Commissioner of Internal Revenue vs. Menguito

The separate corporate personality of a business may be disregarded for tax purposes and treated as one taxable entity with an individual’s sole proprietorship where substantial evidence demonstrates common ownership, management, and use of the corporate form to evade internal revenue laws. Additionally, a formal assessment under Section 228 of the National Internal Revenue Code is valid upon actual receipt by the taxpayer, and the failure to prove service of post-reporting or pre-assessment notices under Revenue Regulation No. 12-85 does not affect its validity, as such notices are not substantive prerequisites to tax collection.

For taxable years 1991, 1992, and 1993, Dominador Menguito engaged in the restaurant and cafeteria business as a sole proprietor under the trade name Copper Kettle Cafeteria Specialist (CKCS). His principal place of business was at the Gloriamaris, CCP Complex, Pasay City, later transferred to the Ninoy Aquino International Airport. During the same period, he also operated a branch at Club John Hay, Baguio City, using the same business name. The Bureau of Internal Revenue received information of undeclared income from transactions with Texas Instruments and Club John Hay, prompting an investigation that led to the issuance of assessment notices for deficiency income and percentage taxes.

• Nature of the Business: Respondent Dominador Menguito, married to Jeanne Menguito, was a sole proprietor engaged in the restaurant/cafeteria business under the trade name Copper Kettle Cafeteria Specialist (CKCS). For 1991, 1992, and 1993, he operated outlets at the CCP Complex, NAIA Departure Area, and a branch at Club John Hay, Baguio City.
• Investigation and Initial Assessment: The BIR Regional Office in Baguio City received information that respondent had undeclared income from Texas Instruments and Club John Hay. A letter dated July 28, 1997 informed the spouses Menguito of underdeclared sales totaling ₱48,721,555.96. This was followed by a Preliminary Ten-Day Letter dated August 11, 1997, informing respondent of a deficiency income and percentage tax liability of ₱34,193,041.55. Formal assessment notices were issued on September 2, 1997.
• Administrative Protest: Jeanne Menguito, in a letter dated September 28, 1997, protested the assessment notices on the ground that the 40% deduction allowed on computed gross revenue was unrealistic. She referred to “our businesses at 19th Tee, Club John Hay and at Texas Instruments” and requested thirty days to coordinate with the BIR. The BIR replied on October 10, 1997, stating the assessment was based on third-party data, not disallowed expenses, and gave the spouses ten days to present evidence.
• Response and Evidence of Corporate Identity: In an effort to clarify that the contracts with Texas Instruments and Club John Hay were with Copper Kettle Catering Services, Inc. (CKCS, Inc.), a corporation, and not with his sole proprietorship, respondent submitted a photocopy of the SEC Registration of CKCS, Inc. on March 23, 1999. On April 12, 1999, the BIR Baguio informed respondent that reinvestigation could not be given due course based on an uncertified photocopy, and that the assessment remained valid and enforceable.
• CTA Petition and Trial: Respondent filed his petition with the CTA on May 26, 1999, raising prescription, procedural due process violations (failure to issue proper pre-assessment notices, erroneous address), and duplication of audit. He denied underdeclaring sales, asserting the revenues belonged to CKCS, Inc. At trial, the CTA received evidence including: the Joint Stipulation where respondent admitted CKCS was his business name; Exhibit “1,” a July 18, 1994 letter where Jeanne Menguito signed as proprietor of CKCS and referred to “my income, business, and withholding taxes”; Exhibits “A” through “C,” lists of Club John Hay concessionaires for 1991-1993, showing “19th TEE CAFETERIA (Copper Kettle, Inc.)” as the outlet; a Club John Hay Certification identifying “COPPER KETTLE CATERING SERVICES owned and managed by MS. JEANNE G. MENGUITO” as the concessionaire of the 19th Tee Cafeteria and Tee Bar; Texas Instruments documents referring to the canteen operator as both “Copper Kettle Catering Services, Inc.” and “COPPER KETTLE CAFETERIA SPECIALIST SVCS.”; and Quarterly Percentage Tax Returns for “19th Tee Camp John Hay” filed under the name “Copper Kettle Cafeteria Specialist.” Respondent’s witness, Ma. Theresa Nalda, testified she informed the BIR that respondent did not receive pre-assessment notices, but she was employed only in June 1998, after the notices were sent in 1997.
• CTA Findings: The CTA found that CKCS and CKCS, Inc. were one and the same business, the corporate form having been used to evade taxes. It ruled the assessment was timely under the 10-year prescriptive period for fraud, the assessment notices were validly sent to the address in the tax returns, and respondent was estopped from raising procedural objections not included in the September 28, 1997 protest.
• CA Reversal: On appeal, the CA held that CKCS, Inc. was a distinct entity from CKCS, as shown by the certifications naming Jeanne Menguito as owner/manager, and that respondent could not be assessed for the corporation’s income. It also ruled the assessment invalid because the Commissioner failed to prove that the pre-assessment and post-reporting notices were actually received by respondent.

