Title
Tinio vs. Duterte
Case
G.R. No. 236118
Decision Date
Jan 24, 2023
The case challenged the constitutionality of the TRAIN Act, focusing on its passage, excise taxes, and alleged violations of due process and progressive taxation. The Court upheld the law, ruling it validly passed and constitutional.

Case Digest (G.R. No. 236118)
Expanded Legal Reasoning Model

Facts:

  • Parties and Petitions
    • G.R. No. 236118 (“Tinio, et al.”)
      • Petitioners: Representatives Tinio, Zarate, and Casilao.
      • Relief sought: Certiorari and prohibition to annul RA 10963 (“TRAIN Act”) for lack of quorum and internal-rules violations in the House.
    • G.R. No. 236295 (“Laban Konsyumer and Dimagiba”)
      • Petitioners: Laban Konsyumer, Inc. and Atty. Dimagiba.
      • Relief sought: Certiorari to strike excise taxes on diesel, coal, LPG, and kerosene as unconstitutional (regressive, confiscatory, discriminatory).
  • Background of TRAIN Act
    • RA 10963 (“Tax Reform for Acceleration and Inclusion Act”) amended the National Internal Revenue Code to fund “Build, Build, Build.”
    • Initial bills (HB 5636, SB 1592) certified urgent; bicameral conference report ratified 13 Dec 2017.
    • TRAIN Act enacted 19 Dec 2017; implemented reforms, including new/existing excise taxes and higher income-tax exemption thresholds.
  • Procedural History
    • Two petitions consolidated by Supreme Court resolution, 23 Jan 2018.
    • Respondents’ consolidated comment: challenge dismissed for procedural defects and lack of merit.
    • Petitioner replies and motions for injunctive relief (TRO, status quo ante, preliminary injunction).
    • Court identification of eight issues for resolution, including jurisdiction, hierarchy, quorum, substantive constitutionality.

Issues:

  • May the Supreme Court take cognizance under its judicial power and certiorari jurisdiction?
  • Did petitioners violate the doctrine of hierarchy of courts?
  • Must Congress (both Houses) be impleaded as indispensable parties?
  • Does presidential immunity from suit bar Tinio, et al.’s challenge to President Duterte?
  • Was the TRAIN Act validly enacted into law?
  • Is Section 48 (coal excise tax) of TRAIN a prohibited rider under Art. VI, Sec. 24 of the Constitution?
  • Do the excise‐tax provisions violate due process (confiscatory, arbitrary exaction)?
  • Do the excise‐tax provisions violate equal protection and Art. VI, Sec. 28(1) (progressivity requirement)?

Ruling:

  • (Subscriber-Only)

Ratio:

  • (Subscriber-Only)

Doctrine:

  • (Subscriber-Only)

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