Tax Evasion Cases: When a Prior Assessment Is Not Required for Prosecution

The Supreme Court has long held that tax evasion is a criminal offense that can be prosecuted even without a prior deficiency assessment from the Bureau of Internal Revenue (BIR). In Bureau of Internal Revenue v. Court of Appeals (G.R. No. 197590, November 24, 2014), the Court reiterated this rule and clarified what the government must show to establish probable cause for a tax evasion case.

The case involved spouses Antonio Villan Manly and Ruby Ong Manly, who were accused of underdeclaring their income for taxable years 2000, 2001, and 2003. The BIR alleged that despite Antonio's modest declared annual income of roughly P150,000, the couple purchased properties in cash—including a P17.5 million vacation house in Tagaytay and two Toyota vehicles worth over P3 million combined.

The Dispute Over Probable Cause

The BIR's revenue officers used the "expenditure method" to reconstruct the spouses' income. This method deducts a taxpayer's yearly expenditures from their declared income; when spending exceeds reported income and the source of funds is unexplained, the excess is presumed to be unreported income.

The BIR's computation showed underdeclarations of P15.8 million in 2000, P632,000 in 2001, and P1.14 million in 2003. Under the National Internal Revenue Code, a substantial underdeclaration of income—generally understood as an underdeclaration exceeding 30% of declared income—constitutes prima facie evidence of a false or fraudulent return.

The State Prosecutor found probable cause and recommended filing charges under Sections 254 and 255 of the National Internal Revenue Code, which penalize willful attempts to evade or defeat tax and willful failure to supply correct and accurate information. However, the Secretary of Justice reversed this finding, and the Court of Appeals (CA) affirmed the dismissal.

The Supreme Court's Ruling

The Supreme Court reversed the CA, holding that it committed grave abuse of discretion in affirming the dismissal despite clear evidence of probable cause.

The Court clarified two key points. First, while a prior assessment is generally not required for criminal prosecution, the government must still prove that a tax is due. Second, the BIR had sufficiently alleged the exact tax due in its complaint-affidavit, complete with computations and the method used.

The Court also found that the BIR had identified the likely source of the undeclared income—Antonio's rental business—based on his refusal to allow revenue officers to inspect his rental property. The spouses' claim that they used accumulated savings remained self-serving, as they presented no evidence to support it.

The Standard for Probable Cause

The Court emphasized that probable cause for filing criminal charges requires only "such facts as are sufficient to engender a well-founded belief that a crime has been committed and that the accused is probably guilty." It does not require actual certainty or clear and convincing evidence of guilt.

The Court stressed that its ruling was limited to determining probable cause—whether the spouses were actually guilty of tax evasion remained for trial, where proof beyond reasonable doubt is required.

Practical Takeaways

• A prior BIR assessment is not a prerequisite for criminal prosecution for tax evasion. The crime is complete when a taxpayer knowingly files a fraudulent return with intent to evade tax.
• The government must still prove a tax is due, but it can use methods like the expenditure method to reconstruct income when records are inadequate.
• Substantial underdeclaration of income creates prima facie evidence of fraud under the National Internal Revenue Code.
• Probable cause is a low threshold—it requires only a reasonable belief that a crime was committed, not proof beyond reasonable doubt.
• Taxpayers facing BIR investigations should document the sources of their funds, as unexplained expenditures can serve as evidence of undeclared income.

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