Commissioner of Internal Revenue vs. Gonzalez

A final and executory tax assessment can no longer be contested collaterally in a criminal proceeding for tax evasion, and the taxpayer's availment of tax amnesty programs does not bar prosecution when there is substantial underdeclaration of income exceeding 30%, which constitutes prima facie evidence of fraud.

Acting on information from an informer, the Bureau of Internal Revenue (BIR) conducted a tax fraud investigation on L. M. Camus Engineering Corporation (LMCEC) for taxable years 1997 to 1999. The investigation revealed substantial underdeclarations of taxable income, prompting the BIR to issue a Preliminary Assessment Notice (PAN) and, subsequently, a Formal Letter of Demand and Assessment Notice. LMCEC refused to receive the formal assessment, necessitating constructive service. LMCEC had previously availed of the BIR's ERAP and VAP programs and claimed immunity from audit based on a Letter of Termination for 1997.

• Tax Fraud Investigation: Based on Confidential Information No. 29-2000, the BIR's Tax Fraud Division conducted an investigation on LMCEC for taxable years 1997-1999. The investigation, utilizing third-party information under Section 5 of the NIRC due to LMCEC's refusal to submit its books, revealed underdeclarations of income amounting to 193.30% (1997), 172.90% (1998), and 184.90% (1999).
• Assessment Proceedings: A PAN was issued and received by LMCEC on February 22, 2001. LMCEC's protest to the PAN was denied for being filed beyond the 15-day reglementary period. On August 7, 2002, a Formal Letter of Demand and Assessment Notice detailing the law and facts of the deficiency taxes was issued and constructively served on October 1, 2002, after LMCEC refused personal service.
• Criminal Complaints: When LMCEC officers failed to comply with a subpoena duces tecum, the BIR filed a criminal complaint for violation of Section 266 (Failure to Obey Summons). Subsequently, the BIR filed the present complaint for violation of Sections 254 and 255 (Attempt to Evade or Defeat Tax and Willful Failure to Pay Tax) with the DOJ.
• Taxpayer's Defense of Immunity: LMCEC claimed it could not be prosecuted because its 1997 taxes were terminated, it availed of ERAP for 1998, and VAP for 1999, arguing that these programs granted immunity from audit and negated the element of fraud.

• Finality of Assessment: Petitioner argued that the assessment became final, executory, and demandable because LMCEC failed to file a protest within the 30-day reglementary period under Section 228 of the NIRC; the Secretary of Justice had no authority to collaterally inquire into its validity.
• Irrelevance of Control Numbers: Petitioner maintained that the absence of a control number in the assessment notice is not an element of the offense charged and does not invalidate the assessment, as the formal letter of demand complied with Section 228 by stating the law and facts.
• No Immunity from Prosecution: Petitioner argued that ERAP and VAP did not grant absolute immunity from audit and investigation for fraud, especially since LMCEC was already issued a PAN and was under investigation based on verified information from a tax informer.
• Estoppel Does Not Lie: Petitioner contended that the State cannot be estopped by the errors of its administrative officers, particularly in matters involving taxation.

• Invalid Assessment: Respondent countered that the assessment notices were invalid for lacking control numbers, rendering the amounts suspect and irregular.
• Settlement and Immunity: Respondent argued that the tax liabilities were already settled or terminated via the Letter of Termination (1997), ERAP (1998), and VAP (1999), which operate as tax amnesties that estop the BIR from further action.
• Lack of Prior Fraud Determination: Respondent maintained that there was no prior determination of fraud as required by Section 235 of the NIRC, making the subsequent Letter of Authority defective and the investigation a "fishing expedition."
• Forum Shopping: Respondent argued that the BIR committed forum shopping by filing the present criminal complaint while the earlier case for failure to obey summons was pending appeal.

• Validity of Assessment: Whether the Secretary of Justice gravely abused discretion in ruling that the assessment notices were invalid and the tax deficiencies settled despite the assessment having become final and executory.
• Tax Amnesty/Immunity: Whether LMCEC's availment of the ERAP and VAP programs grants immunity from criminal prosecution for tax evasion.
• Prior Determination of Fraud: Whether there was a valid prior determination of fraud to justify the tax fraud investigation under Section 235 of the NIRC.
• Forum Shopping: Whether the filing of the criminal complaint for tax evasion constituted forum shopping given the pending appeal in the case for failure to obey summons.

