Greece myDATA
In 2020, Greece introduced a continuous transaction controls (CTC) scheme, called myDATA – an e-audit system. myDATA requires taxpayers to transmit transactional and accounting data to the tax administration, in real-time or periodically, which populates a set of online ledgers maintained on the government portal.
The goal of myDATA is for the online ledgers to be the only source of truth of the taxpayer’s tax and financial results, and for their respective information to pre-fill the taxpayer’s VAT returns and financial statements.
The myDATA scheme applies to Greek taxpayers obligated by law to keep their accounting records as per the Greek Accounting Standards. It covers B2B, B2G, and B2C transactions.
myDATA eBooks record: a summary of income and expense transactions, classifications of transactions, accounting adjustments which aim to provide a comprehensive overview of the taxpayer’s accounting and tax results.
When businesses file their tax returns, the data declared in them will be reconciled against the data in the eBooks.
A discrepancy between the eBooks and the tax returns triggers a two-phased reconciliation process whereby the taxpayer should correct the resulting difference, otherwise audits or penalties will be incurred.
What information must be declared in the myDATA portal?
The myDATA portal requires the reporting of:
- Transactional data: e.g. B2B, B2G, B2C invoices, credit notes, debit notes
- Accounting data: data which forms the accounting and tax results of businesses on the myDATA portal, e.g. payroll, depreciations, amortizations
Suppliers and buyers must each classify transactions into subcategories, such as revenue from sale of goods, expense from acquisition of services, revenue from provision of services, expense from amortization, expense from intracommunity purchase of goods etc.
What are the myDATA filing submissions?
The required data must be reported in different filing frequencies depending on the type of data and the data transmission method.
In principle, myDATA filing frequencies are:
- Revenue: reported in real-time
- Expenses: reported periodically following the deadlines for the submission of the VAT return (monthly or quarterly)
- Other accounting entries (revenue or expense): reported bi-monthly (payroll) or yearly (e.g. accounting adjustments, depreciations).
Data transmission methods can include ERP, manual upload and central e-invoicing application (timologio).
What types of documents must be reported by issuers and recipients to myDATA?
Issuers and recipients must report different documents to myDATA.
Issuers:
Issuers must report revenue from the different types of transactional and accounting documents they issue. Examples of documents issuers need to report include B2B/B2G/B2C invoices, transport documents, payroll, depreciation, contracts etc.
Recipients:
Recipients must report expenses from different types of transactional and accounting documents they receive. Examples of documents recipients need to report include domestic B2C invoices, B2B/B2C invoices from foreign suppliers, utility bills, credit notes, payroll, amortizations, contracts etc.
Additionally, if domestic issuers have not reported their required data to the myDATA platform, recipients must report them as omissions or deviations.
All businesses:
All businesses (issuers and receivers) must send classifications for their transactions, e.g. as revenue from sale of goods, expense from acquisition of services, expense from amortization, expense from intracommunity purchase of goods etc.
Greece myDATA rollout dates
- 20 July 2020: E-invoicing and reporting through accredited e-invoicing vendors begins
- 1 October 2020: Voluntary reporting of revenue and expenses begins, as well as classifications through all reporting methods
- 1 October 2021: Phase 1 of mandatory myDATA requirements begins, for revenue and certain taxpayers.
- 1 November 2021: myDATA scope extended to include revenue and all taxpayers.
- 1 January 2024: myDATA law applies for all data in scope generated in 2024, with few exceptions.
For the latest deadline changes, follow our Greece myDATA blog for updates.
Penalties
Failure to achieve consistency between the data registered in the e-books and the reported data in the tax returns triggers penalties or tax audits.
Penalties were established in December 2023, through Law 5073/2023 (FEK A’ 204) on “Measures for the limitation of tax evasion and other urgent provisions” in the event of failure and overdue submission of the required data, as well as in the event of violation recurrence within five years.
The penalties relate only to violations of the compliant reporting of income from invoices and other accounting entries (not expenses), as well as the recently introduced e-transport document. The implementation timeline and other details about the adopted penalties is yet to be published.
How Sovos helps to stay compliant with Greece's myDATA
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FAQ
Is myDATA in Greece mandatory?
Reporting and transmission of data to the myDATA platform is currently mandatory for taxpayers, but gradual implementation of myDATA is ongoing and deadlines and requirements continue to be updated.
Who is obligated to use the myDATA tax platform?
The myDATA scheme applies to Greek taxpayers obligated by law to keep their accounting records as per the Greek Accounting Standards. It covers B2B, B2G, and B2C transactions.
What are the reporting methods to myDATA?
The required documents are reported to myDATA through the following methods: the ERP, e-invoicing via accredited service provider, manual upload, central e-invoicing application (‘timologio’), fiscal devices (FIM).