Keurhout's aims are:
The minimum requirements of the Dutch government (1997) align with the international developments in this area: the FSC Principles & Criteria, the Criteria & Indicators of ITTO (International Tropical Timber Organisation), the Helsinki process and the Forest Principles of the UNCED (United Nations Conference on Environment and Development), Rio de Janeiro 1992. These are the basis for the Keurhout requirements for sustainable forest management (KH-SFM sub-protocol).
The Keurhout requirements relating to legality (KH-LET sub-protocol) have been developed on the basis of the study of relevant initiatives and experience and consultation with selected international representatives of various related and interested organisations (public authorities, social and environmental organisations, certification institutions, scientists). The standard was established as a practical workable result of sometimes varying opinions, under the responsibility of the NTTA.
The Keurhout system reviews (KH-SYS sub-protocols) are based on a combination of the KH-LET review (for system legality) and/or KH-SFM review (for system sustainability). The system reviews set additional requirements at system level.