Title
Supreme Court
Diaz vs. Secretary of Fice
Case
G.R. No. 193007
Decision Date
Jul 19, 2011
Petitioners challenged VAT imposition on toll fees, arguing it was a "user's tax" and unconstitutional. Court ruled tollway operators are franchise grantees; VAT is valid under NIRC, not impairing contracts. Petition denied.

Case Summary (G.R. No. 193007)

Issues Presented

Procedural

  1. May a declaratory relief petition be treated as one for prohibition?
  2. Do petitioners have standing?
    Substantive
  3. Does Section 108 unlawfully extend VAT to tollway operations?
  4. Does VAT on toll fees
    a. constitute a tax on tax?
    b. impair contractual returns under TOAs?
    c. lack administrative feasibility?

Court’s Rulings on Procedural Issues

  1. The petition was properly converted into a prohibition action due to its far-reaching impact on motorists and government revenue; technical non-compliance with Rule 65 and locus standi requirements was waived in the public interest.
  2. Petitioners possess sufficient interest to challenge an executive act affecting a broad class of taxpayers and users.

Interpretation of VAT Coverage

Section 108(A) VAT base includes “gross receipts from sale or exchange of services,” defined expansively to cover all service types and franchise grantees except those under Section 119. Tollway operators render services (use of expressway facilities for a fee) under P.D. 1112 and hold franchises evidenced by Toll Operation Certificates. The Court applied the plain-meaning rule: enumeration in Section 108 is illustrative, not exhaustive. No statutory exclusion for public or user-fee services exists; exemptions require explicit legislative grant.

Nature of Toll Fees vs Taxes

Toll fees are private reimbursements under a build-operate-transfer scheme, not sovereign exactions. They fund operator expenses and returns, not general government coffers. As an indirect tax, VAT liability rests on the operator, who may shift its burden to users; shifting does not transform VAT into a “tax on tax.” Output VAT is assessed on the operator’s gross receipts, and any pass-through simply increases the toll rate.

Non-Impairment of Contracts Claim

Petitioner Timbol cannot assert impairment of private investors’ TOAs. She lacks proprietary interest; alleged rate-of-return diminution is speculative. Activation of Material Adverse Grantor Action clauses is conjectural and insufficient to enjoin sovereign taxing power.

Administrative Feasibility

While VAT implementation may burden operators (e.g., invoicing, rounding procedures, input VAT credits), administrative inconvenience alone does n

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