Air Canada vs. Commissioner of Internal Revenue

An offline international air carrier selling passage tickets in the Philippines through a general sales agent is a resident foreign corporation doing business in the Philippines, taxable under Section 28(A)(1) of the NIRC (subject to tax treaty limitations), and is not subject to the 2.5% Gross Philippine Billings tax under Section 28(A)(3) which applies only to revenue from carriage originating from the Philippines in a continuous and uninterrupted flight.

The case addresses the tax classification of "offline" international air carriers—foreign airlines without landing rights or flights to and from the Philippines but which sell tickets through local agents. It clarifies the distinction between a domestic corporation (organized under Philippine laws) and a resident foreign corporation (organized under foreign laws but engaged in trade or business in the Philippines), and settles the interplay between the NIRC's general income tax provisions and specific tax treaty obligations regarding the taxability of such carriers.

• Air Canada is a foreign corporation organized and existing under the laws of Canada.
• On April 24, 2000, the Civil Aeronautics Board (CAB) granted Air Canada authority to operate as an offline carrier in the Philippines for five years (expiring April 24, 2005), subject to certain conditions.
• As an offline carrier, Air Canada did not have flights originating from or coming to the Philippines and did not operate any aircraft in the country.
• On July 1, 1999, Air Canada engaged Aerotel Ltd., Corp. (Aerotel) as its general sales agent (GSA) in the Philippines to sell passage documents and tickets on its behalf.
• For the period ranging from the third quarter of 2000 to the second quarter of 2002, Air Canada, through Aerotel, filed quarterly and annual income tax returns and paid income tax on Gross Philippine Billings in the total amount of P5,185,676.77, representing 1.5% of gross revenues of P345,711,806.08.
• The Passenger General Sales Agency Agreement required Aerotel to act as fiduciary for Air Canada, follow Air Canada's GSA Manual and written instructions, submit annual sales plans for approval, obtain express written consent before entering contracts on Air Canada's behalf, and not accept appointments with other carriers without prior written consent, indicating a dependent agent relationship subject to the airline's control.
• Aerotel was required to provide its own premises, staff, and equipment, but was paid commissions on sales plus override commissions on flown revenues, and was reimbursed for authorized expenses supported by original invoices.
• Aerotel was required to keep separate books and records for all transactions connected with Air Canada's business and could not enter into contracts on behalf of Air Canada without the latter's express written consent.
• On November 28, 2002, Air Canada filed a written claim for refund before the Bureau of Internal Revenue alleging the taxes were erroneously paid based on the revised definition of Gross Philippine Billings under Section 28(A)(3)(a) of the 1997 NIRC.

• Air Canada argued that it is an "international carrier" specially classified and taxed under Section 28(A)(3) of the NIRC, not subject to the general provision imposing regular corporate income tax on resident foreign corporations under Section 28(A)(1).
• It contended that being exempt from the Gross Philippine Billings tax (as an offline carrier without flights originating from the Philippines) does not automatically render it subject to the 32% regular income tax.
• It argued that imposing the 32% tax would violate Article VIII of the Philippines-Canada Tax Treaty, which covenants not to impose a tax higher than 1.5% of gross revenue derived from sources within the Philippines, and would result in inequitable tax treatment compared to online carriers.
• It maintained that income derived from ticket sales was income from services rendered outside the Philippines (the carriage occurring abroad), hence not subject to Philippine taxation based on the situs of taxation principle for services.
• It asserted that Aerotel was an independent general sales agent acting in the ordinary course of its business under Article V(6) of the tax treaty, not creating a permanent establishment, citing VAT Ruling No. 003-04.
• It claimed entitlement to the refund regardless of potential liability under Section 28(A)(1) because the Bureau of Internal Revenue had not assessed any income tax liability, and internal revenue taxes cannot be the subject of set-off or compensation.

• The Commissioner of Internal Revenue maintained that Air Canada is a resident foreign corporation doing business in the Philippines through its local sales agent, citing Commissioner of Internal Revenue v. American Airlines, Inc. and Revenue Regulations No. 6-78, and is therefore subject to 32% corporate income tax on taxable income.
• It argued that the amount of P5,185,676.77 paid as Gross Philippine Billings tax was still short of the 32% income tax due for the period, hence no refund was due.
• It contended that Air Canada could not claim good faith ignorance of the law, given the NIRC became effective on January 1, 1998 and prior jurisprudence had already ruled on the taxability of offline carriers selling tickets through local agents.
• It asserted that the appointment of Aerotel created a "permanent establishment" under Article V(2)(i) of the Philippines-Canada Tax Treaty (premises used as a sales outlet), and alternatively under Article V(4) (dependent agent with authority to conclude contracts).

