The Greek Public Revenue Authority (AADE) has announced the implementation of mandatory electronic invoicing (e-invoicing) for B2B transactions from 2 February 2026. The obligation concerns the issuance of e-invoices for every sale of goods and provision of services between businesses in Greece, as well as to companies in third countries (outside the EU). For sales to businesses in the EU, the issuance of e-invoices remains optional. If a foreign company does not accept e-invoices, they can …