Consistency in accounting.
(B) Consistency in accounting. The degree of consistency in accounting practices between the controlled transaction and the uncontrolled comparables that materially affect the gross profit margin affects the reliability of the result. Thus, for example, if differences in inventory and other cost accounting practices would materially affect the gross profit margin, the ability to make reliable adjustments for such differences would affect the reliability of the results. Further, the controlled transaction and the uncontrolled comparable should be consistent in the reporting of items (such as discounts, returns and allowances, rebates, transportation costs, insurance, and packaging) between cost of goods sold and operating expenses.