Title
Tan vs. Del Rosario, Jr.
Case
G.R. No. 109289
Decision Date
Oct 3, 1994
A taxpayer and law firm challenged RA 7496's constitutionality and its implementing regulation, alleging violations of uniformity, equity, due process, and single-subject rule. The Court upheld the law and regulation, ruling they comply with constitutional requirements and do not exceed rule-making authority.

Case Summary (G.R. No. 109289)

Key Dates

– RA 7496 enacted in 1992
– RR No. 2-93 issued shortly thereafter
– Supreme Court decision rendered October 3, 1994

Applicable Law

– 1987 Philippine Constitution (single-subject rule, uniformity and equity in taxation, due process and equal protection)
– National Internal Revenue Code, as amended by RA 7496 (amending Sections 21(f) and 29)
– Revenue Regulations No. 2-93, Section 6

Petitions and Issues Presented

In G.R. No. 109289, petitioners asserted that RA 7496 violates:
• Article VI, Section 26(1) (single-subject requirement);
• Article VI, Section 28(1) (uniform and equitable taxation with progressive system);
• Article III, Section 1 (due process and equal protection).
In G.R. No. 109446, petitioners maintained that Section 6 of RR 2-93 exceeds the respondents’ rule-making authority by subjecting partners in GPPs to SNIT.

Adequacy of the Legislative Title and Net-Income Character

The Court held that the full title of RA 7496 reflects a single, clearly expressed subject and adequately notifies legislators and the public. Although deductions were limited compared to the pre-amendment Code, the SNIT remains a net-income tax: significant deductions (direct costs or a 40% flat allowance) continue to ensure that taxpayers are taxed on net, not gross, receipts.

Classification, Uniformity and Due Process

The distinction between individuals taxed under SNIT and corporations or ordinary partnerships under the global system does not violate uniformity or equal protection. Classifications are permissible if based on substantial, germane standards applied equally to all similarly situated taxpayers and consistent over time. The legislature’s choice of a schedular approach for individual professionals and self-employed persons falls within its broad discretion; no confiscatory or arbitrary tax measure was shown that would offend due process.

Application to General Professional Partnerships

Under Section 23 of the Tax Code (unamended by RA 7496), a GPP is a flow

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