Card company Mastercard has been fined €570m for obstructing access to cross-border card payment services.
That is according to the European Commission, which has imposed the fine following an investigation.
It said the company prevented shops from getting lower fees available in other European countries, in breach of EU antitrust rules.
Mastercard is the second largest card scheme in the European Economic Area (EEA) in terms of consumer card issuing and value of transactions.
Under the MasterCard scheme, banks offer card payments-related services under common card brands Mastercard and Maestro.
Mastercard acts as a platform through which issuing banks provide cardholders with payment cards, ensure the completion of the card payment transaction and transfer funds to the retailer's bank.
European consumers and businesses make more than half of their non-cash payments through cards.
When a consumer uses a debit or credit card, the bank of the retailer pays a fee called an 'interchange fee' to the cardholder's bank.
The bank passes this fee on to the retailer who includes it, like any other cost, in the final prices for all consumers - even those who do not use cards.
Mastercard's rules obliged acquiring banks to apply the interchange fees of the country where the retailer was located.
Image: European Commission
Before December 2015, when the Interchange Fee Regulation introduced caps, fees varied considerably from one country to another.
As a result, retailers in high-interchange fee countries could not benefit from lower interchange fees offered by an acquiring bank located in another member state.
Commissioner Margrethe Vestager, in charge of competition policy, said: "European consumers use payment cards every day, when they buy food or clothes or make purchases online.
"By preventing merchants from shopping around for better conditions offered by banks in other member states, Mastercard's rules artificially raised the costs of card payments, harming consumers and retailers in the EU."
European Competition Commissioner Margrethe Vestager pictured in Dublin | Image: European Commission
In April 2013, the commission opened a formal antitrust investigation against Mastercard to assess whether these rules on 'cross-border acquiring' were in breach of EU antitrust rules.
The investigation found that because of Mastercard's cross-border acquiring rules retailers paid more in bank services to receive card payments than if they had been free to shop around for lower-priced services.
This led to higher prices for retailers and consumers, to limited cross-border competition and to an artificial segmentation of the single market.
The commission found that Mastercard's rules prevented retailers from benefitting from lower fees and restricted competition between banks cross border, in breach of EU antitrust rules.
The infringement ended when Mastercard amended its rules in view of the entry into force of the Interchange Fee Regulation.
As a result, the commission decided to impose a fine on Mastercard.
Mastercard cooperated with the commission, acknowledging the facts and the infringements of EU competition rules.
The commission gave Mastercard a 10% fine reduction in return for this cooperation.
