Can Accounts Receivable Flow Testing Be Used as a Basis for Tax Adjustments? The PT SI Decision Provides the Answer!

The corporate income tax dispute involving PT SI serves as an important case study highlighting the weaknesses of using Accounts Receivable/ Cash Flow Testing as the basis for tax adjustments and the strength of withholding proof under Article 21 Income Tax for employee allowances/facilities. In this case, the Tax Authority (DJP) initially issued a Tax Underpayment Assessment (SKPKB) for the 2013 Fiscal Year, with the disputed net income difference exceeding IDR 6.7 billion. The dispute involved five adjustment items: Sales/Revenue, Salaries Japan, Amortization Allowance, Positive Fiscal Adjustments for Depreciation, and the rejection of further adjustments in the form of Negative Fiscal Adjustments.

DJP attacked PT SI using two main audit approaches: computational and substantive testing. The Sales/Revenue adjustment amounting to IDR 3.57 billion was based on Accounts Receivable/Cash Flow Testing, a method DJP considered sufficient to indicate unreported revenue. On the expense side, DJP challenged the Salaries Japan cost (IDR 193.3 million) as a non-deductible benefit-in-kind (natura), corrected depreciation differences, and rejected PT SI’s claim for Negative Fiscal Adjustments (IDR 1.8 billion) due to the absence of supporting documents. Ultimately, the case tested the extent to which the Tax Authority may rely on computational methods without strong commercial documentation, and how proof of Article 21 withholding can validate employee-related allowances.

PT SI countered these allegations through commercial documentation and proof of Article 21 withholding. Regarding Sales/Revenue, PT SI successfully convinced the Panel that adjustments based on Accounts Receivable/Cash Flow Testing must be supported by clear commercial evidence such as invoices, tax invoices, and counterparty confirmations—none of which were provided by DJP. For the Salaries Japan expense, PT SI proved that the cost represented housing facility allowances for expatriate employees and had been subjected to Article 21 withholding, confirming that the expense was deductible. Likewise, concerning the Amortization Allowance for Bad Debt, PT SI clarified that although the General Ledger description was confusing, the expense substantively represented amortization of operational software. This substantive proof and Article 21 compliance led the Panel to cancel all three major adjustments.

The Tax Court Panel granted PT SI’s appeal in part. The Panel agreed with PT SI that the adjustments for Sales/Revenue, Salaries Japan, and Amortization Allowance were unsupported by adequate evidence from DJP, resulting in the cancellation of adjustments totaling IDR 3.93 billion. However, the Panel upheld the adjustment on Commercial Depreciation exceeding Fiscal Depreciation (IDR 950.7 million) due to asset classification differences that PT SI could not substantiate. Similarly, the Panel upheld the rejection of PT SI’s claim for Negative Fiscal Adjustments (IDR 1.8 billion), which was a follow-on adjustment from the depreciation issue, because PT SI failed to present supporting data/documents.

This decision provides an important lesson for taxpayers: documentation consistency is the cornerstone of a strong defense. PT SI’s victory demonstrates that DJP’s Accounts Receivable Flow Testing cannot stand when taxpayers can present clear commercial evidence and valid supporting documents. Moreover, employee facility/benefit expenses may be fiscally deductible when taxpayers can prove that such benefits have been treated as Article 21 taxable income for the recipients. Conversely, taxpayers must be meticulous in substantiating every Fiscal Adjustment item (both Positive and Negative), as gaps in documentation for technical items can become vulnerabilities exploited by DJP and upheld by the Court.