As regards the budgetary principles, in particular the principle of unity, the requirement that interest on pre-financing to be repaid to the budget be identified means that any pre-financing which remains the property of the Communities must be identified. Such pre-financing remains the property of the institution unless the basic act, within the meaning of Article 49 of the Financial Regulation, provides otherwise and unless it is paid under a procurement contract, or to staff or members of the institutions, or to the Member States. This rule should be spelled out according to the type of management (direct or indirect centralised management and shared management). It does not apply to joint management since in such cases the Community funds are merged with the funds of the international organisation. Where pre-financing which remains the property of the Communities yields interest, this interest should be paid to the budget as miscellaneous revenue.
The Commission shall implement the budget:
(a) on a centralised basis;
(b) by shared or decentralised management; or
(c) by joint management with international organisations.
2. Where the Commission implements the budget on a centralised basis, implementation tasks shall be performed either directly by its departments or indirectly, in accordance with the provisions of Articles 54 to 57.
3. Where the Commission implements the budget by shared management, implementation tasks shall be delegated to Member States in accordance with the provisions of Titles I and II of part two.