The BIR erroneously included [amount] as taxable income, but this represents [e.g., loan proceeds / return of capital / nontaxable compensation].

: [E.g., The BIR assessed VAT on transactions that are zero-rated under the law.]

In the Philippines, the Bureau of Internal Revenue (BIR) has the power to assess taxes and demand payment for deficiencies. When a taxpayer receives a Formal Letter of Demand (FLD) and Final Assessment Notice (FAN) disputing a tax liability, the taxpayer has a statutory right to file a protest. A well-crafted protest letter is the first and most critical step in protecting the taxpayer’s rights. This report provides a detailed guide on the legal basis, timelines, required contents, and a sample protest letter for a tax assessment in the Philippines.