MIAA vs Parañaque: When Local Governments Cannot Tax National Assets

The Supreme Court's 2006 ruling in Manila International Airport Authority v. Court of Appeals (G.R. No. 155650) settled a critical question in Philippine local taxation: can a city impose real estate tax on the Ninoy Aquino International Airport (NAIA) Complex? The Court answered no, holding that the airport lands and buildings are owned by the Republic and that MIAA is not a government-owned or controlled corporation (GOCC) subject to local taxation. The decision clarifies the boundary between national government instrumentalities and local taxing powers under the Local Government Code of 1991.

The Dispute: A P624 Million Tax Bill

The City of Parañaque assessed MIAA for real estate tax on the NAIA Complex for taxable years 1992 to 2001, totaling over P624 million including penalties. When MIAA failed to pay, the city issued notices of levy and threatened to auction the airport lands and buildings at public sale.

MIAA sought to stop the auction, arguing that the properties are owned by the Republic and are devoted to public use. The city, on the other hand, invoked Section 193 of the Local Government Code, which withdrew the tax exemption privileges of GOCCs upon the Code's effectivity.

The Issue

The threshold issue was whether MIAA's airport lands and buildings are exempt from real estate tax under existing laws. If exempt, the tax assessments and all proceedings taken pursuant to them would be void.

The Ruling: Two Independent Grounds for Exemption

The Supreme Court ruled in favor of MIAA on two distinct grounds.

First Ground: MIAA Is Not a GOCC

The Court explained that a GOCC must be organized as a stock or non-stock corporation under the Administrative Code of 1987. MIAA fails this test on both counts.

MIAA is not a stock corporation because it has no capital stock divided into shares. Its charter provides for a capital contribution from the National Government, but this capital is not divided into shares, and MIAA has no stockholders or voting shares.

MIAA is also not a non-stock corporation. Non-stock corporations must have members and cannot distribute income to them. MIAA has no members, and its charter actually requires it to remit 20% of its annual gross operating income to the National Treasury—a feature inconsistent with a non-stock corporation.

Instead, the Court classified MIAA as a government instrumentality vested with corporate powers. Under the Administrative Code, an instrumentality is an agency of the National Government, not integrated within the department framework, vested with special functions, and endowed with some if not all corporate powers. MIAA exercises governmental powers like eminent domain and police authority, while also possessing corporate powers to operate the airport efficiently.

Because MIAA is a government instrumentality, Section 133(o) of the Local Government Code applies. This provision prohibits local governments from levying taxes, fees, or charges of any kind on the National Government, its agencies, and instrumentalities. The Court stressed that local taxing power is construed strictly against local governments, and any doubt is resolved against taxation—especially when local governments seek to tax national instrumentalities.

Second Ground: The Airport Lands Are Owned by the Republic

Even if MIAA were taxable, the properties themselves are exempt. The Court held that the airport lands and buildings are property of public dominion under the Civil Code, which includes things intended for public use, such as roads, canals, rivers, ports, and bridges constructed by the State. The term "ports" includes airports.

Properties of public dominion are owned by the State and are outside the commerce of man. They cannot be levied upon, encumbered, or sold at auction. The Court noted that the collection of terminal fees and landing charges does not change the public character of the airport—these are essentially user's taxes that fund the facility's maintenance.

The transfer of title to MIAA did not transfer beneficial ownership. MIAA holds the properties merely as a trustee for the Republic. The charter itself provides that no portion of the land may be disposed of unless specifically approved by the President—a clear indication that the Republic retained beneficial ownership.

The Local Government Code exempts from real estate tax any real property owned by the Republic of the Philippines. The exemption is lost only if the beneficial use is granted to a taxable person. MIAA, as a government instrumentality, is not a taxable person under Section 133(o).

The Exception: Leased Portions Are Taxable

The Court carved out one important exception. Portions of the airport lands that MIAA leases to private entities—such as hangars leased to private corporations—are not exempt from real estate tax. In those cases, MIAA has granted beneficial use for a consideration to a taxable person, making those portions subject to tax.

Practical Takeaways

• Local governments cannot tax national government instrumentalities. The prohibition under Section 133(o) of the Local Government Code is broad and covers taxes, fees, and charges of any kind.
• Not every government entity is a GOCC. An entity must be organized as a stock or non-stock corporation to fall under the GOCC definition. An instrumentality with corporate powers remains a government instrumentality.
• Property of public dominion is exempt from real estate tax. Properties devoted to public use, like airports, roads, and ports, are owned by the State and cannot be levied upon or sold at auction.
• The exemption has limits. If a government entity leases portions of its property to private parties for consideration, those portions become taxable.
• Tax exemptions for government agencies are liberally construed. Unlike exemptions claimed by private taxpayers, exemptions benefiting government instrumentalities are interpreted in favor of non-tax liability.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.