Navigating Unconscionable Interest Rates in Loan Agreements: A Guide for Borrowers

The Supreme Court has long protected borrowers from predatory lending practices, and its recent ruling in Philippine National Bank v. AIC Construction Corporation (G.R. No. 228904, October 13, 2021) reinforces this protection. The case clarifies when courts may step in to reduce interest rates that are determined unilaterally by a lender, even if the borrower initially agreed to the loan terms. For borrowers facing ballooning obligations, this decision offers important guidance on their rights under Philippine law.

The Facts of the Case

AIC Construction Corporation obtained an omnibus credit line from Philippine National Bank (PNB) in 1989. The loan agreement contained an interest provision stating that borrowers would pay interest "at the rate per annum which is determined by the Bank to be the Bank's prime rate plus applicable spread." The Bacani Spouses, as owners of AIC, guaranteed the loan and mortgaged their properties as security.

Over the years, the credit line increased. When the loan matured in 1998, the outstanding amount was P65 million—composed of P40 million in principal and P25 million in capitalized interest charges. Despite negotiations for restructuring and a proposed dacion en pago (payment by property transfer), the parties could not agree. PNB eventually demanded payment of over P140 million, foreclosed on the mortgaged properties, and sought a deficiency judgment of P157 million.

The Legal Issue

The central question was whether the interest rates imposed by PNB were unconscionable and whether courts could reduce them. PNB argued that the rates were valid because AIC voluntarily entered into the agreement and that the interest was based on a determinable standard—the bank's prime rate plus a spread.

The Principle of Mutuality of Contracts

The Supreme Court applied Article 1308 of the Civil Code, which provides that a contract's validity or compliance cannot be left to the will of one party. The Court explained that this principle of mutuality requires essential equality between contracting parties.

The Court found that PNB's interest provision violated this principle. The rate was determined solely by the bank's subjective criteria—such as its profitability, cost of money, and administrative costs—without considering the borrower's circumstances. The borrower had no say in the rate and was left with no choice but to accept whatever PNB imposed. This arrangement, the Court held, violated the Truth in Lending Act (Republic Act No. 3765), which requires creditors to fully disclose the true cost of credit.

Courts May Equitably Reduce Unconscionable Rates

The Court emphasized that even if a borrower voluntarily agrees to an interest rate, courts have the discretionary power to reduce it if it is later found iniquitous or unconscionable. The lifting of the Usury Law ceiling does not give lenders carte blanche to impose rates that would "enslave their borrowers or lead to a hemorrhaging of their assets."

In this case, the Court noted the alarming growth of AIC's obligation: from P65 million at maturity, to P92 million without additional availments, to over P140 million by 2001, and to P162 million at foreclosure. The Court affirmed the Court of Appeals' ruling imposing the legal rate of interest of 12% per annum and excluding the penalty charge from the amount secured by the mortgage.

Practical Takeaways

• Interest rates must be mutually agreed upon. A provision that lets the lender unilaterally set rates based on subjective criteria violates the mutuality of contracts principle and may be struck down.
• Voluntary agreement is not enough. Courts can reduce interest rates even if the borrower knowingly accepted them, if the rates are later found unconscionable.
• Lenders must disclose the true cost of credit. The Truth in Lending Act requires full disclosure of interest rates and charges before the loan is consummated.
• Borrowers should document everything. Keep records of all loan documents, statements, and communications to show how interest rates were imposed.
• Courts may impose the legal rate. When an interest provision is void, courts may apply the legal interest rate instead of the stipulated rate.

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