• Identity as One Taxable Entity: Petitioner maintained that CKCS and CKCS, Inc. were the same. The September 28, 1997 protest letter from Jeanne Menguito referred to “our businesses” at both Club John Hay and Texas Instruments, confirming common ownership. Respondent failed to produce certified original articles of incorporation; the uncertified photocopy attached only to his CA reply was not formally offered before the CTA. The separate corporate existence was a sham used to evade payment of correct taxes, which the CTA properly disregarded.
• Prescription and Procedural Compliance: Petitioner argued the assessment was not prescribed. Fraud was discovered on August 5, 1997, and the assessments were issued on September 2, 1997, well within the 10-year period under Section 223 of the Tax Code. Respondent waived the right to consolidate investigations in a July 18, 1994 letter. The July 28 and August 11, 1997 letters satisfied the pre-assessment notice requirements of Revenue Regulation No. 12-85, and respondent’s acknowledgment of receipt in his protest rendered the address issue moot.

• Separate Taxable Persons: Respondent asserted that Copper Kettle Catering Services, Inc. (CKCS, Inc.) was a corporation separate and distinct from his sole proprietorship, Copper Kettle Cafeteria Specialist (CKCS). Previous BIR audit teams had treated them separately, and respondent paid the resulting deficiency taxes. Certifications from Club John Hay and Texas Instruments identified CKCS, Inc., owned and managed by Jeanne Menguito, as the contracting party; thus, the underdeclared sales and tax liabilities belonged to the corporation, not to him.
• Invalidity of Assessments for Due Process Violations: Respondent contended the assessment notices were issued beyond the three-year prescriptive period under Section 203, were addressed to the Club John Hay branch despite his principal business address in Pasay City not being properly notified of a change, and were issued without the post-reporting and pre-assessment notices required under Revenue Regulation No. 12-85. The denial of receipt of the preliminary notices by his witness, coupled with the BIR’s failure to produce registry receipts or other proof of mailing, deprived him of due process.

• Identity of Taxable Entities: Whether the Court of Appeals erred in reversing the CTA’s finding that Copper Kettle Catering Services, Inc. and Copper Kettle Cafeteria Specialist were the same taxable entity for purposes of the deficiency tax assessments for 1991, 1992, and 1993.
• Validity of the Formal Assessment: Whether the deficiency tax assessments were invalid due to the Commissioner’s failure to prove that the post-reporting and pre-assessment notices required under Revenue Regulation No. 12-85 were actually served on and received by the taxpayer, where the formal assessment notice was concededly received and protested.

• Identity of Taxable Entities: The CA’s reversal constituted grave error; the CTA’s finding of a single taxable entity was supported by overwhelming evidence. Respondent admitted in his petition and the Joint Stipulation that he operated a branch at Club John Hay under the name Copper Kettle Cafeteria Specialist. Exhibits “A” through “C” listed the outlet as “19th TEE CAFETERIA (Copper Kettle, Inc.),” which could only refer to respondent’s admitted branch. The Club John Hay Certification and Texas Instruments letters showed the interchangeable use of “Copper Kettle Catering Services” and “Copper Kettle Cafeteria Specialist SVCS,” while tax returns were filed under “Copper Kettle Cafeteria Specialist.” Jeanne Menguito’s September 28, 1997 protest letter referred to “our businesses,” and her July 18, 1994 letter referred to the same business as “my” income, evidencing common ownership and management by the spouses. The late-filed articles of incorporation could not overcome this. Pursuant to the doctrine in Commissioner of Internal Revenue v. Norton and Harrison Company, the corporate veil was properly pierced, and both entities treated as one taxable person.
• Validity of the Formal Assessment: The failure to prove service of pre-assessment notices did not invalidate the assessments. A formal assessment under Section 228 of the Tax Code is the substantive prerequisite to tax collection: it contains a computation of tax liabilities and a demand for payment, initiating the accrual of penalties and interest, and enabling the taxpayer to determine remedies. It must be served on and received by the taxpayer to satisfy due process. Here, respondent expressly acknowledged receiving the September 2, 1997 assessment notices in his petition and his September 28, 1997 protest letter; he is estopped from denying receipt. The post-reporting notice under Section 1 and the pre-assessment notice under Section 2 of Revenue Regulation No. 12-85 are merely informal, preliminary notices that hint at initial findings and invite an informal conference; they do not declare a final liability or demand payment. Their absence, therefore, inflicts no prejudice where, as here, the taxpayer actually received the formal assessment, protested it, and sought judicial review.