• Procedural Issues: Whether the Court of Tax Appeals erred in denying the claim for refund on the ground that Air Canada was subject to income tax under Section 28(A)(1) despite no prior assessment for such tax; and whether the Court of Tax Appeals had jurisdiction to determine Air Canada's tax liability under Section 28(A)(1) in a refund proceeding where no deficiency assessment had been issued.
• Substantive Issues: Whether Air Canada, as an offline international carrier selling passage documents through a general sales agent, is a resident foreign corporation subject to tax under Section 28(A)(1) of the NIRC; whether it is subject to the 2.5% tax on Gross Philippine Billings under Section 28(A)(3); whether the appointment of a local general sales agent constitutes a "permanent establishment" under Article V of the Philippines-Canada Tax Treaty; and whether the tax treaty applies to limit the tax rate to 1.5% of gross revenues.

• Procedural: The Court held that the Court of Tax Appeals did not err in determining Air Canada's potential tax liability under Section 28(A)(1) in the refund proceeding. Citing SMI-ED Philippines Technology, Inc. and South African Airways, the Court ruled that in an action for refund of taxes allegedly erroneously paid, the CTA may determine whether there are taxes that should have been paid in lieu of the taxes paid. This determination is incidental and necessary to resolve the issue of whether a refund should be granted, as a claim for refund assumes the correctness of the tax return filed; if the return was improper, the correctness of the amount paid and the entitlement to refund become questionable. The Court distinguished this from the general rule against set-off of taxes, noting that the CTA was not collecting a deficiency but merely determining if an overpayment existed.
• Substantive: The Court ruled that (1) Air Canada is not liable for the 2.5% Gross Philippine Billings tax under Section 28(A)(3) because such tax attaches only when the carriage of persons, baggage, cargo, and mail originates from the Philippines in a continuous and uninterrupted flight, which Air Canada as an offline carrier does not perform; (2) Air Canada is a resident foreign corporation under Section 28(A)(1) because it is "engaged in trade or business within the Philippines" through its general sales agent Aerotel, whose activities (selling tickets, promoting transportation, following airline standards) demonstrate continuity of commercial dealings and performance of acts normally incident to Air Canada's business organization; (3) Aerotel constitutes a dependent agent creating a "permanent establishment" under Article V of the Philippines-Canada Tax Treaty, as it acted under the detailed instructions, control, and standards of Air Canada, distinguishing it from an independent agent acting in the ordinary course of its own business; and (4) While Air Canada is taxable as a resident foreign corporation, Article VIII of the Philippines-Canada Tax Treaty limits the tax to a maximum of 1.5% of gross revenues derived from Philippine sources, prevailing over the general 32% rate under the NIRC by virtue of treaty supremacy (pacta sunt servanda). The refund claim was denied because the amount paid (P5,185,676.77, representing 1.5% of gross revenues) would be insufficient to cover the liability under the regular 32% tax rate on taxable income (gross income less deductions), meaning no overpayment existed.

• Resident Foreign Corporation (Section 28(A)(1), NIRC) — Defined as a foreign corporation engaged in trade or business within the Philippines. The Court applied this to classify Air Canada based on its continuous commercial activities through a local sales agent, distinguishing it from a non-resident foreign corporation not engaged in trade or business.
• Doing Business / Engaged in Trade or Business — Defined as implying continuity of commercial dealings and arrangements, and contemplating the performance of acts or works or the exercise of functions normally incident to, and in progressive prosecution of, commercial gain or the purpose of the business organization. The Court applied this to conclude that selling tickets through a local agent constitutes doing business in the Philippines.
• International Carrier and Gross Philippine Billings (Section 28(A)(3), NIRC) — Defined as applying specifically to carriers with gross revenue derived from carriage originating from the Philippines in a continuous and uninterrupted flight. The Court applied this to exclude offline carriers without such flights from this specific tax regime.
• Permanent Establishment (Dependent vs. Independent Agent) — Under Article V of tax treaties, an enterprise is deemed to have a permanent establishment if it has a dependent agent (one under the control of the principal regarding means and results) who habitually exercises authority to conclude contracts, as opposed to an independent agent acting in the ordinary course of its own business. The Court found Aerotel to be a dependent agent.
• Pacta Sunt Servanda and Treaty Supremacy — The principle that treaties must be performed in good faith and have the force and effect of law as part of the land. The Court applied this to give precedence to Article VIII of the Philippines-Canada Tax Treaty over the general 32% tax rate in the NIRC, limiting the tax to 1.5% of gross revenues.
• Tax Refund Proceedings and Determination of Correct Tax Liability — The doctrine that in an action for tax refund, the court may determine the proper category of tax that should have been paid to ascertain whether an overpayment exists, even if no deficiency assessment has been issued by the Commissioner.

