Case Summary (G.R. No. 255961)
Petitioner’s Importations and Excise Taxes Paid
Petron imported alkylate on five occasions between July 22 and November 6, 2012. Excise taxes were assessed and collected per BOC Customs Memorandum Circular No. 164‑2012 implementing a BIR letter dated June 29, 2012. The excise tax amounts by import entry totaled P219,153,851.00 across five IEIRD numbers corresponding to the listed vessel arrivals.
Administrative Claims and Statutory Framework
Petitioner filed two administrative claims for refund: (1) October 10, 2014 for P148,546,113.00 (importations from October 24 to December 5, 2012) and (2) January 23, 2015 for P70,607,738.00 (importations from February 8 to July 23, 2013). Applicable statutory provisions involved include Section 148(e) of the NIRC (1997, as amended) — taxing “naphtha, regular gasoline and other similar products of distillation” — and Section 229 (recovery of tax erroneously or illegally collected) governing refund claims and the two‑year prescription for suit.
Procedural History in the Court of Tax Appeals
Respondent did not act on the administrative claims, prompting Petron’s petitions to the CTA (CTA Case Nos. 8914 and 8981), which were consolidated. The CTA Special Second Division (Decision dated December 18, 2018) denied the petitions. The CTA En Banc issued an affirming Decision on July 22, 2020 and, after a Motion for Reconsideration, a Resolution on February 18, 2021 denying reconsideration for lack of the required affirmative votes to alter the decision. Petron then elevated the matter to the Supreme Court via Petition for Review on Certiorari under Rule 45.
CTA Special Second Division’s Reasoning
The Special Second Division found Petron’s administrative and judicial claims timely but denied relief on the merits. It concluded that alkylate is akin to naphtha and regular gasoline because its feedstocks (light olefins and isobutane) are derived from distillation processes; thus, alkylate was treated as a product of distillation subject to excise tax under Sec. 148(e). The Division also cited prior CTA jurisprudence (CTA Case No. 9111) and considered alkylate a gasoline‑like product. It rejected the double taxation argument, reasoning that import excise on alkylate is distinct from tax on domestically produced gasoline.
CTA En Banc’s Determination and Vote Dynamics
The CTA En Banc affirmed the Special Second Division, emphasizing (a) the BIR/BIR‑BOC administrative interpretation that alkylate qualifies as a product similar to naphtha, (b) the general rule that tax refunds are in the nature of exemptions and interpreted strictly against taxpayers, and (c) the absence of a clear showing that alkylate fits outside the Sec. 148(e) category. On reconsideration some members later favored reversal based on strict rules in the imposition of taxes and expert/doctrinal evidence, but the required number of votes to reverse the earlier decision was not obtained; hence the motion was denied.
Issues Raised on Supreme Court Review
Petitioner’s principal contentions were: (1) the CTA misapplied the strict construction rule for tax exemptions where Petron’s claim was premised on absence of statutory authority to tax alkylate (i.e., erroneous assessment), not on entitlement to an exemption; (2) alkylate is produced by alkylation, not distillation, and is therefore not covered by Sec. 148(e); and (3) taxing alkylate and subsequently taxing the finished gasoline would constitute unlawful double taxation. Respondent relied on Sec. 148(e)’s language and on administrative interpretations (BIR/BOC) treating alkylate as a product similar to naphtha.
Supreme Court’s Controlling Doctrinal Point on Construction of Tax Laws
The Court held that where a refund claim is based on erroneous payment or the absence of statutory authority to tax, the applicable doctrine is strict interpretation in the imposition of taxes — i.e., statutes imposing taxes are construed strictly against the government and in favor of the taxpayer. This is distinct from the strict construction rule applied to tax exemptions (which treats exemptions as legislative graces to be strictly construed against the taxpayer). Thus, because Petron’s claim alleged there was no law imposing the excise tax on alkylate, the Court applied the strict construction rule favoring the taxpayer.
Statutory Text of Section 148(e) and Its Proper Scope
Section 148(e) taxes “Naphtha, regular gasoline and other similar products of distillation.” The Court emphasized that the statutory phrase refers to products that are themselves products of distillation. The provision does not extend taxation to products merely because their raw materials or feedstocks originate from distillation. Therefore, to fall within Sec. 148(e) an article must be a product of distillation in itself.
