Tax Alert! Unreported Input Tax Can Trigger Revenue Corrections via Gross-Up Techniques

Tax Correction Authority and the Gross-Up Technique

The Director General of Taxes is authorized to correct the VAT Base (DPP) through indirect methods, such as the gross-up technique, if evidence of unreported purchase transactions is discovered. In the PT SBS dispute, the Defendant applied Article 13, paragraph (1) of the KUP Law and MoF Regulation No. 15/PMK.03/2018 to recalculate business turnover based on third-party data indicating intentionally concealed Input Tax.

Core Conflict: Physical Evidence vs. Macro-Analysis

The core of the conflict centered on the validity of using macro-analysis by tax auditors to determine material tax liability. The Plaintiff argued that revenue corrections should be based on physical evidence of actual goods delivery rather than mathematical assumptions of profit margins. However, the Defendant successfully proved through confirmations with 18 counterparties that the purchase transactions indeed occurred, and accounts receivable testing showed turnover balances significantly higher than those reported in the tax returns.

Legal Consideration and Board of Judges Decision

In its legal considerations, the Board of Judges emphasized that the tax authority's use of the gross-up technique with an internal margin of 8.9% was a legitimate action with a strong legal basis. The Judges concluded that the Plaintiff failed to present credible counter-evidence to refute the findings of the accounts receivable test. Consequently, the Board of Judges rejected the Plaintiff's entire lawsuit because the VAT Base determination was deemed to meet the principles of legal certainty and material truth.

Implications and the Big Data Era

This decision has serious implications for PT SBS, which must settle all tax underpayments and penalties. For general tax practice, this case serves as an important precedent that data integration (Big Data) between sellers and buyers makes it easier for tax authorities to detect understated turnover. Taxpayers are reminded that irregularities in reporting Input Tax will automatically serve as an indicator of unreported Output Tax.

Conclusion on Compliance and Indirect Methods

In conclusion, compliance in reporting all transactions—both purchases and sales—is key to avoiding significant fiscal corrections. This ruling reaffirms that indirect calculation methods are valid tools for tax authorities as long as they are supported by competent evidence from third-party confirmations and cash or goods flow testing.