🧾 Mandatory Electronic Invoicing from 2026 – What Businesses Need to Know
From 2026, electronic invoicing becomes mandatory for all businesses in Greece, fundamentally changing the way sales documents are issued, transmitted, and verified. Compliance with the new legislation is no longer optional, but a critical requirement for the smooth operation of every business.
In this guide, we will analyze what is changing, which businesses are affected, and how you can prepare effectively by choosing a certified Electronic Invoicing Provider.
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What Does “Mandatory Electronic Invoicing” Mean?
🔷 Mandatory electronic invoicing means that all invoices must be issued, transmitted, and archived electronically through a certified provider, with automatic transmission of the data to the Greek Tax Authority (AADE) via the myDATA platform.
Which Businesses Are Affected?
🔷The obligation applies to:
• Small, medium, and large businesses
• Self-employed professionals
• B2B, B2C, and B2G businesses
• Companies using ERP or commercial software systems
The Role of the Electronic Invoicing Provider
The Electronic Invoicing Provider is responsible for:
• Electronic issuance of invoices
• Validation and compliance checks
• Real-time transmission to myDATA
• Issuance of the M.A.R.K. and QR Code
• Secure archiving of documents
Without a certified provider, no business will be able to operate legally from 2026 onward.
👉 Learn more about the role of the provider on the page:
Electronic Invoicing Provider
How e-timologiera Helps You
e-timologiera is an AADE-certified Electronic Invoicing Provider and offers:
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Full compliance with applicable legislation
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Direct integration with myDATA
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API connectivity for ERP and commercial systems
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Support for B2B, B2C, and B2G transactions
Mandatory electronic invoicing in 2026 is not merely a legislative change—it represents a transition to a new digital reality. Choosing a reliable provider early is a strategic decision for every business.
See the complete Electronic Invoicing 2026 Guide for detailed preparation for businesses and accountants
You may also find useful the complete guide:
What Is myDATA – Complete Guide for Businesses & Accountants
👉 For developers & ERP Software house: