The multiannual financial framework and the budget shall be drawn up and implemented in euro and the accounts shall be presented in euro. However, for the cash-flow purposes referred to in Article 77, the accounting officer and, in the case of imprest accounts, the imprest administrators, and, for the needs of the administrative management of the Commission and the EEAS, the authorising officer responsible, shall be authorised to carry out operations in other currencies.

Without prejudice to specific provisions laid down in sector-specific rules, or in specific contracts, grant agreements, contribution agreements and financing agreements, conversion by the authorising officer responsible shall be made using the daily euro exchange rate published in the C series of the Official Journal of the European Union of the day on which the payment order or recovery order is drawn up by the authorising department.

If no such daily rate is published, the authorising officer responsible shall use the one referred to in paragraph 3.

For the purposes of the accounts provided for in Articles 82, 83 and 84, conversion between the euro and another currency shall be made using the monthly accounting exchange rate of the euro. That accounting exchange rate shall be established by the accounting officer of the Commission by means of any source of information regarded as reliable, on the basis of the exchange rate on the penultimate working day of the month preceding that for which the rate is established.

Currency conversion operations shall be carried out in such a way as to avoid having a significant impact on the level of the Union co-financing or a detrimental impact on the budget. Where appropriate, the rate of conversion between the euro and other currencies may be calculated using the average of the daily exchange rate in a given period.