5. Member States may permit credit institutions that offer payment accounts with basic features to refuse an application for such an account where a consumer already holds a payment account with a credit institution located in their territory which allows him to make use of the services listed in Article 17(1), save where a consumer declares that he has received notice that a payment account will be closed.
In such cases, before opening a payment account with basic features, the credit institution may verify whether the consumer holds or does not hold a payment account with a credit institution located in the same Member State which enables consumers to make use of the services listed in Article 17(1). Credit institutions may rely on a declaration of honour signed by consumers for that purpose.