1. The Court of Auditors shall examine the accounts of all revenue and expenditure of the Union. It shall also examine the accounts of all revenue and expenditure of all bodies, offices or agencies set up by the Union in so far as the relevant constituent instrument does not preclude such examination.
The Court of Auditors shall provide the European Parliament and the Council with a statement of assurance as to the reliability of the accounts and the legality and regularity of the underlying transactions which shall be published in the Official Journal of the European Union. This statement may be supplemented by specific assessments for each major area of Union activity.
2. The Court of Auditors shall examine whether all revenue has been received and all expenditure incurred in a lawful and regular manner and whether the financial management has been sound. In doing so, it shall report in particular on any cases of irregularity.
The audit of revenue shall be carried out on the basis both of the amounts established as due and the amounts actually paid to the Union.
The audit of expenditure shall be carried out on the basis both of commitments undertaken and payments made.
These audits may be carried out before the closure of accounts for the financial year in question.
3. The audit shall be based on records and, if necessary, performed on the spot in the other institutions of the Union, on the premises of any body, office or agency which manages revenue or expenditure on behalf of the Union and in the Member States, including on the premises of any natural or legal person in receipt of payments from the budget. In the Member States the audit shall be carried out in liaison with national audit bodies or, if these do not have the necessary powers, with the competent national departments. The Court of Auditors and the national audit bodies of the Member States shall cooperate in a spirit of trust while maintaining their independence. These bodies or departments shall inform the Court of Auditors whether they intend to take part in the audit.
The other institutions of the Union, any bodies, offices or agencies managing revenue or expenditure on behalf of the Union, any natural or legal person in receipt of payments from the budget, and the national audit bodies or, if these do not have the necessary powers, the competent national departments, shall forward to the Court of Auditors, at its request, any document or information necessary to carry out its task.
In respect of the European Investment Bank's activity in managing Union expenditure and revenue, the Court's rights of access to information held by the Bank shall be governed by an agreement between the Court, the Bank and the Commission. In the absence of an agreement, the Court shall nevertheless have access to information necessary for the audit of Union expenditure and revenue managed by the Bank.
4. The Court of Auditors shall draw up an annual report after the close of each financial year. It shall be forwarded to the other institutions of the Union and shall be published, together with the replies of these institutions to the observations of the Court of Auditors, in the Official Journal of the European Union.
The Court of Auditors may also, at any time, submit observations, particularly in the form of special reports, on specific questions and deliver opinions at the request of one of the other institutions of the Union.
It shall adopt its annual reports, special reports or opinions by a majority of its Members. However, it may establish internal chambers in order to adopt certain categories of reports or opinions under the conditions laid down by its Rules of Procedure.
It shall assist the European Parliament and the Council in exercising their powers of control over the implementation of the budget.
The Court of Auditors shall draw up its Rules of Procedure. Those rules shall require the approval of the Council.