When does B2B e-invoicing become mandatory for large companies in Greece?

On 2 March 2026, B2B e-invoicing becomes mandatory for large companies with annual turnover above €1M, with a transition period until 3 May 2026.

What is the transition period for all companies to comply with the e-invoicing mandate?

All companies must comply by 1 October 2026, with a transition period until 31 December 2026.

When does the full penalty enforcement for non-compliance with e-invoicing start?

Full penalty enforcement begins on 4 May 2026 for large companies after the transition period ends.

When does Phase A of e-transportation become fully mandatory for all Greek enterprises?

Phase A becomes fully mandatory on 1 December 2025 for all remaining Greek enterprises.

When does digital reporting of logistical lifecycle events become fully mandatory?

Digital reporting of logistical lifecycle events becomes fully mandatory on 12 October 2026.

A look at e-invoicing phase 1 & e-transportation in Greece

Launch of myDATA goods e-delivery reporting regime second phased delayed to Oct 2026

VatCalc · 16 days ago

Greek authorities have postponed the second phase of the myDATA e-delivery reporting regime to October 2026, while outlining a phased rollout with key compliance dates. Companies with 2022 revenues above €200,000 and those in certain sectors must report from 1 December 2025, with further digital tracking and QR code scanning introduced on 1 October 2026. The system will become mandatory for public sector entities on 1 January 2026, and CN item coding will be implemented on 1 January 2027.

Tax Relief for Late VAT Filings: Fines Slashed Up to 80%

Tovima · 17 days ago

Greek tax authorities have introduced a new framework that will reassess fines issued from 19 April 2024, cutting penalties by up to 80% and setting a standard €100 fine for late or missing filings that do not create a tax liability. The reform also eliminates the €250/€500 penalties for low‑value withholding tax declarations and removes fines for cases where the additional tax payable is below €100.

Greece VAT Update

VatCalc · 17 days ago

Greek VAT update: The omnibus tax bill tabled on 1 May 2026 introduces immediate tightening of the reverse charge for construction services, reduces the VAT rate on electricity transmission services to 6 %, and retroactively lowers penalties for nil and credit VAT returns and late withholding filings back to April 2024. Volume‑based rebate clarifications also take effect immediately. All changes are expected to apply from publication in the Official Gazette, with updates reflected instantly in invoices, VAT returns and e‑invoicing.

Greece's myDATA and E-Invoicing: A Three-Layer Digital Tax System

SAFT Validator · about 2 months ago

Greece has introduced a three-layer digital tax framework that combines real‑time reporting via myDATA, a structured B2B e‑invoicing mandate, and an e‑transport system for goods movement. The B2B e‑invoicing requirement becomes mandatory on March 2 2026 for firms with revenue above €1 million and on October 1 2026 for all other businesses, while myDATA has been compulsory since 2021. Early adopters receive significant tax incentives, and non‑compliance triggers steep penalties.

Greece Delays B2B e-Invoicing to March 2026: Scope & Penalties

RTC Suite · 3 months ago

Greek authorities have postponed the mandatory B2B e‑invoicing go‑live to 2 March 2026, with a two‑month soft‑launch ending in early May. The first wave targets resident large businesses (turnover €1 million+) and covers domestic B2B supplies and exports outside the EU, while EU B2B remains optional. Penalties for non‑compliance include VAT‑based fines and fixed €500/€1,000 penalties, and businesses must submit a commencement declaration to AADE before issuing e‑invoices.

Greece myDATA e-book and e-invoices update

VatCalc · 3 months ago

Greek tax authority AADE has postponed the mandatory B2B e‑invoicing launch to 2 March 2026, with a two‑month soft launch ending 2 May 2026 for large resident businesses. All other resident taxpayers must adopt the system from 1 October 2026, and a new penalty regime and early‑adopter incentives have been announced.