Only IDR 73 Million Undisproved: A Critical Lesson from the Partial Loss of a Construction Service Taxpayer in a Final Income Tax Dispute.

Equalization Test for Final Construction Service Income Tax: Material Evidence in the PT AB Case

The Indonesian tax regulator consistently applies an equalization test between cost line items in financial statements and the Tax Base (DPP) in the reporting of Final Income Tax (PPh) Article 4 paragraph (2), particularly for Construction Service providers. The case of PT AB highlights the complexity and litigation consequences when an equalization inconsistency amounting to IDR 929,188,937.00 is identified, forcing the Taxpayer to strongly prove that these costs had already been subject to the correct Withholding Tax (WHT) provisions in accordance with Article 4 paragraph (2) of the Income Tax Law and Government Regulation (PP) 51/2008.

Context and Case Profile

This tax dispute originated from the issuance of an Underpayment Tax Assessment Letter (SKPKB) for Final Income Tax Article 4(2) for the March 2018 tax period. The positive correction by the Directorate General of Taxes (DGT) was based on the finding of a substantial difference between the total costs incurred by the Taxpayer and the reported Final Income Tax Article 4(2) Tax Base for Construction Services, assuming the difference represented unwithheld construction service income. Although the Taxpayer filed an objection, the DGT maintained the correction because the Taxpayer was deemed unable to present convincing evidence at the administrative level.

Arguments and Defense: Refuting Double Taxation

The DGT argued that the non-conformity in the equalization result was authentic proof of the payable Final Income Tax. The DGT emphasized that the lack of adequate supporting evidence during the examination and objection stages provided the juridical basis to maintain the correction under Article 12 paragraph (3) of the General Tax Provisions and Procedures Law (UU KUP). Conversely, the Taxpayer refuted the correction, arguing that the corrected value of IDR 929.1 million was not entirely unwithheld Final Income Tax Article 4(2). The Taxpayer presented evidence at the appeal level showing that the majority of this value, IDR 855.6 million, had been subject to other types of WHT, namely PPh Article 21 and PPh Article 23, with a small portion already subject to and reported under PPh Final Article 4(2). The Taxpayer concluded that the DGT’s correction resulted in double taxation.

Judicial Resolution and Findings

The Tax Court Panel of Judges, in its decision, acted as the reviewer of facts and evidence. The Panel affirmed that the burden of proof rested with the Taxpayer. Based on the visum et repertum (evidence review) in the hearing, the Panel concluded that the Taxpayer successfully disproved the substance of the correction for the value of IDR 855,688,800.00. The discovery of withholding slips (WHT slips) for PPh 21 and PPh 23 and relevant Final PPh deposit slips overrode the assumption of the DGT's correction for that portion. However, the Panel had to reject the Taxpayer's claim for the remaining corrected value of IDR 73,500,137.00 due to the lack of strong supporting evidence. The final decision partially granted the appeal, reducing the Final Income Tax Base to only IDR 73,500,137.00.

Implications for Construction Service Tax Practice

This decision has significant implications for Construction Service tax practices. First, it reaffirms that while the DGT has the authority to make equalization-based corrections, these corrections can be overturned if the Taxpayer is able to present accurate and convincing WHT slips/deposit slips to the Panel of Judges. Second, the Taxpayer's failure to prove a small portion of the correction (IDR 73 million) serves as a critical lesson: there is zero tolerance for completeness of documentation. All expenses that could potentially be subject to WHT must be fully documented from the outset, not just at the time of examination. This decision encourages Taxpayers to be more proactive in preparing internal equalization working papers regularly.