Tan vs. Del Rosario, Jr.

Republic Act No. 7496, which adopts a simplified net income taxation scheme for self-employed individuals and professionals, is constitutional. Its title sufficiently expresses its single subject, its classification of taxpayers is germane to the legislative purpose of a schedular system for individuals, and it does not constitute an invalid deprivation of property. An implementing regulation applying the scheme to partners in general professional partnerships is valid because such partners are taxed as individuals on their distributive shares, and the law makes no distinction between professionals practicing alone and those in a general professional partnership.

Petitioners, taxpayers affected by Republic Act No. 7496 (SNIT), filed separate petitions for prohibition. In G.R. No. 109289, petitioner Rufino R. Tan challenged the constitutionality of the law itself, alleging violations of the constitutional one-subject rule, the requirements of uniform and equitable taxation, and the due process clause. In G.R. No. 109446, a group of lawyers challenged the validity of Section 6, Revenue Regulations No. 2-93, promulgated by the Secretary of Finance and Commissioner of Internal Revenue to implement R.A. No. 7496, arguing that the regulation exceeded statutory authority by applying SNIT to general professional partnerships.

• Nature of the Actions: Two consolidated petitions for prohibition were filed. The first (G.R. No. 109289) directly challenged the constitutionality of Republic Act No. 7496 (SNIT). The second (G.R. No. 109446) challenged the validity of Section 6 of its implementing regulation, Revenue Regulations No. 2-93.
• The Assailed Law: R.A. No. 7496 amended Sections 21 and 29 of the National Internal Revenue Code. It imposed a simplified net income tax on self-employed individuals and professionals, using a schedular system with specified rates and limiting allowable deductions to certain "direct costs."
• Petitioner's Claim (G.R. No. 109289): The law's title, "An Act Adopting the Simplified Net Income Taxation Scheme For The Self-Employed and Professionals Engaged In The Practice Of Their Profession, Amending Sections 21 and 29 of the National Internal Revenue Code, as Amended," was allegedly deficient. The law was also claimed to violate uniformity in taxation by treating single proprietorships/professionals differently from corporations/partnerships, and to violate due process by creating an imbalance in tax liabilities.
• Petitioner's Claim (G.R. No. 109446): The implementing regulation (Sec. 6, R.R. No. 2-93) applied SNIT to general professional partnerships (GPPs). Petitioners argued this exceeded the respondents' rule-making authority because congressional deliberations showed the law was intended to apply only to individuals, not to partnerships.
• Respondents' Defense: The Solicitor General defended the law and the regulation. On the regulation, it was argued that SNIT applies to all individual income taxpayers, and partners in a GPP are taxed individually on their distributive shares.

• One-Subject Rule (G.R. No. 109289): Petitioner argued the title of R.A. No. 7496 was a misnomer or deficient because the law, in effect, adopted a gross income taxation scheme, which was not expressed in the title.
• Uniformity and Due Process (G.R. No. 109289): Petitioner contended the law violated the constitutional mandate that taxation be uniform and equitable by taxing single proprietorships and professionals differently from corporations and partnerships, creating an unconstitutional imbalance.
• Ultra Vires Regulation (G.R. No. 109446): Petitioners maintained that congressional deliberations explicitly stated SNIT applied only to individuals, not to corporations or partnerships. Therefore, Section 6 of R.R. No. 2-93, by applying SNIT to GPPs, exceeded the statutory authority granted by R.A. No. 7496.

• Constitutionality of the Law: The Solicitor General defended the law, arguing its title complied with the one-subject rule, its classification was valid for uniformity purposes, and it did not violate due process as the legislature has broad discretion in taxation.
• Validity of the Regulation: Respondents argued that the regulation merely confirmed the existing tax treatment under the National Internal Revenue Code. A general professional partnership is not a taxable entity; its partners are taxed as individuals on their distributive shares. Thus, applying SNIT to those individuals was consistent with the law.

• One-Subject Rule: Whether the title of Republic Act No. 7496 violates the constitutional requirement that a bill shall embrace only one subject which shall be expressed in its title.
• Uniformity in Taxation: Whether R.A. No. 7496 violates the constitutional rule that taxation shall be uniform and equitable by creating a different tax scheme for self-employed individuals/professionals.
• Due Process: Whether the law constitutes an invalid deprivation of property without due process.
• Statutory Construction & Delegation: Whether public respondents exceeded their rule-making authority by promulgating Section 6 of Revenue Regulations No. 2-93, which applies SNIT to partners in general professional partnerships.

