G.R. No. 245330-31 - Commissioner of Internal Revenue vs. Philippine Airlines, Inc.

The petitioners are the Commissioner of Internal Revenue (CIR) and Commissioner of Customs (COC), while the respondent is Philippine Airlines, Inc. (PAL).
PAL filed a claim for refund of specific taxes it paid on the importation of Jet A-1 aviation fuel between April and June 2005, amounting to PHP 258,629,496.00.
The Court of Tax Appeals (CTA) Division partially granted PAL's claim, ordering the refund of PHP 88,542,854.00, later amended to PHP 258,629,494.00 by CTA Second Division.
The CIR and COC filed motions for reconsideration, which were denied. They then filed separate petitions with the CTA En Banc, which were consolidated.
The CTA En Banc affirmed the refund entitlement of PAL, and the denial of the motions for reconsideration.
Petitioners elevated the case to the Supreme Court via a Petition for Review on Certiorari.

Under Sec. 13(2) of Presidential Decree (PD) No. 1590 (1978), PAL is exempt from all taxes, duties, royalties, and fees on importation of aircraft, fuel, and related materials, provided:

The imported articles are for PAL's use in transport and non-transport operations and incidental activities.
The imported articles are not locally available in reasonable quantity, quality, or price.

Initially, BIR Ruling No. 13-99 (January 29, 1999) confirmed PAL's exemption.
On January 29, 2003, BIR Ruling No. 001-2003 revoked this, relying on a December 20, 2002 Department of Energy (DOE) certification stating local availability of aviation fuel.

Between April and June 2005, PAL imported Jet A-1 fuel and paid specific taxes under protest.
PAL requested a refund with the CIR which was left unacted upon, prompting judicial claim before CTA in 2007.

PAL failed to exhaust administrative remedies.
BIR Ruling No. 001-2003 is valid and binding.
PAL did not appeal the ruling as required by law.
The factual determinations of DOE about local availability are conclusive under separation of powers.
Improper documentation of alleged tax payments.

After trial, CTA Second Division partially granted the refund, but limited amount due to lack of original receipts.
The CTA granted PAL’s motion to reopen the trial for further evidence.
PAL presented additional witnesses and documents including Authority to Release Imported Goods (ATRIGs) and certification from the Air Transportation Office (ATO).
The CIA and COC reconsidered and appealed to CTA En Banc.
The CTA En Banc affirmed PAL's exemption and refund claim, giving due weight to ATRIGs and ATO certifications.

ATRIGs indicated that the Jet A-1 fuel was to be used exclusively for PAL's domestic flight operations.
The ATO certified that aviation fuel was not available locally in reasonable quantity, quality, or price during the period.
DOE had previously issued a conflicting certification in 2002 stating local availability.
An independent CPA report showed that local prices of Jet A-1 fuel were significantly higher than imported prices.

Whether PAL complied with the second requirement under Section 13(2) of PD No. 1590 that the imported articles were for its use in its transport and non-transport operations and incidental activities.
Whether PAL complied with the third requirement that the imported Jet A-1 fuel was not locally available in reasonable quantity, quality, or price during the period of importation.
Whether the CTA En Banc erred in giving weight to ATRIGs and ATO certifications as prima facie evidence.
Whether the CTA En Banc erred in allowing the reopening of trial for presentation of additional evidence.