Like the methods described in §§ 1.482-3, 1.482-4, 1.482-5, and 1.482-9, the comparable profit split relies exclusively on external market benchmarks. As indicated in § 1.482-1(c)(2)(i), as the degree of comparability between the controlled and uncontrolled transactions increases, the relative weight accorded the analysis under this method will increase. In addition, the reliability of the analysis under this method may be enhanced by the fact that all parties to the controlled transaction are evaluated under the comparable profit split. However, the reliability of the results of an analysis based on information from all parties to a transaction is affected by the reliability of the data and the assumptions pertaining to each party to the controlled transaction. Thus, if the data and assumptions are significantly more reliable with respect to one of the parties than with respect to the others, a different method, focusing solely on the results of that party, may yield more reliable results ...

The reliability of the results derived from the comparable profit split is affected by the quality of the data and assumptions used to apply this method. In particular, the following factors must be considered – (1) The reliability of the allocation of costs, income, and assets between the relevant business activity and the participants’ other activities will affect the accuracy of the determination of combined operating profit and its allocation among the participants. If it is not possible to allocate costs, income, and assets directly based on factual relationships, a reasonable allocation formula may be used. To the extent direct allocations are not made, the reliability of the results derived from the application of this method is reduced relative to the results of a method that requires fewer allocations of costs, income, and assets. Similarly, the reliability of the results derived from the application of this method is affected by the extent to which it is possible to apply the method to the parties’ financial data that is related solely to the controlled transactions. For example, if the relevant business activity is the assembly of components purchased from both controlled and uncontrolled suppliers, it may not be possible to apply the method solely to financial data related to the controlled transactions. In such a case, the reliability of the results derived from the application of this method will be reduced. (2) The degree of consistency between the controlled and uncontrolled taxpayers in accounting practices that materially affect the items that determine the amount and allocation of operating profit affects the reliability of the result. Thus, for example, if differences in inventory and other cost accounting practices would materially affect operating profit, the ability to make reliable adjustments for such differences would affect the reliability of the results. Further, accounting consistency among the participants in the controlled transaction is required to ensure that the items determining the amount and allocation of operating profit are measured on a consistent basis ...

If there are differences between the controlled and uncontrolled taxpayers that would materially affect the division of operating profit, adjustments must be made according to the provisions of § 1.482-1(d)(2) ...

The degree of comparability between the controlled and uncontrolled taxpayers is determined by applying the comparability provisions of § 1.482-1(d). The comparable profit split compares the division of operating profits among the controlled taxpayers to the division of operating profits among uncontrolled taxpayers engaged in similar activities under similar circumstances. Although all of the factors described in § 1.482-1(d)(3) must be considered, comparability under this method is particularly dependent on the considerations described under the comparable profits method in § 1.482-5(c)(2) or § 1.482-9(f)(2)(iii) because this method is based on a comparison of the operating profit of the controlled and uncontrolled taxpayers. In addition, because the contractual terms of the relationship among the participants in the relevant business activity will be a principal determinant of the allocation of functions and risks among them, comparability under this method also depends particularly on the degree of similarity of the contractual terms of the controlled and uncontrolled taxpayers. Finally, the comparable profit split may not be used if the combined operating profit (as a percentage of the combined assets) of the uncontrolled comparables varies significantly from that earned by the controlled taxpayers ...

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Whether results derived from application of this method are the most reliable measure of the arm’s length result is determined using the factors described under the best method rule in § 1.482-1(c) ...

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A comparable profit split is derived from the combined operating profit of uncontrolled taxpayers whose transactions and activities are similar to those of the controlled taxpayers in the relevant business activity. Under this method, each uncontrolled taxpayer’s percentage of the combined operating profit or loss is used to allocate the combined operating profit or loss of the relevant business activity ...

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The allocation of profit or loss under the profit split method must be made in accordance with one of the following allocation methods – (i) The comparable profit split, described in paragraph (c)(2) of this section; or (ii) The residual profit split, described in paragraph (c)(3) of this section ...

Guidance on how to determine whether the transactional profit split method is likely to be the most appropriate method is set out below, including the identification of certain features of a transaction which may be relevant. However it is important to note that there is no prescriptive rule for establishing when a particular transfer pricing method is the most appropriate method ...

Where comparables data are available, they can be relevant in the profit split analysis to support the division of profits that would have been achieved between independent parties in comparable circumstances. Comparables data can also be relevant in the profit split analysis to assess the value of the contributions that each associated enterprise makes to the transactions. In effect, the assumption is that independent parties would have split the combined profits in proportion to the value of their respective contributions to the generation of profit in the transaction. On the other hand, the external market data considered in valuing the contribution each associated enterprise makes to the controlled transactions will be less closely connected to those transactions than is the case with the other available methods ...

