MANILA, Philippines — The Bureau of Internal Revenue (BIR) has officially launched a tax audit on Vice President Sara Duterte, her husband Manases “Mans” Carpio, and nine businesses linked to the couple. The move, confirmed on April 28, 2026, comes after weeks of political friction over the couple’s tax records.


BIR Commissioner Romeo Lumagui Jr. signed letters of authority (LOAs) to conduct the audits. The BIR said in a press release that it found probable cause to proceed. The agency’s goal: collect the correct taxes due to the government.


Why the BIR audit matters now

The audit follows a heated debate in the House justice committee. Lawmakers clashed over whether to open a sealed box containing the couple’s tax documents. Some argued it would violateRepublic Act 8424, the National Internal Revenue Code, which prohibits releasing confidential taxpayer information without consent.


The committee ultimately deferred the opening. But the BIR’s independent audit sidesteps that legal hurdle. The Vice President’s camp has yet to issue a formal statement on the development.


Who is being audited

Vice President Sara Duterte and Mans Carpio

The BIR did not specify the tax years under review. However, LOAs typically cover a three-year period. The audit will examine income, deductions, and tax payments. Both Duterte and Carpio are public figures. Duterte is the second highest official of the land. Carpio is a lawyer and businessman.


Nine companies linked to the couple

The BIR also ordered tax audits on nine businesses associated with the couple. The names of those companies have not been publicly released. The BIR cited possible discrepancies in tax filings. The agency stressed that audits are standard for high-net-worth individuals.


Legal framework and process

Letters of Authority explained

An LOA is a formal document authorizing a revenue officer to examine a taxpayer’s records. The BIR must first establish probable cause. This means there is enough evidence to suspect underreporting or non-compliance. The taxpayer is notified, and a field audit begins.


If discrepancies are found, the BIR issues a deficiency tax assessment. The taxpayer can appeal within 30 days. The case may reach the Court of Tax Appeals.


Confidentiality rules

UnderSection 270 of the National Internal Revenue Code, tax returns are confidential. The BIR cannot share details without the taxpayer’s written consent. That’s why the House committee backed down. But the BIR’s internal audit does not violate confidentiality. The agency is simply enforcing the law.


Political implications

The audit adds pressure on Vice President Duterte, who is rumored to be exploring a presidential run in 2028. Political rivals may weaponize the audit. But the BIR insists it is apolitical. “We treat all taxpayers equally,” Commissioner Lumagui said in a statement.


Still, the timing raises eyebrows. The audit comes just days after the House committee deadlocked. Critics say it looks like a compromise. Supporters see it as due process.


What this means for ordinary taxpayers

The BIR’s move signals stricter enforcement of tax laws. In 2025, the agency collected₱3.2 trillion, up 12% from 2024. High-profile audits serve as a deterrent. If you are a taxpayer, this is a reminder to keep your records accurate.


Failure to file or underpayment can lead to penalties of up to50% of the tax due. The BIR has ramped up digital tools, including theeBIRForms system, to make compliance easier.


Reactions from experts

Tax lawyerAtty. Maria Lourdes Santos told media that LOAs are routine. “The BIR can audit anyone. It doesn’t mean they are guilty. It means the BIR needs to verify,” she said. She advised the couple to cooperate fully.


EconomistDr. Benjamin Reyes of the University of the Philippines noted that transparency builds trust. “If our leaders submit to the same scrutiny, it strengthens the tax system,” he said.


What’s next

The BIR will assign revenue officers to examine records. The audit may take months. If no violations are found, the case is closed. If violations surface, the couple could face a tax deficiency notice. Worst case: criminal charges for tax evasion, which carries up to 10 years imprisonment.


The public should expect updates from the BIR. The agency vowed to keep the process “transparent within legal bounds.”


Conclusion

The BIR’s tax audit on Sara Duterte, Mans Carpio, and nine companies is a significant development. It tests the rule of law and the agency’s independence. For ordinary Filipinos, it reaffirms that no one is above tax obligations. Stay tuned as the story unfolds.


For more Philippine tax news, visitPinoyPulse Tax and Finance section. Learn about tax compliance atour About page. Read related stories:BIR launches new digital tax tools andTax evasion penalties in the Philippines.