Every effort should be made to determine pricing for the actual transaction as accurately delineated under the arm’s length principle. The various tools and methods available to tax administrations and taxpayers to do so are set out in the following chapters of these Guidelines. A tax administration should not disregard the actual transaction or substitute other transactions for it unless the exceptional circumstances described in the following paragraphs 1.142-1.145 apply ...

Every effort should be made to determine pricing for the actual transaction as accurately delineated under the arm’s length principle. The various tools and methods available to tax administrations and taxpayers to do so are set out in the following chapters of these Guidelines. A tax administration should not disregard the actual transaction or substitute other transactions for it unless the exceptional circumstances described in the following paragraphs 1.122-1.125 apply ...