Tax Assessment Falsity of Returns and the Ten-Year Prescriptive Period

The general rule in Philippine tax law is that the Bureau of Internal Revenue (BIR) has only three years from the filing of a return to assess a taxpayer for deficiencies. But there is a critical exception: if a taxpayer files a false or fraudulent return, the prescriptive period extends to ten years from discovery. In Commissioner of Internal Revenue v. Asalus Corporation (G.R. No. 221590, February 22, 2017), the Supreme Court clarified when this longer period applies and what the BIR must show to invoke it.

The Facts of the Case

Asalus Corporation, a health maintenance organization, received a Notice of Informal Conference from the BIR in December 2010 regarding its value-added tax (VAT) transactions for taxable year 2007. After investigation, the BIR issued a Preliminary Assessment Notice (PAN) finding Asalus liable for deficiency VAT of over P413 million. Asalus protested, but the BIR denied the protest.

In August 2011, Asalus received a Formal Assessment Notice (FAN) reducing the deficiency to about P95 million. Asalus protested again, later adding a supplemental protest arguing that the assessment had prescribed under of the National Income Revenue Code (NIRC). The BIR eventually issued a Final Decision on Disputed Assessment (FDDA) in October 2012, still asserting a VAT deficiency.

Asalus brought the case to the Court of Tax Appeals (CTA), which ruled in its favor. Both the CTA Division and the CTA En Banc held that the assessment had prescribed because the BIR failed to prove that Asalus filed false returns. The CIR appealed to the Supreme Court.

The Legal Issue

The central question was whether the ten-year prescriptive period under (A) of the NIRC applied, which requires a showing of a false or fraudulent return. The CTA had ruled that the BIR did not sufficiently allege or prove falsity, noting that neither the FAN nor the FDDA explicitly mentioned the ten-year period or the basis for applying it.

The Supreme Court's Ruling

The Supreme Court reversed the CTA and remanded the case for determination of Asalus's actual VAT liability. The Court made several key points.

First, the Court distinguished between a false return and a fraudulent return. Citing Aznar v. CTA (157 Phil. 510), the Court explained that a false return merely deviates from the truth, whether intentional or not, while a fraudulent return involves intentional deceit to evade tax. A showing that the returns were false, even without intent to defraud, is sufficient to trigger the ten-year period.

Second, the Court applied the presumption of falsity under (B) of the NIRC. Under this provision, a substantial underdeclaration of taxable sales, receipts, or income—exceeding 30% of what was declared—constitutes prima facie evidence of a false or fraudulent return. In this case, the audit revealed undeclared VAT-able sales exceeding 30% of what Asalus declared. Moreover, Asalus's own witness testified that not all membership fees were reported in its VAT returns. This testimony supported the presumption, and Asalus failed to overcome it.

Third, the Court addressed the notice requirement. While neither the FAN nor the FDDA explicitly stated that the ten-year period applied, both documents referred to the PAN, which categorically stated that the three-year period under did not apply and that the ten-year period under (A) governed. Citing Samar-I Electric Cooperative v. COMELEC (G.R. No. 193100, December 10, 2014), the Court held that substantial compliance with the notice requirement under of the NIRC suffices. What matters is that the taxpayer was sufficiently informed of the factual and legal bases of the assessment to file an effective protest. Asalus was so informed.

A Note on Professional Conduct

The Court also took the opportunity to remind counsel that while lawyers should champion their clients' causes zealously, they must maintain civility and decorum. Citing Rule 8.01 of the Code of Professional Responsibility and Noble v. Atty. Ailes (A.C. No. 10628, July 1, 2015), the Court cautioned against using abusive or offensive language in pleadings, noting that such conduct may subject a lawyer to disciplinary action.

Practical Takeaways

• The three-year prescriptive period under of the NIRC is the general rule, but the ten-year period under (A) applies when a taxpayer files a false or fraudulent return or fails to file a return.
• A "false" return need not involve intent to defraud; mere deviation from the truth is enough to trigger the longer period.
• A substantial underdeclaration of sales, receipts, or income exceeding 30% of what was declared creates a presumption of falsity under (B) of the NIRC. The taxpayer bears the burden of rebutting this presumption.
• The BIR need not explicitly state in the FAN or FDDA that the ten-year period applies, as long as the taxpayer was substantially informed of the legal and factual bases of the assessment, such as through a reference to the PAN.
• Taxpayers facing assessments should carefully review all BIR communications, including the PAN, to understand which prescriptive period the BIR intends to apply.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.