(9)It should be possible for Member States to decide to allow the statutory auditors and the audit firms to provide certain tax and valuation services when such services are immaterial or have no direct effect, separately or in the aggregate, on the audited financial statements. Where such services involve aggressive tax planning, they should not be considered as immaterial. Accordingly, a statutory auditor or an audit firm should not provide such services to the audited entity. A statutory auditor or an audit firm should be able to provide non-audit services which are not prohibited under this Regulation, if the provision of those services has been approved in advance by the audit committee and if the statutory auditor or the audit firm has satisfied itself that provision of those services does not pose a threat to the independence of the statutory auditor or the audit firm that cannot be reduced to an acceptable level by the application of safeguards.