In accordance with conditions to be laid down pursuant to Article 322, any appropriations, other than those relating to staff expenditure, that are unexpended at the end of the financial year may be carried forward to the next financial year only.

Appropriations shall be classified under different chapters grouping items of expenditure according to their nature or purpose and subdivided in accordance with the regulations made pursuant to Article 322.

The expenditure of the European Parliament, the European Council and the Council, the Commission and the Court of Justice of the European Union shall be set out in separate parts of the budget, without prejudice to special arrangements for certain common items of expenditure.