Is it permissible to use a Visa card to pay exam fees, covering the full amount to avoid any fines or interest, given the difficulty of obtaining US dollars in Egypt and that the Visa card is the only means of payment in dollars abroad?

For credit cards to be permissible, they must not include a condition for paying interest or a penalty for late payment; otherwise, obtaining and using them would be impermissible. However, using a Visa card that contains an interest-bearing condition, provided that the amount is paid in advance, is permissible due to necessity and the absence of an alternative. This is what some scholars have permitted concerning opening accounts in interest-based banks out of necessity.