1.The purpose of these model mandatory disclosure rules is to provide tax administrations with information on CRS Avoidance Arrangements and Opaque Offshore Structures, including the users of those Arrangements and Structures and those involved with their supply. Information disclosed pursuant to the application of these model rules can be used both for compliance purposes and to inform future tax policy design. These rules should also have a deterrent effect against the design, marketing and use of arrangements covered by the rules. 2. The model rules require an Intermediary or user of a CRS Avoidance Arrangement or Opaque Offshore Structure to disclose certain information to its tax administration. Where such information relates to users that are resident in another jurisdiction it would be exchanged with the tax administration(s) of that jurisdiction in accordance with the terms of the applicable international legal instrument. 3. The mandatory disclosure rules do not affect the substantive provisions of a jurisdiction’s CRS Legislation or impact on any reporting outcomes under the CRS. Rather these rules are information gathering tools that seek to bolster the integrity of the CRS by deterring advisors and other intermediaries from promoting certain schemes. The rules seek to accomplish this by providing tax administrations and policy makers with information on schemes, their users and suppliers, for use in compliance activities, exchange with treaty partners and tax policy design. 4. Consistent with the concepts on mandatory disclosure articulated in the BEPS Action 12 Report the model rules are not limited to situations of non-compliance with the tax law (including the rules on CRS reporting). Thus, a disclosure under the rules does not necessarily imply a violation of any tax rule and will not always result in the tax administration taking compliance action in respect of a disclosed Arrangement. Equally, the fact that a tax administration does not respond to a disclosure does not imply any acceptance of the validity or tax treatment of the Arrangement by the tax administration. Jurisdictions implementing these model rules would need to take into account domestic specificities in their own CRS Legislation and the interaction of these model rules with existing anti-avoidance rules.