Tax Authority Defeated! Turnover Extrapolation Without Concrete Evidence Overturned by Tax Court

Legal Dispute Analysis: Limits of the Extrapolation Method in Tax Audits

This dispute focuses on the legality of the Value Added Tax (VAT) base correction through extrapolation methods applied by the Respondent against PT EI for the October 2015 tax period. Pursuant to Article 29 of the KUP Law, tax audits must be based on objective and relevant evidence; however, the Respondent determined a correction worth IDR 6.02 billion based solely on mathematical assumptions.

The Conflict: Mathematical Projection vs. Actual Delivery

The conflict began when tax auditors discovered internal documents interpreted as indicators of unreported sales and applied a projection technique:

• Respondent's Position: Employed an extrapolation technique to determine the amount of turnover deemed underpaid across tax periods based on internal draft findings.
• Petitioner's Defense: Refuted the method, stating the documents were merely drafts that resulted in no actual delivery or cash flow. They presented general ledgers, bank statements, and tax invoices as concrete counter-evidence.

Judicial Review: Rejection of Arbitrary Assessments

The Board of Judges provided a strict boundary, stating that the authority to calculate taxes due must not be arbitrary:

1. Lack of Physical Proof: The Judges ruled that the Respondent was unable to demonstrate physical flows of goods or money that supported the extrapolation results.
2. Incapable of Proof: The Board concluded that the correction lacked a strong evidentiary basis. Extrapolation without economic reality is legally insufficient to support a tax assessment.
3. Verdict: The Board decided to fully grant PT EI's appeal and annulled the correction.

Implications: The Burden of Proof

This decision carries significant implications for tax litigation and audit defense strategies:

• Substance Over Formulas: It reaffirms that indirect methods are only acceptable if tax authorities can prove the underlying economic reality.
• Taxpayer Defense: Organized internal documentation and data reconciliation remain the primary defenses against presumptive or mathematical corrections.

Conclusion: PT EI's victory underscores that "mathematical assumptions" cannot override the requirement for material evidence. Without a proven flow of goods or cash, an extrapolation formula is legally invalid for determining underpaid tax.