Factual and Expert Evidence Concerning Alkylate’s Nature
The Court relied on the evidentiary record showing: (a) alkylate is produced by alkylation (a chemical conversion process) from light olefins and isobutane rather than by distillation; (b) only isobutane (of the two feedstocks) can be produced by distillation, while light olefins typically arise from FCC or coker units; (c) DOE correspondence and petitioner’s expert testimony established material differences between alkylate and naphtha/regular gasoline in boiling range, volatility, recovery process, olefin/aromatic/sulfur contents, and drivability indices; and (d) alkylate is an intermediate blending component intended to be used as blend stock, not a finished motor fuel, and cannot be sold as motor fuel without violating PNS/Clean Air Act specifications. These expert and DOE statements were credited over the BIR laboratory head’s conclusions, which the Court found to lack substantive testing and detail.
Application of Ejusdem Generis and Statutory Construction
Applying ejusdem generis, the Court interpreted “other similar products of distillation” as limited to articles akin to naphtha and regular gasoline — i.e., products that are themselves products of distillation and share their relevant characteristics. Given the differences in production process and properties, alkylate does not fall within that category and therefore is not covered by Sec. 148(e).
Administrative Interpretation Versus Judicial Review
The Court reaffirmed that administrative interpretations and circulars (e.g., B
Case Syllabus (G.R. No. 255961)
Parties and Nature of the Case
- Petitioner: Petron Corporation, a domestic corporation engaged in the manufacture and marketing of petroleum products and owner of an oil refinery in Bataan.
- Respondent: Commissioner of Internal Revenue (CIR), duly appointed.
- Nature of action: Petition for Review on Certiorari under Rule 45 contesting denial of administrative and judicial claims for refund or issuance of tax credit certificates for excise taxes paid on importation of alkylate.
- Relief sought: Refund or tax credit certificate for excise taxes totaling P219,153,851.00 allegedly erroneously, wrongfully, illegally and excessively imposed and collected under Customs Memorandum Circular No. 164-2012 implementing a BIR Letter (June 29, 2012).
Antecedent Facts — Importations and Excise Taxes Paid
- Importations of alkylate occurred on various dates from July 22, 2012 to November 6, 2012 and were subjected to excise tax per CMC No. 164-2012 (implementing BIR Letter dated June 29, 2012).
- Aggregate excise taxes paid: P219,153,851.00, broken down as follows:
- VESSEL: MIT High Energy — Arrival: July 22, 2012 — Bill of Lading: ML-5918 — IEIRD No.: 122844547 — EXCISE TAX PAID: P55,945,089.00
- VESSEL: M/T Golden Fortune — Arrival: August 12, 2012 — Bill of Lading: CTK 1985 — IEIRD No.: 122773043 — EXCISE TAX PAID: P14,662,649.00
- VESSEL: M/T Sun Lilac — Arrival: September 12, 2012 — Bill of Lading: SLC12010-DSB01 — IEIRD No.: 124315222 — EXCISE TAX PAID: P35,089,705.00
- VESSEL: M/T Polaris — Arrival: October 6, 2012 — Bill of Lading: POL12007-DSBT01 — IEIRD No.: 125253615 — EXCISE TAX PAID: P56,097,804.00
- VESSEL: M/T No. 3 Heung - A Pioneer — Arrival: November 6, 2012 — Bill of Lading: HASL0941TACA251 — IEIRD No.: 125644382 — EXCISE TAX PAID: P57,358,604.00
Administrative Claims for Refund and Initial Judicial Filings
- Petitioner filed two administrative claims for refund with the BIR alleging erroneous imposition under CMC No. 164-2012:
- First claim: filed October 10, 2014 for P148,546,113.00 (covering importations from October 24, 2012 to December 5, 2012).
- Second claim: filed January 23, 2015 for P70,607,738.00 (covering February 8, 2013 to July 23, 2013).
- Respondent (BIR) did not act on both claims.
- Petitioner filed two separate Petitions for Review with the Court of Tax Appeals (CTA):
- CTA Case No. 8914 (relating to first claim) filed October 23, 2014.
- CTA Case No. 8981 (relating to second claim) filed February 6, 2015.
