G.R. No. 180066 , July 22, 2008
Commissioner of Internal Revenue vs. Philippine Airlines, Inc.

FACTS

For its fiscal year ending March 31, 2001, Philippine Airlines (PAL) reported zero taxable income and possessed unapplied creditable withholding taxes. PAL consequently filed a claim for a tax refund with the Bureau of Internal Revenue (BIR). During the processing of this refund claim, the BIR instead issued a Preliminary Assessment Notice and a subsequent Formal Letter of Demand, assessing PAL for deficiency Minimum Corporate Income Tax (MCIT) in the amount of approximately ₱272 million for the same fiscal year. PAL protested the assessment, arguing that it was exempt from the MCIT under the provisions of its legislative franchise.
The BIR denied PAL’s protest, leading PAL to file a Petition for Review with the Court of Tax Appeals (CTA). The CTA Second Division ruled in favor of PAL, ordering the cancellation of the assessment. The CTA en banc affirmed this decision. The Commissioner of Internal Revenue (CIR) elevated the case to the Supreme Court, contending that PAL’s franchise did not grant it an exemption from the MCIT.

ISSUE

Whether Philippine Airlines, under its franchise (Presidential Decree No. 1590), is exempt from paying the Minimum Corporate Income Tax (MCIT) imposed by Section 27(E) of the National Internal Revenue Code (NIRC) of 1997.

RULING

The Supreme Court denied the petition and affirmed the rulings of the CTA. The Court held that PAL is exempt from the MCIT. The legal logic rests on the interpretation of PAL’s franchise, which states that PAL shall pay a “basic corporate income tax” equivalent to a specific percentage of its gross revenues, “in lieu of all other taxes.” The Court emphasized that tax exemptions granted by legislative franchises are to be construed strictly against the taxpayer, but such strict construction does not mean a strained interpretation that defeats the clear legislative intent.
The Court found that the MCIT, as defined under the Tax Code, is a direct income tax. It is computed based on gross income and functions as an alternative minimum tax payable when it exceeds the regular income tax due. Since PAL’s franchise prescribes a specific “basic corporate income tax” as a substitute for “all other taxes,” this substitution necessarily includes other forms of income tax, such as the MCIT. The franchise tax is PAL’s sole income tax liability. Therefore, imposing the MCIT on PAL would violate the “in lieu of all other taxes” clause in its franchise. The Court concluded that the CTA correctly canceled the deficiency MCIT assessment against PAL.