• "An offline international air carrier selling passage tickets in the Philippines, through a general sales agent, is a resident foreign corporation doing business in the Philippines."
• "As such, it is taxable under Section 28(A)(1), and not Section 28(A)(3) of the 1997 National Internal Revenue Code, subject to any applicable tax treaty to which the Philippines is a signatory."
• "There is no specific criterion as to what constitutes 'doing' or 'engaging in' or 'transacting' business. Each case must be judged in the light of its peculiar environmental circumstances. The term implies a continuity of commercial dealings and arrangements, and contemplates, to that extent, the performance of acts or works or the exercise of some of the functions normally incident to, and in progressive prosecution of commercial gain or for the purpose and object of the business organization."
• "Tax treaties are entered into to reconcile the national fiscal legislations of the contracting parties and, in turn, help the taxpayer avoid simultaneous taxations in two different jurisdictions."
• "The obligation to comply with a tax treaty must take precedence over the objective of RMO No. 1-2000."
• "The determination of the proper category of tax that petitioner should have paid is an incidental matter necessary for the resolution of the principal issue, which is whether petitioner was entitled to a refund."

• Commissioner of Internal Revenue v. British Overseas Airways Corporation — Cited as controlling precedent establishing that a foreign airline with no landing rights but selling tickets through a local agent is a resident foreign corporation engaged in business in the Philippines.
• South African Airways v. Commissioner of Internal Revenue — Cited for the ruling that Section 28(A)(3) does not categorically exempt international carriers from Section 28(A)(1), and for the procedural doctrine that the CTA may determine proper tax liability in refund cases; also cited for the interpretation that offline carriers are subject to regular income tax while online carriers are subject to GPB tax.
• Commissioner of Internal Revenue v. American Airlines, Inc. — Cited by respondent and court as precedent that foreign airlines selling tickets through local agents are resident foreign corporations.
• Commissioner of Internal Revenue v. S.C. Johnson and Son, Inc. — Cited for the definition of international juridical double taxation and the purpose of tax treaties.
• Deutsche Bank AG Manila Branch v. Commissioner of Internal Revenue — Cited for the principle that tax treaties have the force and effect of law and must take precedence over administrative issuances.
• SMI-ED Philippines Technology, Inc. v. Commissioner of Internal Revenue — Cited for the procedural doctrine that the CTA may determine the proper category of tax in a refund proceeding without violating the prohibition against deficiency assessments in such cases.
• United Airlines, Inc. v. Commissioner of Internal Revenue — Cited for the practice of denying refunds where the taxpayer has underpaid other taxes for the same period.
• Republic v. Mambulao Lumber Co., et al. — Cited for the general principle that internal revenue taxes cannot be the subject of set-off or compensation.
• Francia v. Intermediate Appellate Court — Cited for the requisites of legal compensation and the principle that taxes cannot be offset against claims against the government.

• Section 28(A)(1) and (3), National Internal Revenue Code of 1997 — Sections defining the tax rates and classifications for resident foreign corporations (32% on taxable income) and international carriers (2.5% on Gross Philippine Billings), respectively.
• Article VIII, Philippines-Canada Tax Treaty — Treaty provision limiting the tax on profits from operation of aircraft in international traffic to 1.5% of gross revenues derived from sources within the Philippines.
• Article V, Philippines-Canada Tax Treaty — Definition of "permanent establishment" including dependent agents under paragraph 4 and premises used as sales outlets under paragraph 2(i), and excluding independent agents under paragraph 6.
• Article II, Section 2, 1987 Philippine Constitution — Provision adopting generally accepted principles of international law as part of the law of the land, basis for treaty supremacy (pacta sunt servanda).
• Article VII, Section 21, 1987 Philippine Constitution — Provision requiring Senate concurrence for treaties to be valid and effective, giving treaties the effect equivalent to statutory law.
• Article 1868, Civil Code of the Philippines — Definition of agency, cited in relation to the determination of dependent agent status under the tax treaty.
• Section 3(d), Republic Act No. 7042 (Foreign Investments Act of 1991) — Definition of "doing business" including appointing representatives or distributors operating under the full control of the foreign corporation.