- The CTA Second Division ordered consolidation of the two cases.
Ruling of the CTA Special Second Division (Decision dated December 18, 2018)
- Disposition: Denied petitioner’s petitions for lack of merit; fallo: "The instant Petitions for Review are DENIED for lack of merit. SO ORDERED."
- Findings:
- Timeliness: Both administrative and judicial claims were timely filed within the two-year prescriptive period.
- Taxability: Petitioner not entitled to refund because alkylate was found to be a product of distillation or similar thereto:
- Accepts testimony that raw materials for alkylate (light olefins and isobutane) are derived from petroleum and are products of distillation.
- Holds that because raw materials are products of distillation, alkylate "initially undergoes" distillation and is similar to naphtha; therefore subject to excise tax under Sec. 148(e) of the 1997 NIRC.
- Cited precedent: CTA Case No. 9111 (Petron Corporation v. Commissioner of Internal Revenue) held alkylate possesses properties similar to gasoline or is considered gasoline although not in its finished state.
- Petitioner’s motion for reconsideration before the Special Second Division was denied (Resolution dated April 30, 2019).
CTA En Banc Decision (July 22, 2020) and Reasoning
- Disposition: Denied petition for review; affirmed the CTA Special Second Division Decision (fallo: "the Petition for Review dated 29 May 2019 is DENIED for lack of merit... AFFIRMED. SO ORDERED.").
- Reasoning and holdings:
- Agreed with Special Second Division that because raw materials for alkylate are products of distillation, alkylate is a product of distillation similar to naphtha and regular gasoline.
- Relied on BIR Letter by former Commissioner Kim S. Jacinto-Henares attesting that alkylate qualifies as product similar to naphtha used as gasoline blending component.
- Applied rule that tax refunds are in nature of tax exemptions and must be construed strictly against the taxpayer; found petitioner failed to clearly and distinctively state basis and prove exemption.
- Rejected claim of double taxation, holding excise on importation of alkylate is different from tax on production of gasoline for domestic sale; explained reprocessing may cause imposition of tax twice but absent same subject matter element, double taxation not established.
CTA En Banc Motion for Reconsideration (February 18, 2021 Resolution) — Internal Division and Vote
- After reconsideration by some members, a subset of CTA En Banc members concluded:
- For refund claims premised on erroneous tax payment, the doctrine of strict interpretation in the imposition of taxes should apply (favoring taxpayer).
- Alkylate is produced by alkylation, not distillation, and Congress did not clearly and unambiguously impose tax on alkylate under Sec. 148(e), so alkylate not subject to excise tax.
- Testimony of Dr. Joey Ocon and letter from DOE supported that alkylate is not similar to regular gasoline and naphtha; some members viewed alkylate as excluded from excise tax.
- However, the CTA En Banc did not obtain the number of required affirmative votes to modify, reverse or set aside the assailed Decision; therefore petitioner’s Motion for Reconsideration was denied for lack of sufficient votes, and prior decisions stood affirmed.
Petition to the Supreme Court — Assignments of Error and Arguments
- Petitioner’s key contentions:
- The CTA En Banc misapplied the rule of strict construction of laws granting tax exemptions; petitioner’s claim is not based on exemption but on absence of law imposing excise tax on alkylate under Sec. 148(e).
- Alkylate is produced by alkylation, not distillation; therefore not within Sec. 148(e)’s "naphtha, regular gasoline and other similar products of distillation" wording.
- Taxing alkylate when the finished product gasoline is also taxed amounts to double taxation because alkylate is not imported for domestic sale or consumption but as blending component.
- Respondent’s counter-arguments:
- Sec. 148(e) does not distinguish primary or secondary products of distillation; items subject to excise tax need not be primary products only.
- CMC No. 164-2012 issued by Bureau of Customs in exercise of quasi-legislative function has force and effect of law; unless CMC 164-2012 is declared null and void, petitioner cannot claim tax illegal.
Supreme Court’s Ruling — Applicable Doctrines and Core Legal Reasoning
- Central legal principle applied: distinction between (a) strict construction against the taxpayer in tax exemption cases and (b) strict interpretation in the imposition of taxes when government exacts tax absent clear statutory basis.
- Where refund claim is based on erroneous payment or gov