Group Loan Interest Dispute: Why PT A Successfully Overturned the Tax Office's WHT 23 Correction at the Tax Court

PT A Dispute: The Supremacy of Internal CUP in Affiliate Loan Interest

The tax dispute between PT A and the Respondent centered on the correction of the Article 23 Income Tax (WHT 23) base for December 2017, amounting to IDR 3,933,709,536 regarding intercompany loan interest expenses. The Respondent applied this correction as a secondary adjustment following an interest expense correction at the Corporate Income Tax level, arguing that the interest rate paid to PT SSKM exceeded the arm’s length rate. During the audit, the Respondent utilized external benchmarks, specifically the average USD working capital and investment loan rates from Bank Indonesia, claiming that PT A failed to provide adequate documentation of the fair market price formation process in its Transfer Pricing Documentation.

The Core Conflict: External Benchmarks vs. Internal CUP Method

The core conflict arose when PT A demonstrated that the interest rate of 1-month LIBOR plus a 4% margin was based on valid internal comparable data. PT A presented evidence of a loan facility from an independent third party, PT BONT, featuring an identical interest structure (LIBOR + 4% margin). According to the transfer pricing hierarchy in PER-32/PJ/2011, the use of the Comparable Uncontrolled Price (CUP) method with internal data must be prioritized over external comparables if high comparability exists. The Respondent was deemed to have failed in considering evidence that the affiliate loan agreement was executed under terms identical to those of a commercial bank loan.

Judicial Rationale: Validation of Documentation and Arm's Length Principle

The Board of Judges, in its legal consideration, agreed with the Petitioner’s argument that the Arm’s Length Principle (ALP) was satisfied through internal benchmarking. The Court found the Respondent’s claim—that the Petitioner lacked documentation—to be baseless, as transaction details, loan agreements, and interest rate comparisons had been submitted since the audit and objection stages. Given the tangible proof that the affiliate interest rate matched the rate from an independent banking institution, the Respondent's correction became legally and economically irrelevant.

Strategic Takeaways for Taxpayers

This ruling carries significant implications for tax practice, particularly in reaffirming that taxpayers with financial transactions similar to those with third parties (banks) hold a strong position to apply the Internal CUP method. It serves as a precedent that tax authorities cannot unilaterally use industry averages or central bank data when more specific and accurate internal comparables are available. For other taxpayers, this case highlights the critical need to synchronize Transfer Pricing Documentation with third-party contracts to mitigate the risk of secondary adjustments in WHT 23.

In conclusion, the Board of Judges decided to grant the Petitioner's appeal in its entirety. This victory underscores that robust documentation and the selection of the correct transfer pricing method, in alignment with regulatory hierarchies, are the primary keys to winning tax litigation disputes involving affiliated transactions.