Provisions on tariff exchange rate
Article 48
1. The value of the euro, where required in accordance with Article 53(1)(b) of the Code, shall be fixed once a month. The exchange rate to be used shall be the most recent rate set by the European Central Bank prior to the penultimate day of the month and shall apply throughout the following month. However, where the rate applicable at the start of the month differs by more than 5 % from the rate set by the European Central Bank prior to the 15th of that same month, the latter rate shall apply from the 15th until the end of the month in question. 2. Where the conversion of currency is necessary for any of the reasons referred to in Article 53(2) of the Code, the value of the euro in national currencies to be applied shall be the rate set by the European Central Bank on the first working day of October; this rate shall apply with effect from 1 January of the following year. 3. Member States may maintain unchanged the value in national currency of the amount determined in euro if, at the time of the annual adjustment, the conversion of that amount, leads to an alteration of less than 5 % in the value expressed in national currency. Member States may round upwards or downwards to the nearest decimal point the sum arrived at after conversion.