Last modified on 2025-11-27 in Blog
Peppol BIS 3.0
myDATA
Υπουργείο Οικονομικών
Post-audit
2019
2020
05 years
Greece is one of the most complex countries in Europe for tax compliance and e-invoicing. Covering the entire market requires certification, and its VAT system is uniquely challenging, with specific codes and reporting requirements not seen elsewhere.
Greece is moving toward mandatory e-invoicing across all business sectors as part of its ongoing tax system reform. Using the myDATA platform, developed by the Independent Authority for Public Revenue (AADE), businesses are now required to report transaction data in real time. This change supports better transparency, reduces tax fraud, and brings national practices in line with EU standards.
Starting in September 2023, all suppliers to the public were required to send and issue e-invoices via certified channels. Although the B2C invoices are not yet in the structured format, the sales data are to be reported digitally. These changes apply to all businesses operating in Greece, regardless of size or industry.
Businesses in Greece must continue to report their receipts and invoices in structured format as usual using the myDATA platform, even though the government has not made structured B2B e-invoicing mandatory yet. Approved by the EU Council, the new rule will require businesses to issue structured electronic invoices through the myDATA platform, using the EN 16931 format. Traditional formats like paper or PDF invoices will no longer meet compliance standards for B2B transactions.
It is based on the B2G e-invoicing system, which was already launched in September 2023. But there have been new developments indicating that some key implementations, particularly those concerning the wider elements of the public sector, are likely to run behind schedule until September 2025.
You do not need to know anything about e-invoicing standards or real-time reporting.
E-invoicing in Greece refers to the process of issuing and receiving invoices in a structured electronic format and submitting them directly to the government’s digital platform, myDATA. Unlike paper or PDF invoices, e-invoices are created in a way that allows systems to process them automatically, reducing human error and improving efficiency.
Greece uses e-invoicing as part of its effort to modernize the tax system, improve transparency in business transactions, and fight tax evasion. With the use of structured invoice submissions together with myDATA, businesses can optimize operations like VAT submissions, accounting summaries and audit preparation. This system is closely aligned with the EU’s strategy for digital reporting under Directive 2014/55/EU .
Greece has been slower to go fully digital compared to Northern Europe, and many people are hesitant to accept new rules and systems. This makes Greece a challenging market for e-invoicing providers, but it also shows why having a trusted, certified solution is so important.
Greece switched to the use of electronic invoices instead of paper to enhance the manner in which transactions involved in business are reported, monitored, and documented. Using the myDATA platform, invoicing data is now transmitted directly to the tax authority in real time and this is expected to help minimize the occurrence of errors.
The change is important in addressing tax evasion and putting Greece in line with EU reporting requirements on digital. It also simplifies and eases the work of businesses through the reduction of paperwork and simplification. DDD Invoices helps companies in making this transition so that they can manage their e-invoicing activities, according to the existing regulations.
Greece is in accordance with the EU Directive 2014/55/EU and requires that all public sector bodies receive and process e-invoices in a structured form according to the Peppol BIS 3.0 with full compliance with the European standard EN 16931. These invoices should move through recognized licensed Peppol Access Points, and are forwarded through the National Interoperability Centre (KE.D), and finally integrated into myDATA, Greece’s centralized electronic books platform, for validation and further processing.
The system can be used on all tenders of the public procurement over € 2500, so there is traceability, verifications, and G2S works between suppliers and government organizations.
Technical & Legal Requirement:
Purpose & Compliance:
Businesses in Greece must continue to send their invoices as they currently do, reporting them through the myDATA system, under Directive (EU) 2025/516. The new regulation will require companies to issue invoices using the Peppol BIS 3.0 format, submit them through the myDATA system, and receive a unique document identifier (MARK) for each invoice post-validation.
In Greece, all B2B invoices now need to follow the Peppol BIS 3.0 format and go through validation in the myDATA system, where each invoice is given a unique MARK. This process makes invoicing faster and more reliable, helping businesses avoid disputes and reduce errors. It also streamlines VAT tracking and ensures Greek businesses are fully aligned with EU standards for digital transactions.
In Greece, B2C sales do not require e-invoicing but real-time e-reporting is required to almost all B2C selling. The businesses have to eventually relay their B2C transaction records through electronic means to the myDATA platform held by the Independent Authority of Public Revenue (AADE). They can nevertheless continue to be issued paper or PDF receipts to the consumers and the underlying transaction data must be reported in real time or close to real time through certified systems.
