The Supreme Court has reiterated the strict requirements for waiving the statute of limitations in tax assessments. In a dispute between the Bureau of Internal Revenue (BIR) and First Gas Power Corporation, the Court emphasized that waivers extending the period for tax assessments must adhere precisely to established guidelines. Failure to comply with these guidelines, particularly regarding the indication of the date of acceptance by the BIR, renders the waiver invalid, and any assessments made beyond the original prescriptive period are void. This ruling protects taxpayers from prolonged uncertainty and reinforces the importance of procedural regularity in tax enforcement.

Taxing Time: When Waivers of Prescription Fall Flat

This case revolves around deficiency tax assessments issued by the BIR against First Gas Power Corporation for the taxable years 2000 and 2001. The BIR alleged underreported income and disallowed expenses, leading to assessments for deficiency income tax and penalties. However, First Gas challenged these assessments, arguing that the period to assess the deficiency for the taxable year 2000 had already prescribed due to defects in the waivers intended to extend this period. Additionally, they contended that the assessments for the taxable year 2001 were invalid because they lacked a specific payment due date. The core legal question is whether the waivers of the defense of prescription were valid, and whether the assessments met the necessary requirements for validity.

The controversy began with a Letter of Authority issued by the BIR to examine First Gas’s books for the taxable years 2000 and 2001. Following this, the BIR issued Preliminary Assessment Notices (PANs) and later, Final Assessment Notices (FANs) and Formal Letters of Demand. Crucially, to extend the original three-year period for assessment, the BIR and First Gas executed three waivers. However, these waivers became the focal point of contention due to alleged defects in their execution.

Section 203 of the National Internal Revenue Code (NIRC) sets the standard limitation on tax assessment, stating:

SEC. 203. Period of Limitation Upon Assessment and Collection. – Except as provided in Section 222, internal revenue taxes shall be assessed within three (3) years after the last day prescribed by law for the filing of the return, and no proceeding in court without assessment for the collection of such taxes shall be begun after the expiration of such period: Provided, That in a case where a return is filed beyond the period prescribed by law, the three (3)-year period shall be counted from the day the return was filed. For purposes of this Section, a return filed before the last day prescribed by law for the filing thereof shall be considered as filed on such last day.

However, Section 222(b) of the NIRC provides an exception, allowing for the extension of this period through a written agreement, or waiver, between the Commissioner of Internal Revenue (CIR) and the taxpayer. The Court, citing its previous ruling in Commissioner of Internal Revenue v. Kudos Metal Corporation, reiterated the stringent requirements for a valid waiver:

1. The waiver must be in the proper form prescribed by RMO 20-90. The phrase “but not after ______ 19 ____”, which indicates the expiry date of the period agreed upon to assess/collect the tax after the regular three-year period of prescription, should be filled up.

2. The waiver must be signed by the taxpayer himself or his duly authorized representative. In the case of a corporation, the waiver must be signed by any of its responsible officials. In case the authority is delegated by the taxpayer to a representative, such delegation should be in writing and duly notarized.

3. The waiver should be duly notarized.

4. The CIR or the revenue official authorized by him must sign the waiver indicating that the BIR has accepted and agreed to the waiver. The date of such acceptance by the BIR should be indicated. However, before signing the waiver, the CIR or the revenue official authorized by him must make sure that the waiver is in the prescribed form, duly notarized, and executed by the taxpayer or his duly authorized representative.

5. Both the date of execution by the taxpayer and date of acceptance by the Bureau should be before the expiration of the period of prescription or before the lapse of the period agreed upon in case a subsequent agreement is executed.

6. The waiver must be executed in three copies, the original copy to be attached to the docket of the case, the second copy for the taxpayer and the third copy for the Office accepting the waiver. The fact of receipt by the taxpayer of his/her file copy must be indicated in the original copy to show that the taxpayer was notified of the acceptance of the BIR and the perfection of the agreement.

The absence of the date of acceptance by the BIR on the waivers was deemed a critical defect, rendering the waivers invalid. The Court emphasized that strict compliance with the requirements outlined in Revenue Memorandum Order (RMO) 20-90 and Revenue Delegation Authority Order (RDAO) 05-01 is mandatory. This stems from the understanding that a waiver is a bilateral agreement, requiring the explicit consent of both parties, and the date of acceptance is crucial to ascertain whether the agreement was perfected before the expiration of the original prescriptive period. This stringent approach ensures that taxpayers are duly protected from indefinite tax investigations.

