In 2023, the French have lost nearly 600 million euros in “hidden” fees. In addition to traditional transaction costs, "hidden" fees are sometimes charged to customers.
These are exchange rate increases when converting currencies, paying by card abroad but also making an international transfer. To avoid unpleasant surprises, it is better to ask your bank for details of all the bank charges that will apply abroad before leaving. The regulation on cross-border payments should require all banks and all payment services to clearly communicate all conversion fees.