• One-Subject Rule: The title was sufficient. The constitutional requirement is not for a complete compendium but to prevent log-rolling legislation, surprises, and to fairly apprise the public. The title, which mentions the scheme and the specific Code sections being amended, met these objectives.
• Uniformity in Taxation: No violation was found. Uniformity requires that all subjects similarly situated are treated alike but does not forbid classification. The classification of individuals (schedular system) versus corporations (global system) is substantial, germane to the legislative purpose, and has long been a feature of the tax system. The legislature has broad discretion in determining the nature, coverage, and rates of taxation.
• Due Process: The plea failed. The due process clause is invoked only for a clear contravention of constitutional limitations in the tax power. No such transgression was evident, and the law was not shown to be so unconscionable as to amount to confiscation.
• Statutory Construction & Delegation: The regulation was valid. A general professional partnership (GPP) is not itself an income taxpayer; it is a "flow-through entity." The partners are taxed individually on their distributive shares under Section 23 of the Tax Code. R.A. No. 7496, as an amendatory law, must be read as part of the entire Tax Code. Since SNIT applies to all individuals with non-compensation income, it applies to partners in a GPP. The regulation did not alter but confirmed this standing rule as modified by R.A. No. 7496.

• One-Subject Rule (Art. VI, Sec. 26(1)) — The rule is designed to prevent log-rolling, surprises, and fraud upon the legislature, and to fairly apprise the public. It does not require the title to be a full index or compendium of the law's content. A title expressing the general subject and the specific provisions being amended is sufficient.
• Uniformity in Taxation (Art. VI, Sec. 28(1)) — Uniformity requires that all subjects or objects of taxation similarly situated are treated alike. It does not prohibit classification. A classification is valid if: (1) it rests on substantial distinctions; (2) it is germane to the legislative purpose; (3) it applies equally to all members of the same class; and (4) it applies to both present and future conditions.
• Taxation of General Professional Partnerships — A general professional partnership is not a taxable entity for income tax purposes. It is a mere flow-through mechanism. The partners themselves are liable for income tax in their individual capacity on their distributive shares of the partnership's net income, regardless of whether such shares are distributed.

• "Uniformity of taxation, like the kindred concept of equal protection, merely requires that all subjects or objects of taxation, similarly situated, are to be treated alike both in privileges and liabilities."
• "The due process clause may correctly be invoked only when there is a clear contravention of inherent or constitutional limitations in the exercise of the tax power."
• "A general professional partnership, unlike an ordinary business partnership... is not itself an income taxpayer. The income tax is imposed not on the professional partnership, which is tax exempt, but on the partners themselves in their individual capacity computed on their distributive shares of partnership profits."
• "Under the Tax Code on income taxation, the general professional partnership is deemed to be no more than a mere mechanism or a flow-through entity in the generation of income by, and the ultimate distribution of such income to, respectively, each of the individual partners."

• Juan Luna Subdivision vs. Sarmiento, 91 Phil. 371 — Cited for the principle that uniformity in taxation requires that similarly situated subjects be treated alike.
• Pepsi Cola vs. City of Butuan, 24 SCRA 3 — Cited for the four-part test for a valid classification under the uniformity rule.
• Basco vs. PAGCOR, 197 SCRA 52 — Cited alongside Pepsi Cola for the test of valid classification.

• Article VI, Section 26(1), 1987 Constitution — The one-subject rule for bills. Applied to assess the sufficiency of the title of R.A. No. 7496.
• Article VI, Section 28(1), 1987 Constitution — The rule that taxation shall be uniform and equitable, and Congress shall evolve a progressive system. Applied to analyze the law's classification of taxpayers.
• Article III, Section 1, 1987 Constitution — The due process and equal protection clauses. Applied to reject the claim that the tax law was confiscatory or arbitrary.
• Sections 21(f) and 29, National Internal Revenue Code (as amended by R.A. No. 7496) — The substantive provisions imposing the simplified net income tax on self-employed individuals and professionals and defining allowable deductions.
• Section 23, National Internal Revenue Code — The provision stating that persons in a general professional partnership are liable for income tax only in their individual capacity on their distributive shares. This was central to the ruling on the validity of the regulation.

Chief Justice Andres R. Narvasa, Justices Florentino P. Feliciano, Teodoro R. Padilla (on leave), Abdulwahid A. Bidin (on leave), Flerida Ruth P. Romero, Jorge S. Imperial, Ricardo J. Francisco, Josue N. Bellosillo, Jose A. R. Melo, Santiago M. Kapunan, Vicente V. Mendoza, Carolina C. Griño-Aquino, and Arturo B. Buena. (Note: The decision lists concurring justices; Justices Padilla and Bidin were on leave.)

N/A — The decision reflects a unanimous Court with no noted dissents or separate opinions.