COA Audit Powers and Quantum Meruit: Lessons from Lotrim v. COA

The Supreme Court recently affirmed the Commission on Audit's (COA) authority to determine the exact amount due to a government contractor under the principle of quantum meruit, even when this results in a refund of overpaid public funds. In Lotrim Construction, Inc. v. Commission on Audit (G.R. No. 270295, April 29, 2026), the Court dismissed the contractor's petition on procedural and substantive grounds, reinforcing that public funds must be protected and that procedural rules remain strictly enforced.

The Dispute

In 2012, the Bureau of Customs (BOC) awarded a contract to Lotrim Construction, Inc. for the expansion of its Port of Davao Administration Building. The contract price was PHP 17,203,203.18. The BOC made an advance payment and a partial payment to Lotrim in 2013.

COA disallowed these payments, finding that the BOC had misappropriated funds allotted for Maintenance and Other Operating Expenses (MOOE) to finance the construction project, in violation of the Government Auditing Code of the Philippines (Presidential Decree No. 1445) and other budget laws.

After an inspection by COA's Technical and Information Technology Services (TechITS), COA determined that the actual work accomplished amounted to only PHP 6,347,826.73. Since the BOC had already paid more than this amount, COA ordered Lotrim to return the overpayment of PHP 408,859.16.

The Issue

The central question was whether COA gravely abused its discretion in holding Lotrim liable to refund the overpayment.

The Court's Ruling

The Court dismissed the petition for two reasons.

First, the petition was filed out of time. Under Rule 64 of the Rules of Court, a petition for certiorari must be filed within 30 days from notice of the decision. The petitioners received the COA Proper's Resolution denying their motion for reconsideration on August 31, 2023, but filed their petition only on October 2, 2023. The Court held that the belated filing triggered the doctrine of immutability of judgment — a decision that has become final may no longer be modified.

Second, even on the merits, the petition failed. The Court rejected the petitioners' claim that they were denied due process when COA TechITS conducted its inspection without prior notice. The essence of due process is the opportunity to be heard, and the records showed that the petitioners actively participated in the proceedings before COA, filed appeals, and had their arguments considered on the merits.

The Court also addressed the petitioners' belated claim that the dispute should have been referred to the Construction Industry Arbitration Commission (CIAC). While CIAC generally has jurisdiction over construction disputes, the Court held that the petitioners were estopped from raising this issue after actively participating in COA proceedings for nearly eight years.

Quantum Meruit and COA's Broad Powers

The Court emphasized that COA, as the guardian of public funds, has the constitutional authority to define the scope of its audit and examination. In resolving cases on appeal, COA is not limited to the grounds initially cited by a government auditor — it is duty-bound to make its own assessment of the merits of a disallowed disbursement.

On quantum meruit, the Court explained that this equitable principle — meaning "as much as he deserves" — protects contractors who rendered services to the government. However, it cannot be used to allow contractors to retain payments in excess of what is legally due. The principle cuts both ways: it obliges the government to pay for benefits received, but it also safeguards public funds by allowing recovery of overpayments.

The Court deferred to COA's expertise in determining the amount due, noting that administrative findings supported by substantial evidence are entitled to great respect and finality.

Practical Takeaways

• COA has broad audit powers. Government contractors should expect COA to independently assess the merits of a disallowed disbursement, even beyond the grounds initially cited by an auditor.
• Due process is not a technicality. Contractors have a right to be heard, but this does not require COA to give advance notice of its internal technical inspections.
• Quantum meruit is a two-way street. While it allows contractors to recover for work performed, it also requires them to return overpayments.
• Raise jurisdictional objections early. Failing to timely invoke CIAC jurisdiction while actively participating in COA proceedings can bar a later challenge.
• Strict compliance with procedural rules is essential. The 30-day period under Rule 64 is mandatory; belated filings can result in dismissal regardless of the merits.

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