South African Airways vs. Commissioner of Internal Revenue

An off-line international air carrier without flights originating from the Philippines, which sells passage documents through a general sales agent in the country, is classified as a resident foreign corporation engaged in trade or business in the Philippines subject to the general rule of Section 28(A)(1) of the 1997 NIRC, imposing a 32% income tax on taxable income from sources within the Philippines, rather than the exceptional 2.5% tax on Gross Philippine Billings under Section 28(A)(3)(a) which applies exclusively to carriers deriving revenue from carriage originating from the Philippines; consequently, such carrier is not exempt from income tax, and its claim for refund of taxes paid under the inapplicable GPB provision must be resolved only after a determination of its actual liability under the general rule, as claims for tax refund partake of the nature of exemptions strictly construed against the claimant who bears the burden of proving entitlement thereto.

The dispute stems from amendments to the National Internal Revenue Code concerning the taxation of international air carriers and the definition of Gross Philippine Billings (GPB). Under prior tax laws, GPB was defined by the place of sale of passage documents. The 1997 NIRC altered this definition to require carriage "originating from the Philippines in a continuous and uninterrupted flight," effectively excluding off-line carriers—those without landing rights or flights originating from the Philippines—from the scope of the GPB tax. This legislative change created ambiguity regarding the tax status of off-line carriers, specifically whether the inapplicability of the GPB tax provision results in their complete exemption from Philippine income tax or subjects them instead to the general income tax provisions applicable to resident foreign corporations engaged in trade or business.

• Petitioner South African Airways is a foreign corporation organized and existing under the laws of the Republic of South Africa with its principal office in Johannesburg, operating as an internal air carrier without landing rights in the Philippines, not registered with the Securities and Exchange Commission nor licensed to do business in the Philippines, but maintaining a general sales agent in the Philippines, Aerotel Limited Corporation, which sells passage documents for compensation for petitioner's off-line flights for carriage of passengers and cargo between points outside the territorial jurisdiction of the Philippines.
• For taxable year 2000, petitioner filed separate quarterly and annual income tax returns for its off-line flights, reporting total Gross Philippine Billings of PhP 1,727,766.38 and paying the corresponding 2.5% tax thereon.
• On February 5, 2003, petitioner filed a claim for refund with the Bureau of Internal Revenue, Revenue District Office No. 47, asserting that the amount of PhP 1,727,766.38 was erroneously paid as tax on Gross Philippine Billings, and when this claim was unheeded, petitioner filed a Petition for Review with the Court of Tax Appeals on April 14, 2003, docketed as CTA Case No. 6656.
• The Court of Tax Appeals First Division denied the petition on May 10, 2006, ruling that petitioner is a resident foreign corporation engaged in trade or business in the Philippines and is therefore liable for the 32% income tax under Section 28(A)(1) of the 1997 NIRC on its income derived from sales of passage documents in the Philippines, rather than being limited to the 2.5% GPB tax, and consequently denied the claim for refund on the ground that petitioner had not overpaid its tax liability.
• The CTA First Division denied petitioner's Motion for Reconsideration on August 11, 2006, and the CTA En Banc subsequently affirmed this denial on July 19, 2007, and denied the Motion for Reconsideration on October 30, 2007, leading to the instant petition before the Supreme Court.

• Petitioner contends that as an off-line international carrier without flights originating from the Philippines, it is not liable for the 2.5% tax on Gross Philippine Billings under Section 28(A)(3)(a) of the 1997 NIRC, and further argues that because this specific provision is inapplicable to it, the existence of this provision precludes the application of Section 28(A)(1), thereby resulting in its complete exemption from any Philippine income tax liability.
• Petitioner asserts that the intention of Congress in amending the definition of Gross Philippine Billings in the 1997 NIRC, allegedly manifested in the legislative history and statements by Senator Juan Ponce Enrile during deliberations, was to exempt off-line carriers from income tax entirely.
• Petitioner argues that the decision in Commissioner of Internal Revenue v. British Overseas Airways Corporation, which held that off-line carriers are doing business in the Philippines and subject to income tax, should not apply because it was decided under the 1939 NIRC, and the 1997 NIRC allegedly introduced substantive changes regarding the taxation of resident foreign corporations that exempt off-line carriers.
• Petitioner maintains that its claim for tax refund can proceed independently of any tax deficiency assessment and that the Court of Tax Appeals erred in effectively offsetting its GPB tax payments against a potential liability under Section 28(A)(1) without a formal assessment complying with the formalities of Revenue Regulations No. 12-99, arguing that such offsetting constitutes legal compensation which is unavailing under Article 1279 of the Civil Code because taxes and debts are distinct.

• The Commissioner of Internal Revenue argues that petitioner is a resident foreign corporation engaged in trade or business in the Philippines through its general sales agent, Aerotel, thereby subjecting its income from sales of passage documents to the 32% income tax on taxable income from sources within the Philippines under Section 28(A)(1) of the 1997 NIRC.
• The respondent contends that Section 28(A)(3)(a) is merely an exception to the general rule under Section 28(A)(1), applicable only to international carriers with flights originating from the Philippines, and since petitioner does not meet this criterion, it falls under the general rule pursuant to the maxim exception firmat regulam in casibus non exceptis.
• The respondent asserts that claims for tax refund partake of the nature of exemptions which must be strictly construed against the claimant, and since petitioner failed to prove convincingly that it was entitled to the specific exemption claimed (complete exemption from tax), its claim for refund must fail.
• The respondent argues that the tax refund claim should be resolved jointly with the determination of any tax deficiency to avoid multiplicity of proceedings, citing precedent that a refund assumes the correctness of the tax return which is put in doubt by the existence of a deficiency assessment, and that the grant of a refund without determining the proper tax due would result in unnecessary additional litigation.

• Procedural Issues: Whether the Court of Tax Appeals erred in denying petitioner's claim for tax refund without first receiving evidence to determine petitioner's actual tax liability under Section 28(A)(1) of the 1997 NIRC, and whether the refund claim can proceed independently of a deficiency tax assessment or must be resolved jointly therewith to avoid multiplicity of suits and unnecessary difficulties or expenses.
• Substantive Issues: Whether petitioner, as an off-line international carrier selling passage documents through a general sales agent in the Philippines, qualifies as a resident foreign corporation engaged in trade or business subject to the 32% income tax under Section 28(A)(1) of the 1997 NIRC; whether the income derived from such sales constitutes Philippine-source income subject to Philippine income tax; and whether petitioner is entitled to a refund or tax credit of the erroneously paid GPB tax given its alleged total exemption from income tax under the interpretation of the 1997 NIRC.

• Procedural: The Supreme Court set aside the July 19, 2007 Decision and October 30, 2007 Resolution of the Court of Tax Appeals En Banc and remanded the case to the CTA En Banc for further proceedings, specifically to receive evidence for both parties to establish petitioner's taxable income and compute the corresponding tax liability under Section 28(A)(1) of the 1997 NIRC, holding that a determination of such liability is necessary before pronouncing whether a tax refund exists or a tax deficiency is due, and recognizing that while taxes generally cannot be subject to set-off or compensation under Article 1279 of the Civil Code, the existence of a deficiency assessment creates a doubt as to the truth and accuracy of the facts stated in the tax return which undermines the foundation of the refund claim, thereby necessitating joint determination to avoid absurdity and multiplicity of proceedings.
• Substantive: The Supreme Court ruled that petitioner is a resident foreign corporation engaged in trade or business in the Philippines, as maintaining a general sales agent to sell passage documents constitutes doing business, and its income from such sales is income from sources within the Philippines subject to tax; held that Section 28(A)(1) imposes a general 32% tax on taxable income of resident foreign corporations, while Section 28(A)(3)(a) constitutes a specific exception applicable only to international carriers deriving revenue from carriage originating from the Philippines, which petitioner is not, thus petitioner falls under the general rule pursuant to the maxim exception firmat regulam in casibus non exceptis; rejected petitioner's reliance on legislative history to prove exemption, holding that statutory interpretation must rely primarily on the plain language of the statute and that individual statements of legislators are not controlling; and denied the refund claim pending the computation of actual tax liability under Section 28(A)(1), applying the principle that claims for tax refund partake of the nature of exemptions strictly construed against the claimant who failed to discharge the burden of proving entitlement thereto.

• Exception firmat regulam in casibus non exceptis (The exception confirms the rule in cases not excepted) — This legal maxim means that where there is a general provision and a specific exception, matters not falling within the exception are governed by the general rule. The Court applied this to hold that Section 28(A)(3)(a) of the 1997 NIRC (the 2.5% GPB tax) is an exception to Section 28(A)(1) (the general 32% income tax for resident foreign corporations); since petitioner, as an off-line carrier without flights originating from the Philippines, does not fall within the exception, it is subject to the general rule.
• Strictissimi juris (Strict construction of tax exemptions) — Tax exemptions, including claims for tax refunds which partake of the nature of exemptions, must be construed strictly against the taxpayer and in favor of the taxing authority. The Court applied this doctrine to place the burden of proof on petitioner to demonstrate convincingly its entitlement to exemption, which it failed to discharge.
• Doctrine of Source of Income — Income is considered derived from sources within the Philippines if the activity generating the income occurs within the country. The Court reaffirmed that income derived by a foreign corporation from the sale of passage documents in the Philippines, through a general sales agent, is Philippine-source income subject to Philippine income tax.
• "Doing Business" through an Agent — A foreign corporation which sells products or services in the Philippines through an independent agent or representative is considered engaged in trade or business in the Philippines. The Court applied British Overseas Airways to establish that off-line carriers with general sales agents in the Philippines are doing business in the country and classified as resident foreign corporations.
• Tax Cannot be Subject to Compensation — Based on Philex Mining and Francia, taxes are obligations of subjects to their sovereign and cannot be offset against claims the taxpayer may have against the government under Article 1279 of the Civil Code, as the government and taxpayer are not mutually creditors and debtors in a contractual sense.

