4. Outsourcing and other external costs

The subcontracted activities category comprises a broad range of outsourced activities related to the airport processes, such as the outsourcing of bus transporting services, the people with reduced mobility process and the lost & found process.

Auditor’s fees

The auditor’s fees concern activities carried out at Schiphol Group and the consolidated group companies by the audit firm as referred to in Section 1(1) of the Audit Firms Supervision Act and represent the fees charged by the entire network of which the audit firm is part. The audit of the financial statements includes the consolidated financial statements and the audit of the entities that are part of the consolidation. The other audit services rendered by the auditor include the assurance report on Socio-economic Accountability, a review of interim financial information, an audit of financial statements for regulatory purposes, several agreed upon procedures for regulatory purposes and procedures for the EMTN prospectuses. The fees of KPMG Accountants N.V. amount to 1.5 million euros (2017: 1.2 million euros) while the activities performed by other members of the KPMG network amount to 0.1 million euros (2017: 0.2 million euros).

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