Mandanas v. Ochoa

Summary

This landmark Supreme Court En Banc decision addressed the constitutional scope of Local Government Units' entitlement to national tax revenues. Petitioners challenged the National Government's practice of computing LGU shares based only on 'national internal revenue taxes' rather than all 'national taxes' as mandated by the Constitution. The Court declared unconstitutional the phrase 'internal revenue' in Section 284 of the Local Government Code, ruling that Congress impermissibly narrowed the constitutional base for LGU tax sharing. The decision significantly expanded LGU fiscal autonomy by requiring inclusion of customs duties, VATs collected by BOC, and other national taxes in the computation base. However, applying the doctrine of operative fact, the Court made the ruling prospective only, denying claims for past arrears totaling hundreds of billions. The decision reinforces constitutional supremacy in local government fiscal relations and mandates automatic release of LGU shares without legislative appropriation, fundamentally reshaping intergovernmental fiscal arrangements in the Philippines.