One important issue with such before-and-after comparisons is that a comparison of the profits from the post-restructuring controlled transactions with the profits made in controlled transactions prior to the restructuring would not suffice given Article 9 of the OECD Model Tax Convention provides for a comparison to be made with uncontrolled transactions. Comparisons of a taxpayer’s controlled transactions with other controlled transactions are irrelevant to the application of the arm’s length principle and therefore should not be used by a tax administration as the basis for a transfer pricing adjustment or by a taxpayer to support its transfer pricing policy ...

One important issue with such before-and-after comparisons is that a comparison of the profits from the post-restructuring controlled transactions with the profits made in controlled transactions prior to the restructuring would not suffice given Article 9 of the OECD Model Tax Convention provides for a comparison to be made with uncontrolled transactions. Comparisons of a taxpayer’s controlled transactions with other controlled transactions are irrelevant to the application of the arm’s length principle and therefore should not be used by a tax administration as the basis for a transfer pricing adjustment or by a taxpayer to support its transfer pricing policy ...