G.R. No. 168056, 168207, 168461, 168463, 168730. September 1, 2005.
ABAKADA GURO PARTY LIST, et al., Petitioners, vs. THE HONORABLE EXECUTIVE SECRETARY EDUARDO ERMITA, et al., Respondents.

FACTS

Multiple petitions were consolidated challenging the constitutionality of Republic Act No. 9337, the law expanding the coverage of the Value-Added Tax (VAT). Petitioners, including party-list organizations, senators, congressmen, and various business associations, raised several procedural and substantive grounds against the law. They argued, inter alia, that its passage violated the constitutional rule on the “exclusive origination” of revenue bills by the House of Representatives, contending that the Senate improperly introduced substantial amendments. They also assailed the law for allegedly constituting an undue delegation of legislative power to the Executive Branch, as it provided for a stand-by authority to raise the VAT rate based on certain macroeconomic triggers.
Further substantive challenges claimed the law was oppressive, confiscatory, and violated due process and equal protection clauses. Petitioners argued it would lead to cascading taxes, increase the cost of basic goods and services, and disproportionately burden consumers and specific industries like the downstream oil sector. The government, through the Solicitor General, defended the law as a necessary fiscal measure to address budget deficits, fund essential social services, and promote economic stability, asserting its compliance with all constitutional requirements.

ISSUE

The primary issues were: (1) Whether RA 9337 was passed in violation of Article VI, Section 24 of the Constitution regarding the origination of revenue bills; (2) Whether the law constituted an invalid delegation of legislative power to the President; and (3) Whether the law violated the due process and equal protection clauses.

RULING

The Supreme Court upheld the constitutionality of RA 9337. On the origination issue, the Court ruled that while revenue bills must originate exclusively in the House, the Constitution does not prohibit the Senate from introducing amendments. The Senate’s power to propose or concur with amendments is co-extensive with that of the House. The Senate Bill 1950, which originated as a House bill, was validly amended by the Senate. The resulting bicameral conference committee report and the final law remained within the scope of the original House bill’s subject—tax reform.
Regarding delegation, the Court found the provision for a conditional VAT rate increase did not constitute undue delegation. The law laid down a specific standard: the President, upon recommendation of the Secretary of Finance, may raise the VAT rate if a certain threshold of VAT collection efficiency and a specified national government deficit-to-GDP ratio are met. These are sufficient standards that limit the Executive’s discretion, making the delegation permissible. The Court also rejected the due process and equal protection challenges, emphasizing that the law enjoys a strong presumption of constitutionality. The Court reiterated that it does not inquire into the wisdom of a law but only its conformity with the Constitution. The economic policy choices behind the VAT expansion are within the exclusive realm of the legislative branch.