VAT Exemption for Steam Supply: Protecting Taxpayers From Erroneous Payments

The Supreme Court’s 2005 ruling in Philippine Geothermal, Inc. v. Commissioner of Internal Revenue (G.R. No. 154028) clarifies an important principle in Philippine tax law: when a transaction is exempt from value-added tax (VAT), the government must refund the full amount erroneously paid, regardless of whether the supplier shifted the tax burden to its customer. The decision protects taxpayers who pay taxes in good faith on transactions later found to be exempt.

The Facts of the Case

Philippine Geothermal, Inc. (PGI), a foreign corporation engaged in geothermal energy exploration, entered into a service contract with the National Power Corporation (NPC) to supply steam. From September 1995 to February 1996, PGI billed NPC with 10% VAT on its service fees. NPC did not pay the VAT, so PGI remitted the tax itself—amounting to P39,328,775.41—to avoid any deficiency assessment.

PGI later filed an administrative claim for refund with the Bureau of Internal Revenue (BIR), arguing that the sale of steam to NPC was a VAT-exempt transaction under the National Internal Revenue Code. PGI anchored its claim on Fiscal Incentives Review Board (FIRB) Resolution No. 17-87, which restored NPC’s tax exemption privileges under Commonwealth Act No. 120, as amended.

When the BIR failed to act, PGI filed a petition before the Court of Tax Appeals (CTA) to protect its claim.

The Sole Issue

The central question was whether PGI’s supply of steam to NPC was a VAT-exempt transaction. If it was, the next question concerned the proper amount of refund.

The Ruling: Steam Supply to NPC Is VAT-Exempt

The Supreme Court affirmed that the supply of steam to NPC is exempt from VAT. The Court traced the legislative history of NPC’s tax exemptions, noting that Republic Act No. 358, Commonwealth Act No. 120, and subsequent laws consistently intended NPC to be completely tax-exempt from all forms of taxes—both direct and indirect.

The Court cited Maceda v. Macaraig, Jr. (G.R. No. 88291), which held that NPC’s exemption is broad enough to include both direct and indirect taxes. A BIR ruling dated March 15, 1996 likewise confirmed that PGI’s supply of steam to NPC for electricity generation was exempt from VAT.

The Refund: Full Amount, Not Partial

The CTA had granted only a partial refund of P9,012,310.26, reasoning that NPC had reimbursed PGI for the remaining P30,316,465.15 in VAT. The Supreme Court disagreed.

The Court held that whether NPC reimbursed PGI is irrelevant to the refund claim. The CTA erred in relying on official receipts and summary payments; it should have relied on the VAT Returns filed by PGI to determine the actual amount remitted to the BIR.

The Court applied the principle of solutio indebiti under the Civil Code: when something is received without a right to demand it and was unduly delivered through mistake, the obligation to return it arises. The government had to restore the full P39,328,775.41 to PGI.

Who Can Claim a VAT Refund?

A key holding of the case: for indirect taxes like VAT, the proper party to seek a refund is the statutory taxpayer—the person on whom the tax is imposed by law and who paid it—even if the burden was shifted to another. PGI had legal personality to claim the refund because it made the erroneous payments in good faith.

Practical Takeaways

• VAT-exempt transactions must be identified before payment. If a transaction falls under an exemption (such as sales to tax-exempt entities like NPC), the supplier should not bill VAT at all.
• Taxpayers who pay VAT in good faith on exempt transactions are entitled to a full refund. The government cannot keep erroneously collected taxes.
• Reimbursement by the customer does not bar a refund claim. The relationship between supplier and customer is separate from the supplier’s claim against the BIR.
• VAT Returns, not official receipts, are the best evidence of tax paid. Taxpayers should preserve their filed returns to support refund claims.
• Claims for refund are construed strictly against the claimant. The taxpayer bears the burden of proving entitlement with sufficient and competent evidence.

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