERP/accounting software
- Train staff
- Test with partners
- Review procedures
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💰 Cost and providers
Most ERP providers in Greece have already integrated PEPPOL support. The cost depends on invoice volume: from €50-100/month for small businesses, up to more complex solutions for larger ones.
For very small businesses, AADE will offer a free tool for creating and receiving electronic invoices. This eases the transition for freelancers and micro-businesses.
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