Greece puts back e-invoicing for firms under €1m to 2 November

Greece puts back e-invoicing for firms under €1m to 2 November

1 October 2026: Greece has delayed the start of mandatory e-invoicing for businesses with gross revenue of up to €1m, moving it from 1 October to 2 November 2026. A transition period then runs to 31 January 2027, during which those firms may keep using their accounting or ERP programmes in parallel.

Not yet independently verified. The extension is reported by Greek outlets; the AADE site and the joint decision itself were not reachable. We will link the decision when we can open it. We will update this when it can be confirmed, and remove this note.

The delay covers the second phase of the myDATA e-invoicing scheme run by the tax authority, AADE. The first phase, for businesses with revenue above €1m, began on 2 March 2026. The second phase applies to businesses whose declared 2023 gross revenue was €1m or less.

GovNews.gr reports that businesses using an e-invoicing provider must file a declaration of commencement of electronic issuance with 2 November 2026 as the effective date. Businesses that issue invoices only through AADE's free applications, timologio or myDATAapp, do not have to file it. Before the delay, AADE guidance of 22 September had set 12 October as the deadline for the declaration, with the adjustment period ending on 31 December; Greek reports do not say whether that deadline has moved.

The authority says about 655,000 businesses, close to 70% of those affected, have already begun using a provider or the free apps, according to newmoney.gr.

The same decisions move other dates in the myDATA programme:

• Digital delivery notes: loading and unloading movements become part of the scheme from 1 January 2027.
• Unified product coding: required from 1 January 2028.
• Olive producers: the first and second phase obligations apply together from 1 January 2027, provided oil mills issue quantity receipts when they receive the olives.

Software suppliers that connect small clients to myDATA gain a month. They remain on the hook for 31 January 2027, when the parallel-running allowance ends.

Sources

• GovNews.gr: Electronic invoicing and myDATA, new extension from AADE for businesses with turnover up to €1m, 1 October 2026
• newmoney.gr: AADE extension on e-invoicing for small businesses and the digital delivery note (read 2026-10-06), 6 October 2026
• Capital.gr: AADE clarifications on the declaration for timologio and myDATAapp, 22 September 2026