• Validity of Assessment: The Secretary of Justice committed grave abuse of discretion in ruling the assessment invalid. Because LMCEC failed to protest the formal assessment within 30 days, the assessment became final, executory, and demandable. The absence of a control number does not invalidate an assessment; the mandatory requirement is that the formal letter of demand state the law and facts on which the assessment is based, which was complied with. Objections to the assessment should have been raised administratively or with the Court of Tax Appeals, not collaterally during a preliminary investigation.
• Tax Amnesty/Immunity: Availment of ERAP and VAP did not grant LMCEC immunity from prosecution. ERAP excluded withholding taxes and did not preclude collection from fraud investigations. VAP explicitly excluded taxpayers already issued a PAN or under investigation for fraud. Moreover, under Section 2 of RR No. 8-2001, a taxpayer who availed of VAP could still be audited upon the Commissioner's authorization when there is strong evidence of understatement exceeding 30%. Estoppel does not lie against the State in taxation matters.
• Prior Determination of Fraud: Prior determination of fraud was validly established. The informer's tip triggered a preliminary investigation under RMO No. 15-95, which established prima facie fraud, leading to the issuance of the Letter of Authority for a formal fraud investigation. The substantial underdeclarations exceeding 30% constituted prima facie evidence of a fraudulent return under Section 248(B) of the NIRC, justifying the exception to the once-a-year audit rule under Section 235.
• Forum Shopping: No forum shopping existed. The crime of tax evasion under Sections 254 and 255 is distinct from the crime of failure to obey a summons under Section 266. The outcome of the latter case is not determinative of probable cause in the former.

• Finality of Tax Assessment — Failure to file a protest against a tax assessment within the reglementary period renders the assessment final, executory, and demandable, precluding the taxpayer from interposing defenses of legality or validity in a collateral proceeding.
• Estoppel Against the State — The State can never be in estoppel, particularly in matters involving taxation; errors of administrative officers cannot jeopardize the government's financial position.
• Substantial Underdeclaration as Prima Facie Fraud — Under Section 248(B) of the NIRC, failure to report sales, receipts, or income in an amount exceeding 30% of that declared per return constitutes prima facie evidence of a false or fraudulent return.

• "The formal letter of demand calling for payment of the taxpayer’s deficiency tax or taxes shall state the fact, the law, rules and regulations or jurisprudence on which the assessment is based, otherwise the formal letter of demand and the notice of assessment shall be void."
• "It is axiomatic that the State can never be in estoppel, and this is particularly true in matters involving taxation. The errors of certain administrative officers should never be allowed to jeopardize the government’s financial position."
• "[T]he crime is complete when the [taxpayer] has x x x knowingly and willfully filed [a] fraudulent [return] with intent to evade and defeat x x x the tax."

• Ungab v. Cusi, Jr., 97 SCRA 877 (1980) — Followed. The Court cited this case to establish that the crime of tax evasion is complete upon the willful filing of a fraudulent return, regardless of compliance with a subpoena.
• Marcos II v. Court of Appeals, 273 SCRA 47 (1997) — Followed. The Court relied on this case to hold that tax assessments are presumed correct and made in good faith, and objections to assessments must be raised administratively with the BIR or judicially with the CTA, not via certiorari.
• Commissioner of Internal Revenue v. Procter & Gamble PMC, 160 SCRA 560 (1988) — Followed. Cited for the doctrine that the State cannot be estopped by the errors of its administrative officers in tax collection matters.

• Section 228, National Internal Revenue Code of 1997 (NIRC) — Requires that the taxpayer be informed in writing of the law and facts on which the assessment is made; otherwise, the assessment is void. It also provides the 30-day period to protest an assessment.
• Section 235, NIRC — Provides the general rule that examination and inspection of books of accounts shall be made only once in a taxable year, with exceptions for fraud, irregularity, or mistakes as determined by the Commissioner.
• Section 248(B), NIRC — Establishes that a substantial underdeclaration of income exceeding 30% constitutes prima facie evidence of a false or fraudulent return.
• Sections 254 and 255, NIRC — Define and penalize the crimes of attempt to evade or defeat tax and willful failure to supply correct and accurate information and pay tax, respectively.
• Section 5, NIRC — Authorizes the Commissioner to obtain information from third parties to ascertain the correctness of a return or determine tax liability.
• Revenue Regulations No. 2-99 (ERAP) — Granted immunity from audit and investigation of income tax and VAT returns for 1998, but expressly excluded withholding tax returns and did not preclude collection from fraud investigations.
• Revenue Regulations No. 8-2001 and 10-2001 (VAP) — Provided last priority in audit for taxpayers who availed, except those issued a PAN or under investigation for fraud, and allowed audit upon authorization if underdeclaration exceeded 30%.

Conchita Carpio Morales (Chairperson), Arturo D. Brion, Lucas P. Bersamin, Maria Lourdes P. A. Sereno.