Metro Manila, Philippines – The Bureau of Internal Revenue (BIR) has directed a tax audit on Vice President Sara Duterte, her spouse Mans Carpio, and nine business entities linked to them. In a press statement on Tuesday, April 28, the agency said it has ordered letters of authority to conduct a tax probe on the couple and their firms, after finding probable cause for an audit investigation. The move allows revenue officers to examine their books of accounts and accounting records. This comes as impeachment proceedings against the vice president are already underway over a number of allegations, including unexplained wealth. The BIR said it took note of the testimony of the ombudsman and the Anti-Money Laundering Council (AMLC) during the impeachment hearing on April 22. The AMLC earlier disclosed that Duterte and Carpio registered at least ₱6.77 billion in covered and suspicious bank transactions from 2006 to 2025, which…