G.R. No. 207140 - National Power Corp. vs. Provincial Government of Bulacan

Case Summary (G.R. No. 207140)

Factual Background

The petitioner, a government-owned and controlled corporation engaged in nationwide power generation and transmission, owned and operated the Angat Hydro-Electric Power Plant in Norzagaray, Bulacan. The Municipal Assessor issued two notices of real property tax assessment in December 2006: a Machineries Assessment covering January 1, 1996 to December 31, 2005, listing eleven items and asserting total tax due of PHP 113,960,000.00; and a Land Assessment covering January 1, 1997 to December 31, 2006, initially asserting total tax due of PHP 82,845,188.60, later revised by the assessor to a reduced land tax statement including PHP 18,475,003.20 for January 1, 1997 to December 31, 2006, and PHP 2,733,248.00 for 2006.

Administrative Contest and Local Board Proceedings

NPC protested the assessments before the Local Board of Assessment Appeals (LBAA), advancing two principal grounds: first, that the machineries and equipment listed were exempt under Section 234(c) of the LGC because they were actually, directly, and exclusively used in generation and transmission of electric power; and second, that the land assessment applied an incorrect assessment level of 40% instead of 10% for GOCCs under Section 218(d) of the LGC. The Municipal Assessor admitted the land assessment error and issued a revised notice applying the 10% assessment level, while insisting that the machineries were taxable and contending that NPC had not paid the taxes under protest as required by Section 252.

LBAA Disposition

On August 14, 2008, the LBAA denied NPC’s petition. The LBAA held that payment of the tax under protest was a jurisdictional condition precedent before appealing to the Board and concluded that NPC failed to prove that the machineries were actually, directly, and exclusively used for power generation. The LBAA described the assessed items as structures or multi-purpose components of the dam complex rather than the operational machines that generate electricity.

Central Board of Assessment Appeals Proceedings

NPC appealed to the Central Board of Assessment Appeals (CBAA). The CBAA conducted hearings, received evidence and testimony, and performed ocular inspections. On August 26, 2010, the CBAA dismissed NPC’s appeal and affirmed the LBAA’s factual findings. The CBAA reasoned that the dam and ancillary works were multi-purpose and served irrigation, flood control, and water supply in addition to power generation, thereby negating the exclusivity requirement for exemption. The CBAA noted that certain items, such as turbines and generators, had been excluded from assessment by the LBAA, while the contested items remained taxable.

CTA En Banc Proceedings and Ruling

NPC sought review before the Court of Tax Appeals En Banc. The CTA En Banc denied the petition on November 29, 2012 and affirmed the CBAA, concluding that NPC’s failure to pay the assessed tax under protest rendered its administrative protest ineffective and its appeal to the LBAA prematurely filed. The CTA relied on prior jurisprudence holding that claims of exemption ordinarily raise questions of fact as to the correctness of assessments and thus must comply with Section 252’s payment-under-protest requirement. The CTA also denied NPC’s motion for reconsideration on April 22, 2013.

Issues Presented to the Supreme Court

The Supreme Court distilled the issues to three questions: first, whether compliance with Section 252’s payment-under-protest rule is a condition sine qua non to question an assessor’s assessment before the LBAA; second, whether the properties listed in the Machineries Assessment are exempt from real property tax; and third, whether the properties listed in the Land Assessment are exempt.

Jurisdictional and Procedural Ruling on CTA’s Authority to Consider the Payment-Under-Protest Issue

The Supreme Court held that the CTA may adjudicate related issues not explicitly pleaded by the parties and that the payment-under-protest prerequisite was properly before the CTA. The Court explained that the CTA is empowered to rule on matters necessary for an orderly disposition and that the issue of payment under protest is ancillary to the question whether NPC’s appeal to the LBAA was prematurely filed. The Court further observed that the Municipal Assessor had raised the payment-under-protest issue during administrative proceedings, rendering NPC’s implied consent to try the issue.

Legal Standard Distinguishing Questions of Fact from Questions of Law

The Court reiterated settled law: when a dispute attacks the assessor’s authority to impose an assessment or the treasurer’s authority to collect taxes, the issue is predominantly legal and the taxpayer may seek direct judicial relief without exhausting administrative remedies; but when a taxpayer claims exemption, the claim ordinarily challenges the correctness or reasonableness of an assessment — a factual inquiry entrusted to the LBAA and CBAA — and thus Section 252’s payment-under-protest requirement applies. The Court surveyed prior decisions, distinguishing cases such as Ty v. Hon. Trampe and Olivarez v. Marquez where purely legal issues were presented, from cases where exemption claims required factual inquiries.

