Answer
Under the second paragraph of Article 287 of the Revised Penal Code, unjust vexation is punished by arresto menor (imprisonment of one day to thirty days) or a fine, or both, in the court's discretion.
Because it is a light offense, the penalty is relatively minor, and the precise fine has been affected by later adjustments to penalties in the Revised Penal Code. The exact penalty in a given case should be confirmed against the current text and with counsel.
Researching Philippine law? Intellegal brings Philippine case-law search, statute and issuance exploration, multi-dimension case comparison, document visualization, and cited deep-research reports into a single workflow — with every citation traced back to its original source, so you can verify each answer rather than take it on trust. Every authority it surfaces links back to its original provision or decision, so you can open the source and confirm the wording yourself, and save or export the questions and reports you reference most. See the full report for the statutes and cases behind this answer, or explore the related questions below.