• "Since an action for a tax refund partakes of the nature of an exemption, which cannot be allowed unless granted in the most explicit and categorical language, it is strictly construed against the claimant who must discharge such burden convincingly."
• "exception firmat regulam in casibus non exceptis, which means, a thing not being excepted must be regarded as coming within the purview of the general rule."
• "A cardinal rule in the interpretation of statutes is that the meaning and intention of the law-making body must be sought, first of all, in the words of the statute itself, read and considered in their natural, ordinary, commonly-accepted and most obvious significations, according to good and approved usage and without resorting to forced or subtle construction."
• "We have consistently ruled that there can be no off-setting of taxes against the claims that the taxpayer may have against the government. A person cannot refuse to pay a tax on the ground that the government owes him an amount equal to or greater than the tax being collected."
• "The grant of a refund is founded on the assumption that the tax return is valid, that is, the facts stated therein are true and correct. The deficiency assessment, although not yet final, created a doubt as to and constitutes a challenge against the truth and accuracy of the facts stated in said return which, by itself and without unquestionable evidence, cannot be the basis for the grant of the refund."

• Commissioner of Internal Revenue v. Acesite (Philippines) Hotel Corporation, G.R. No. 147295, February 16, 2007 — Cited for the principle that an action for a tax refund partakes of the nature of an exemption and must be strictly construed against the claimant who must discharge the burden convincingly.
• Commissioner of Internal Revenue v. British Overseas Airways Corporation, No. L-65773-74, April 30, 1987 — Applied as controlling precedent establishing that off-line air carriers having general sales agents in the Philippines are engaged in trade or business in the Philippines and that their income from sales of passage documents in the Philippines is income from within the Philippines, subject to income tax.
• Espino v. Cleofe, No. L-33410, July 13, 1973 — Cited to support the rule that statutory interpretation must rely on the plain language of the statute rather than individual statements of legislators, which are not controlling.
• Philex Mining Corporation v. Commissioner of Internal Revenue, G.R. No. 125704, August 28, 1998 — Cited for the doctrine that taxes cannot be subject to compensation because the government and taxpayer are not creditors and debtors of each other, and taxes are due to the government in its sovereign capacity.
• Francia v. Intermediate Appellate Court — Cited to reiterate that taxes cannot be subject to set-off or compensation and that a person cannot refuse to pay a tax on the ground that the government owes him an equal or greater amount.
• Commissioner of Internal Revenue v. Court of Tax Appeals (Citytrust case), G.R. No. 106611, July 21, 1994 — Cited for the exception allowing joint determination of refund and deficiency assessment to avoid multiplicity of suits and the principle that a refund assumes the validity of the return which is challenged by a deficiency assessment.

• Section 28(A)(1) of the National Internal Revenue Code of 1997 — Provides the general rule that resident foreign corporations engaged in trade or business in the Philippines are subject to a 32% income tax (effective January 1, 2000) on taxable income derived from all sources within the Philippines.
• Section 28(A)(3)(a) of the National Internal Revenue Code of 1997 — Defines "Gross Philippine Billings" as gross revenue derived from carriage of persons, excess baggage, cargo and mail originating from the Philippines in a continuous and uninterrupted flight, and imposes a 2.5% tax thereon, applicable as an exception to the general rule for international air carriers meeting this specific criterion.
• Article 1279 of the Civil Code — Lists the requisites for legal compensation, cited to explain why taxes generally cannot be offset against claims against the government, as the government and taxpayer are not mutually creditors and debtors.
• Section 72, Chapter XI of the National Internal Revenue Code of 1997 (formerly Section 82, Chapter IX of the 1977 NIRC) — Provides that when an assessment is made for false or fraudulent returns, no tax collected under such assessment shall be recovered unless the return is proved not false or fraudulent, cited to support the joint determination of refunds and deficiencies.