The Failure of CUP Method in Tax Court: Why Judges Rejected ICIS Data as a Benchmark in the PT MCPI Case?

Transfer Pricing Dispute of PT MCPI: External CUP Method Failure and Raw Material COGS Correction

The transfer pricing dispute of PT MCPI centered on the taxpayer's inability to prove product comparability using the external Comparable Uncontrolled Price (CUP) method. The tax authority issued a Cost of Goods Sold (COGS) correction amounting to USD 295,360.00 regarding affiliated raw material purchases, asserting that the Transactional Net Margin Method (TNMM) is more reliable given the functional complexities and the absence of identical benchmark data in the open market.

The Core Conflict: ICIS Market References for Cosmonate and Interquartile Range (IQR) Discrepancies

The core conflict stemmed from fundamental differences in methodology and benchmark selection. PT MCPI utilized ICIS publication prices as market references for Cosmonate products; however, the Respondent rejected this data due to significant discrepancies in product quality specifications and payment terms that were substantially longer than independent transactions. Furthermore, a technical debate arose regarding the Interquartile Range (IQR) calculation, where the Petitioner proposed 10 comparable companies, while the Respondent only accepted 3 after performing a rigorous functional analysis.

Legal Considerations of the Board of Judges: Formal Defects and TNMM as the Most Appropriate Method

The Board of Judges, in its legal considerations, decided to uphold the tax authority's correction. The Judges ruled that the internal documents submitted by the Petitioner lacked sufficient evidentiary weight due to formal defects (being undated and unsigned). Moreover, the Court opined that the CUP method is highly sensitive to differences in product characteristics and contractual terms; in this case, adjustments for such differences could not be accurately demonstrated, making TNMM the Most Appropriate Method.

Ruling Implications: International Data Providers vs. Valid Physical Evidence in TP Doc

The implication of this ruling reinforces that using market prices from international data providers (such as ICIS) does not automatically guarantee the acceptance of the CUP method if the taxpayer cannot provide convincing adjustments for transactional variations. Taxpayers must ensure that Transfer Pricing Documentation (TP Doc) is supported by legally valid physical evidence and in-depth comparability analysis to prevent method reclassification by tax authorities.

A Comprehensive Analysis and the Tax Court Decision on This Dispute Are Available Here