Starting December 1, 2025, all businesses in Greece are required to accept payments through the IRIS system, the country's new platform for real-time transactions between businesses and private customers. The Independent Authority for Public Revenue (AADE) has finalized the regulatory framework linking businesses' point-of-sale (POS) systems to tax authorities, while technical specifications have been updated to incorporate instant payment capabilities.Transaction Limits Daily transaction limits currently stand at €500 for payments between individuals or to businesses, with a maximum of €1,000 per day. These limits are set to increase in January 2026, allowing up to €1,000 per day and €5,000 per month for private individuals, as part of the system's gradual expansion. Fines for Non-Compliance Businesses that fail to integrate with IRIS or connect their POS and cash systems to AADE risk significant fines. Penalties vary based on the...