B.3. METHODS B .3 .1 .       Introduction to Transfer Pricing Methods B.3.1.1.                         This part of the chapter describes several transfer pricing methods that can be used to determine an arm’s length price and describes how to apply these methods in practice. Transfer pricing methods (or “methodologies”) are used to calculate or test the arm’s length nature of prices or profits. Transfer pricing methods are ways of establishing arm’s length prices or profits from transactions between associated enterprises. The transaction between related enterprises for which an arm’s length price is to be established is referred to as the “controlled transaction”. The application of transfer pricing methods helps assure that transactions conform to the arm’s length standard. It is important to note that although the term “profit margin” is used, companies may also have legitimate reasons to report losses at arm’s length. Furthermore, transfer pricing methods are not determinative in and of themselves. If an associated enterprise reports an arm’s length amount of income, without the explicit use of one of the recognized transfer pricing methods, this does not mean that its pricing should automatically be regarded as not being at arm’s length and there may be no reason to impose adjustments. B.3.1.2.           Selection of Methods (How, Why and Use of Methods) B.3.1.2.1.            The selection of a transfer pricing method serves to find the most appropriate method for a particular case. Considerations involved in selecting a method can include: the respective strengths and weaknesses of each method; the nature of the controlled transaction; the availability of reliable information (in particular on uncontrolled comparables) needed to apply the selected method; and the degree of comparability between the controlled and uncontrolled transactions. B.3.1.2.2.            The starting point in selecting a method is an understanding of the controlled transaction (inbound or outbound), in particular based on the functional analysis which is necessary regardless of which transfer pricing method is selected. The functional analysis is a major part of selecting the transfer pricing method as it helps: To identify and understand the intra-group transactions; To identify the characteristics that would make a particular transaction or function suitable for use as a comparable; To determine any necessary adjustments to the comparables; To check the relative reliability of the method selected; and Over time, to determine if modification of the method is appropriate because the transaction, function, allocation of risks or allocation of assets have been modified. B.3.1.2.3.            The major components of a functional analysis are analyzes of the functions, assets and risks. The functional analysis is described and discussed in detail in Chapter B.2, at Paragraph B.2.3.2.7. Appendix I provides examples of a functional analysis for a manufacturing business and a distribution business. A summary is provided here for context in the case of selection of appropriate methods. B.3.1.2.4.            The functions performed: The functional analysis describes the activities performed such as design, purchasing, inbound logistics, manufacturing, research and development (R&D), assembling, inventory management, outbound logistics, marketing and sales activities, after sale services, supporting activities, services, advertising, financing and management, etc. The functional analysis must specify which party performs each activity and in case both parties are involved in performing an activity it should provide for the relevant differences; for example if both have inventories but Company A holds inventories for a period of up to two years whereas Company B holds inventories for a period of one month. The activities that add most value must be identified and should be discussed in more detail. B.3.1.2.5.            The risks undertaken: The functional analysis should identify risks undertaken. Examples are: financial risk (currency, interest rate, funding risks etc.) credit and collection risk (trading credit risk, commercial credit risk), operational risk (systems failure risk), commodity price risk, inventory risk and carrying costs, R&D risk, environmental and other regulatory risks, market risk (country political risk, reliability of customers, fluctuation in demand and prices) and product risk (product liability risk, warranty risk and costs and contract enforceability). A risk-bearing party would expect to have higher earnings than a non-risk bearing party, and will incur the expenses and perhaps related loss if and when risk materializes. B.3.1.2.6.  The assets used or contributed: The functional analysis must identify and distinguish between tangible and intangible assets. Tangible assets such as property, plant and equipment have to be financed and an investment in such capital assets would usually be expected to earn a long term return based on the use and risk level  of the investment. Intangible assets are very important as substantial competitive advantage is often achieved by the use of intangible assets. Some intangibles have legal protection (e.g. patents, trademarks, trade names) but other intangibles with less legal protection may be equally important and valuable (e.g. know-how, trade secrets, marketing intangibles, etc.). B.3.1.2.7.            Interplay of above factors: Today, in a multinational group, operations tend to be more integrated across jurisdictional boundaries and the functions, risks and assets are often shared between entities in different jurisdictions. This makes functional analyzes both more difficult and more necessary. The functional analysis can help identify which functions, risks and assets are attributable to the various related parties. For example, the functional analysis may reveal that one company performs one particular function but the cost of this  is borne by the other party to the transaction. The functional analysis could highlight that situation and consider the legal allocation of risk and the economic substance of the transaction. Another example would be where a company performs one particular function and bears the cost thereof but the benefit also accrues to the other party to the transaction. The functional analysis could emphasize that situation and consider which party bears the risk in legal terms and which party bears the risk according to the economic substance of the transaction. The functional analysis typically includes a discussion of the industry in which the tested party operates, the contractual terms of the transaction at issue, the economic circumstances of the parties and the business strategies they employ. The functional analysis helps to identify ...