The BIR argued that the absence of the acceptance date was a mere oversight and that the notarization date could be presumed as the acceptance date. However, the Court rejected this argument, clarifying that the date of notarization cannot substitute for the date of acceptance by the BIR, as these relate to distinct actions by different parties. The Court has consistently held that the absence of the acceptance date renders the waiver defective and incapable of extending the prescriptive period, as highlighted in Commissioner of Internal Revenue v. Standard Chartered Bank.

Furthermore, the BIR’s claim of estoppel against First Gas was dismissed. The Court reiterated that the doctrine of estoppel cannot validate an act prohibited by law or against public policy. The detailed procedures for executing waivers must be strictly followed, and the BIR cannot use estoppel to circumvent its own non-compliance. This reflects the principle that the burden of ensuring compliance with legal requirements rests primarily on the assessing authority.

Regarding the deficiency assessment for the taxable year 2001, the Court also upheld the CTA’s decision that the absence of a definite due date for payment invalidated the assessment. Citing Commissioner of Internal Revenue v. Fitness By Design, Inc., the Court emphasized that a valid assessment must contain a clear and unequivocal demand for payment, including a specific due date. Without this, the assessment lacks the necessary definiteness to hold the taxpayer liable. Therefore, the assessments for both taxable years were deemed invalid due to either prescription or lack of a definite payment due date.

FAQs

What was the key issue in this case?	The key issue was whether the deficiency tax assessments issued by the BIR against First Gas Power Corporation for the taxable years 2000 and 2001 were valid, considering the alleged defects in the waivers and the absence of a definite payment due date.
What is a waiver of the statute of limitations in tax law?	A waiver is a written agreement between the BIR and a taxpayer to extend the period within which the BIR can assess and collect taxes beyond the standard three-year period. It allows the BIR more time to investigate potential tax liabilities.
What are the key requirements for a valid waiver?	The waiver must be in the prescribed form, signed by the taxpayer or their authorized representative, duly notarized, and signed by the CIR or an authorized revenue official, indicating acceptance and the date of acceptance. All these actions must occur before the expiration of the original assessment period.
Why is the date of acceptance by the BIR so important?	The date of acceptance is crucial because it establishes whether the waiver was validly accepted before the expiration of the original three-year prescriptive period. Without this date, it is impossible to determine if the agreement was perfected in time.
Can the BIR claim estoppel if the taxpayer signed a defective waiver?	No, the BIR cannot rely on the doctrine of estoppel to validate a defective waiver. The BIR has a duty to ensure strict compliance with the requirements for executing waivers, and they cannot shift the blame to the taxpayer for their own non-compliance.
What happens if a tax assessment does not have a definite due date for payment?	If a tax assessment lacks a definite due date for payment, it is considered invalid. A valid assessment must contain a clear and unequivocal demand for payment, including a specific date by which the tax liability must be settled.
Can a taxpayer raise the issue of prescription for the first time on appeal?	Yes, even if prescription is not initially raised as a defense, the court is obligated to dismiss the claim if the pleadings or evidence on record demonstrate that the claim is barred by prescription. This is to protect taxpayers from prolonged investigations.
What is the effect of an invalid waiver on a tax assessment?	An invalid waiver means that the original three-year prescriptive period for assessment was not extended. If the BIR issues an assessment after this original period has expired, the assessment is void and unenforceable.

This case serves as a critical reminder to both taxpayers and the BIR of the importance of adhering to procedural requirements in tax assessments. The strict interpretation of waiver requirements protects taxpayers from indefinite exposure to tax liabilities and underscores the necessity for clear and definite tax assessments. Moving forward, both parties must ensure meticulous compliance with all procedural rules to avoid future disputes and uphold the integrity of the tax system.

For inquiries regarding the application of this ruling to specific circumstances, please contact ASG Law through contact or via email at frontdesk@asglawpartners.com.

Disclaimer: This analysis is provided for informational purposes only and does not constitute legal advice. For specific legal guidance tailored to your situation, please consult with a qualified attorney.
Source: REPUBLIC OF THE PHILIPPINES VS. FIRST GAS POWER CORPORATION, G.R. No. 214933, February 15, 2022