Retailers such as supermarkets, restaurants, cafes or other consumer-based companies must employ fiscalized cash registers or POS systems, certified by the Greek government. These machines are automatically connected and send details of transactions including the VAT payable and payment channels of the transaction to tax authority. The system keeps every receipt safe and can be traced and facilitates compliance of VAT as well as anti-fraud.
In Greece, fiscalization is an important private retail compliance element. Certified fiscal devices must issue receipts containing all legally required elements, including a QR code, and integrate with POS terminals so that card payments are automatically matched to fiscal receipts. These devices securely record all transactions and report them first to a specialized fiscal portal and then to myDATA in real time, supporting tax transparency, accurate VAT reporting, and audit readiness.
Fiscal devices must be certified by AADE and installed by authorized technicians. They ensure that VAT is correctly calculated and displayed on receipts, and that all transaction data is stored securely and cannot be altered. Businesses using these devices must also close each business day with an official Z-report, which summarizes daily transactions and confirms compliance.
In Greece, e-reporting is all about submitting periodic summaries of a business’s financial activity to the tax authorities. Instead of sending data in real time, companies provide structured reports, often based on their ledgers or a combination of issued and received invoices. This reform is central to Greece’s commitment to modernizing VAT compliance and aligns with the EU’s VAT in the Digital Age (ViDA) initiative.
This helps tax authorities get a clear picture of transactions over a specific period, making it easier to check accuracy, ensure compliance, and reconcile VAT. Together with e-invoicing, e-reporting improves transparency, strengthens audit readiness, and keeps businesses aligned with EU standards.
Beginning in 2024, Greek companies will be required to meet e-invoicing and e-delivery requirements under the myDATA system, which will be coordinated by the Independent Authority for Public Revenue (AADE). Lack of transmission of invoices or delivery documents to myDATA may cause a penalty between € 100 and € 20,000 yearly, depending on the size of the business and the accounting system.
Failure to issue or transmit retail documents can result in a fine of up to 50% of the VAT amount in question, with a minimum value of € 250 or € 500, depending on the arrangement of the accounting.
Failure to report accounting information such as payroll, depreciation or invoice details can be subject to a fine of 10% of the net value of the omitted information, at most € 100,000 per year. The multiple or repeated offense after five years could lead to doubled or even quadrupled penalties and in worst-case situations, temporary suspension of business activities. The businesses should report on time and accurately as required by the AADE though providers that are certified to prevent these effects.
Since Greece has already implemented e-invoicing requirements on all B2B deals that will go into effect on July 1, 2025, companies need to ascertain that their invoicing system complies with the new requirements. The correct e-invoicing provider will have the ability to keep you compliant, to increase the efficiency of your operations and prevent delays or errors.
It’s important to choose a provider that is certified by AADE and can support Peppol BIS 3.0 and EN 16931 formats, ensuring full compatibility with the myDATA platform. The provider should also stay up to date with regulatory changes so that your systems remain compliant as rules evolve.
As our company, DDD Invoices, offers compliant, seamless, and up-to-date e-invoicing solutions, we believe our services are the best fit for Greek businesses looking to meet the new invoicing and reporting requirements efficiently.
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Starting in 2024, Greek businesses must comply with e-invoicing rules under the myDATA platform, managed by the Independent Authority for Public Revenue (AADE). Businesses must transmit invoices and receipts electronically via certified providers.
The number of documents that are not sent to myDATA may lead to a fine between €100 and €20,000 per year depending on the size of the company and its accounting method. Failure to produce retail receipts amounts to a penalty of up to 50% of the VAT in question with minimum fines of $250 or $500.
myDATA is Greece’s official digital platform for e-invoicing, managed by the Independent Authority for Public Revenue (AADE). To comply, businesses must use certified e-invoicing software that integrates with the myDATA system. DDD Invoices is fully capable of handling myDATA compliance and takes full responsibility for supporting Greek businesses with accurate, secure, and regulation-ready e-invoicing.
Written by the Compliance team
Reviewed by Denis V. P.
DDD Invoices is an enterprise-grade platform delivering a powerful infrastructure for creating, sending, receiving and storing electronic documents. DDD Invoices enables software providers like ERPs, SaaS, eCommerce, POS systems, accounting & invoicing softwares, billing services and others, to easily adhere to global invoicing compliance requirements and shorten their time-to-market.