Decision on Non-Exhaustion and the CTA’s Premature Ruling

Applying these principles, the Court agreed with the CTA that NPC failed to pay the taxes under protest and thus its administrative protest under Section 226 was ineffective, rendering the appeal to the LBAA premature. However, the Court found the CTA’s subsequent affirmation of the assessments problematic because, although non-exhaustion renders the action premature and non-justiciable, the LBAA and CBAA had nonetheless conducted full factual inquiries and developed a record through hearings, inspections, and testimony. Because the administrative boards had already considered the merits and because further remand would be futile, the Court proceeded to decide the substantive exemption questions on the merits.

Findings on the Machineries Assessment

The Supreme Court examined Section 234(c) and the definitional framework in Section 199(o) and associated implementing rules. It articulated the twofold test for exemption of machineries: that the item be actually, directly, and exclusively used for the exempting purpose, and that by its nature and purpose it be indispensable to that purpose. The Court accepted the factual findings of the LBAA and CBAA, which described the assessed items — notably the main dam, spillway, taintor gates, diversion and tailrace tunnels, penstocks, surge tunnels, intake structures, and related gates — as multi-purpose conservation and water-conveyance structures. The Court found that these items perform functions other than power generation, including irrigation, flood control, and potable water supply, and that NPC’s own witnesses characterized several items as structures rather than operational machinery. The Court credited the boards’ factual determinations and concluded that the eleven properties were not actually, directly, and exclusively used for generation and transmission of electric power and thus were not exempt under Section 234(c). The Court also rejected NPC’s belated reliance on Section 234(e) for pollution control and environ

Case Syllabus (G.R. No. 207140)

Parties and Procedural Posture

National Power Corporation (NPC) was the petitioner before the Court of Tax Appeals (CTA) and the Supreme Court contesting real property tax assessments by the Municipality of Norzagaray, Bulacan.
Municipal Government of Norzagaray, the Municipal Assessor, and the Provincial Government of Bulacan were respondents in the administrative and judicial proceedings.
NPC first appealed the assessments to the Local Board of Assessment Appeals (LBAA), then to the Central Board of Assessment Appeals (CBAA), next to the CTA En Banc, and finally sought review under Rule 45 before the Supreme Court.
The LBAA and the CBAA conducted hearings, received evidence, and the CBAA affirmed the LBAA’s factual findings that upheld the assessments.
The CTA En Banc affirmed the CBAA decision and denied NPC’s petition on the ground that NPC failed to comply with the payment under protest requirement of Section 252 of the Local Government Code (LGC).
NPC filed the present Petition for Review under Rule 45, sought injunctive relief against a Warrant of Levy, and obtained a Temporary Restraining Order which the Supreme Court ultimately lifted.

Key Factual Allegations

The Municipality issued two Notices of Assessment: a Machineries Assessment for January 1, 1996 to December 31, 2005 totaling PHP 113,960,000.00 and a Land Assessment for January 1, 1997 to December 31, 2006 initially totaling PHP 82,845,188.60.
The Municipal Assessor later issued an amended assessment for the Land Assessment reducing the liability to PHP 6,485,422.60 for the covered period.
NPC alleged that the properties in the Machineries Assessment (including dam components, tunnels, gates, penstocks, and related structures) qualified as machinery and equipment actually, directly, and exclusively used for generation and transmission of electric power and were therefore exempt under Section 234 (c) of the LGC.
Respondents contended that the assessed properties were multi-purpose structures serving irrigation, water supply, flood control, and other public uses, and thus were not exclusively used for power generation.

Statutory Framework

Section 252 of the Local Government Code prescribes that no protest shall be entertained unless the taxpayer first pays the tax and files a written protest within thirty days from payment.
Section 226 provides the administrative remedy of appeal to the Local Board of Assessment Appeals following the assessor’s action.
Section 234 (c) exempts “machineries and equipment actually, directly and exclusively used” by GOCCs engaged in water supply or generation and transmission of electric power.
Section 216 and Section 218 (d) classify certain GOCC-owned lands and improvements as “special” and prescribe a ten percent assessment level for such special classes.
Section 199 (o) defines “machinery” for purposes of the LGC and its implementing rules, and Article 290 (o) of the Implementing Rules clarifies the machinery definition and its required actual use for exemption.

Issues Presented

Whether compliance with the payment under protest requirement in Section 252 of the LGC is a condition sine qua non before the LBAA may entertain an appeal.
Whether the properties listed in the Machineries Assessment qualified as machinery and equipment actually, directly, and exclusively used for electric power generation and transmission and were therefore exempt under Section 234 (c).
Whether the properties listed in the Land Assessment were exempt from real property tax or liable at the reduced amended assessment of PHP 6,485,422.60.

Contentions of the Parties

NPC contended that Ty v. Hon. Trampe and related authorities exempted it from the payment-under-protest requirement because it was challenging the assessor’s authority to assess tax-exempt properties rather than the correctness of an assessment amount.
Respondents argued that NPC challenged the cor