TNMM and the Selection of the Profit Level Indicator:The Urgency of GPM in Rescuing ROS
The selection of the Profit Level Indicator (PLI) is one of the important aspects in applying the Transactional Net Margin Method (TNMM) to test the arm's length nature of an affiliated transaction. However, the selection of an indicator cannot be separated from the characteristics of the transaction, the functional analysis, and the quality of the financial data used. This study discusses the use of Gross Profit Margin (GPM) and Return on Sales (ROS) in the Transfer Pricing dispute of PT YZN for the 2020 Fiscal Year. Based on the case documents, the Taxpayer's GPM of 30.16% was above the interquartile range of the comparable companies of 5.55%–16.07%, while the ROS of 1.73% fell within the comparable range of 1.37%–2.10%. The difference in the ROS test result mainly relates to the treatment of Other Income amounting to Rp5.428 billion, which changes the ROS to -12.14% if not taken into account in operating profit. This study shows that GPM and ROS should not always be positioned as mutually substitutable indicators, but can instead provide complementary perspectives on the transaction being tested. Accordingly, the selection of a PLI needs to be based on a clear analytical objective, be consistent with the characteristics of the transaction and the Taxpayer's functions, assets, and risks, and be supported by relevant and traceable financial data. The quality of benchmarking is determined not solely by the position of the margin within the arm's length range, but also by the accuracy of the data processing and the strength of the evidence underlying the conclusion regarding the arm's length nature of the transaction.