How can one know the actual fees for issuing a credit card from the Islamic bank, and are they the bank's responsibility, or is there a way to inquire about them?

We have previously clarified the permissibility of imposing a fixed service fee in exchange for the customer's utilization of the credit card and the services and benefits it includes, and that the variation in fees among different card categories does not affect this, as long as they are actual fees. To ascertain whether the fees are actual and not a pretense for usury, one can consult the Sharia Supervisory Board of the bank with which they deal, or refer to experienced and specialized individuals among the bank's employees or others.