As of December 1st, 2025, the acceptance of account-to-account instant payment services (such as IRIS payments) is mandatory for business-to-consumer (B2C) transactions
This transition aims at simplifying daily transactions, reducing costs, improving tax compliance, enhancing transparency, and fully utilizing modern digital tools for instant payments.
To facilitate businesses, a specific technical method is defined for accepting account-to-account instant payments at the Point of Sale, through:
POS terminal
Electronic Invoicing Service Provider
The process is implemented through the updating of the interconnection protocols of previous decisions A.1098/2022 and A.1155/2023 (see relevant decisions, Α.1147/2025, Α.1160/2025)
Timetable & Obligations of Entities - Compliance Deadline until 28/11/2025
The compliance deadline was 28/11/2025. Specifically, for harmonization with the new specifications:
Payment Service Providers / Payment Instrument Providers (Acquirers & NSPs) must submit an updated Declaration of Compliance (Α.1161/2025)
Businesses importing/manufacturing/trading FEMs and manufacturing/technically supporting/installing and operating ERPs must submit an updated Declaration of Compatibility (Α.1159/2025)
Contact
For more information, you can contact the IAPR Taxpayer Service, my1521:
• By phone: At 1521, toll-free, working days from 7:00 to 20:00. • Digitally: At my1521 (24/7), by selecting: Greek Accounting Standards & myDATA Issues > Interconnection of Payment Instruments - Cash Register Systems > IRIS Issues.