The Tax Department also reminded that under Article 30A of the Assessment and Collection of Taxes Law, businesses included in a specific list, are obliged to accept card payments for the completion of payment transactions. The Tax Department also emphasizes that businesses are prohibited from charging consumers any additional amount to process the transaction.
Failure by businesses to comply with these regulations may result in a fine of up to four thousand euros (€4,000).
Source www.pconstantinou.com