§ 1.482-1(d)(2) Standard of comparability.

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In order to be considered comparable to a controlled transaction, an uncontrolled transaction need not be identical to the controlled transaction, but must be sufficiently similar that it provides a reliable measure of an arm’s length result. If there are material differences between the controlled and uncontrolled transactions, adjustments must be made if the effect of such differences on prices or profits can be ascertained with sufficient accuracy to improve the reliability of the results. For purposes of this section, a material difference is one that would materially affect the measure of an arm’s length result under the method being applied. If adjustments for material differences cannot be made, the uncontrolled transaction may be used as a measure of an arm’s length result, but the reliability of the analysis will be reduced. Generally, such adjustments must be made to the results of the uncontrolled comparable and must be based on commercial practices, economic principles, or statistical analyses. The extent and reliability of any adjustments will affect the relative reliability of the analysis. See § 1.482-1(c)(1) (Best method rule). In any event, unadjusted industry average returns themselves cannot establish arm’s length results.






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