When you make a purchase or withdraw cash in a currency other than the euro, the wholesale rate of the currency used in either the Mastercard Europe or Visa International system (depending on the card) is applied. A currency adjustment of 2,25% of the transaction amount at the most is added to the wholesale rate.
The wholesale rate is determined according to the date on which the transaction is transmitted to Mastercard Europe or Visa International. The exchange rate used for a card transaction is given in the transaction details on the account statement of the account linked to the card or in the credit card invoice. You can review indicative exchange rates on the international pages of Mastercard and Visa.