• Piercing the Corporate Veil in Taxation: When a corporation is shown to be merely an adjunct, business conduit, or alter ego of another person or entity, and maintaining separate juridical personalities would sanction fraud on internal revenue laws, the fiction of distinct corporate identity shall be disregarded and both treated as one taxable person. Evidence that the owner directs and controls operations or that payments and accounts of one are attributed to the other constitutes substantial proof of a single taxable personality. The doctrine applies equally to arrangements between a corporation and an individual’s sole proprietorship. (Applied to CKCS, Inc. and respondent’s CKCS based on common ownership by the spouses, interchangeable business names in official documents, tax returns filed under the sole proprietorship’s name for corporate-licensed outlets, and admission of joint operation of “our businesses.”)
• Substantive Character of the Formal Assessment: The issuance and service of a formal assessment under Section 228 of the National Internal Revenue Code is a substantive prerequisite to tax collection. It constitutes the definitive computation of tax liability and the demand for payment, thereby starting the accrual of delinquency interest and penalties and informing the taxpayer of available remedies. Due process mandates that it be served on and received by the taxpayer. Post-reporting and pre-assessment notices under Revenue Regulation No. 12-85, by contrast, are not substantive requisites; they are informal, preliminary communications that do not contain a final declaration of liability or a demand for payment. Non-compliance with these procedural notice requirements does not vitiate a formal assessment that has been actually received and contested by the taxpayer.

• "The stringent requirement that an assessment notice be satisfactorily proven to have been issued and released or, if receipt thereof is denied, that said assessment notice have been served on the taxpayer, applies only to formal assessments prescribed under Section 228 of the National Internal Revenue Code, but not to post-reporting notices or pre-assessment notices. The issuance of a valid formal assessment is a substantive prerequisite to tax collection, for it contains not only a computation of tax liabilities but also a demand for payment within a prescribed period, thereby signaling the time when penalties and interests begin to accrue against the taxpayer and enabling the latter to determine his remedies therefor." — This passage distinguishes the legal weight of a formal assessment from that of preliminary notices and forms the ratio for upholding the assessment despite the lack of proof of pre-assessment service.
• "A post-reporting notice and pre-assessment notice do not bear the gravity of a formal assessment notice. The post-reporting notice and pre-assessment notice merely hint at the initial findings of the BIR against a taxpayer and invites the latter to an 'informal' conference or clarificatory meeting. Neither notice contains a declaration of the tax liability of the taxpayer or a demand for payment thereof. Hence, the lack of such notices inflicts no prejudice on the taxpayer for as long as the latter is properly served a formal assessment notice." — This defines the limited, non-substantive function of the Revenue Regulation No. 12-85 notices and explains why their absence did not prejudice respondent.

• Commissioner of Internal Revenue v. Norton and Harrison Company, No. L-17618, August 31, 1964, 11 SCRA 714: Controlling precedent. Cited for the rule that where a corporation is an adjunct or business conduit of another and fraud on internal revenue laws is practiced, the separate corporate identity shall be disregarded, and both entities treated as one taxable person.
• Liddell & Co., Inc. v. Commissioner of Internal Revenue, 112 Phil. 524 (1961): Followed. Recognized as authority that the sale of properties of one entity to the other, with immediate public resale, indicates a single juridical taxable personality.
• Commissioner of Internal Revenue v. Toda, G.R. No. 147188, September 14, 2004, 438 SCRA 290: Followed. Referred to as a recent application of the alter ego doctrine where corporate fiction was used to evade taxes.
• Commissioner of Internal Revenue v. Reyes, G.R. No. 159694, January 27, 2006, 480 SCRA 382: Cited to emphasize that a valid formal assessment is a substantive prerequisite to tax collection, and because a valid formal assessment had been issued, collection was proper.
• Diez Vda. de Gabriel v. Commissioner of Internal Revenue, 465 Phil. 986 (2004): Cited for the rule that assessment notices must be proven to have been served on the taxpayer. Distinguished as applying to formal assessments, not to preliminary notices.

• Section 228, National Internal Revenue Code (as in effect): Applied as the source of the rule that a formal assessment is a substantive prerequisite to tax collection. Its requirements of computation, demand, and service formed the basis for distinguishing formal assessments from the preliminary notices under Revenue Regulation No. 12-85. Receipt of the formal assessment by respondent satisfied due process.
• Section 223, National Internal Revenue Code (10-year prescriptive period for fraud): Implicitly affirmed by the Court; the CTA had applied this provision in ruling that the September 2, 1997 assessments were timely because the falsity in respondent’s returns was discovered on February 19, 1997. The issue of prescription was not disturbed.
• Sections 1 and 2, Revenue Regulation No. 12-85 (Post-Reporting Notice and Notice of Proposed Assessment): Construed as creating informal, procedural steps that do not constitute substantive prerequisites to a valid assessment. Non-observance does not vitiate a formal assessment where the taxpayer actually received the latter. Section 1 requires a post-reporting notice with a summary of findings and an invitation to an informal conference. Section 2 requires a written notice of proposed assessment sent to the address in the return or last known address.

Associate Justice Consuelo Ynares-Santiago (Chairperson), Associate Justice Minita V. Chico-Nazario, Associate Justice Antonio Eduardo B. Nachura, Associate Justice Ruben T. Reyes. No separate concurring opinions were issued.