218. The revenue sourcing rules determine the revenue that would be treated as deriving from a particular market jurisdiction. The rules would be relevant in applying the scope rules, (see section 2.3.2), the nexus rules (see Chapter 3) and the Amount A formula (see Chapter 6). They are reflective of the particularities of ADS and CFB and more broadly were designed to balance the need for accuracy with the ability of in-scope MNEs to comply, without incurring disproportionate compliance costs. This is proposed to be achieved through the articulation of sourcing principles, supported by a range of specific indicators, subject to a defined hierarchy (likely to be of particular importance in connection with third party distribution). This approach of providing a range of possible indicators within the hierarchy recognises the different ways MNEs currently collect information in the context of their business model, while still providing certainty to MNEs and tax administrations that the defined set of acceptable specified indicators can be relied upon to provide acceptable outcomes.
219. To source the relevant in-scope revenue to a market jurisdiction, a sourcing principle would be identified for each type of in-scope revenue, accompanied by a list of the acceptable specific indicators an MNE will use to apply the principle and identify the jurisdiction of source. For example, for the direct sale of consumer goods, the principle would be to source the revenue based on the jurisdiction of final delivery of the goods to the consumer, and the acceptable indicator would be the jurisdiction of the retail store front where the consumer good is sold or shipping address.
220. The acceptable indicators would be organised in a hierarchy. The MNE should generally use the indicator that is first in the hierarchy, as this will be the most accurate. However, an MNE may use an alternative indicator that appears second in the hierarchy, if the first indicator was not reasonably available or if the MNE can justify that the first indicator was unreliable, and so on with the remaining indicators.
221. This approach is intended to ensure that there is sufficient flexibility to accommodate the different ways that MNEs collect information. The rules provide guidance on when an indicator can be considered to be unavailable or unreliable, to reduce the potential for disputes for tax administrations and taxpayers alike.
222. Information would be considered unavailable if it is not within the MNE’s possession, and reasonable steps have been taken to obtain it but have been unsuccessful. Information would be considered unreliable if the MNE can justify that the indicator is not a true representation of the principle in the source rule.
223. The MNE would need to justify and document its approach and include it in the standardised documentation package to be developed as part of the broader work on tax certainty (see Chapter 9). It is expected that an in-scope MNE will need to retain documentation:
describing the functioning of its internal control framework related to revenue sourcing;
containing aggregate and periodic information on results of applying the indicators, for each type of revenue and in each jurisdiction; and
explaining the indicator used, and, if relevant, why a secondary indicator was applied instead (such as the steps taken to obtain information or why a primary indicator was considered unreliable).
224. This information will remain systemic level data. MNEs would thus not be expected to keep a record of all data points on the indicators for every transaction (which may cause concerns relating to privacy) or use of the service, but rather to establish a robust internal control framework on which the tax authorities can rely to conduct their audit, supported by the underlying results of applying the indicators at an aggregate level, as well as retaining a sufficient sample of the underlying data points to justify that the internal control framework is robust.
225. As it is critical to understand the sourcing rule (and its list of indicators) in the context of each relevant business model, commentary accompanies the revenue sourcing rules to further explain the meaning of the different indicators, and provide guidance for MNE’s administration. The status of the Commentary in the context of implementation will be considered in due course. The Commentary is set out in section 4.3, following the complete set of rules.