Unconscionable Interest Rates: When 5% Monthly Loan Interest Is Void in the Philippines

The Supreme Court has ruled that a 5% monthly interest rate on a loan is unconscionable and void for being contrary to public policy — even when the borrower knowingly agreed to it. The ruling protects borrowers from predatory lending and clarifies what happens to a mortgage and foreclosure when the interest rate is struck down. This article explains the key rules from the 2019 case of Bulatao v. Estonactoc and what they mean for lenders and borrowers.

The Case: A P200,000 Loan at 5% Monthly Interest

Zenaida Estonactoc obtained a P200,000 loan from Atty. Leonard Florent O. Bulatao, secured by a real estate mortgage over her property. The agreement carried a 5% monthly interest rate. When she defaulted, the lender foreclosed on the mortgage. Estonactoc filed a complaint to annul the mortgage and stop the property sale.

The Regional Trial Court upheld the interest rate and the foreclosure. The Court of Appeals reversed, reducing the interest to 1% per month and nullifying the foreclosure sale. The lender appealed to the Supreme Court, arguing that the agreed rate should be enforced.

Why a Borrower's Consent Does Not Validate an Unconscionable Rate

The Supreme Court emphasized that the parties' willingness to enter into a contract with an unconscionable interest rate is irrelevant to its validity. Citing its earlier ruling in Castro v. Tan, the Court stated that imposing an unconscionable rate of interest on a money debt — even if knowingly and voluntarily assumed — is "immoral and unjust," tantamount to "repugnant spoliation and an iniquitous deprivation of property."

The Court also rejected the lender's argument that the rate should stand because the borrower was an educated businesswoman. Determining whether an interest rate is unconscionable requires a consideration of the parties' circumstances, not just the borrower's education or business acumen.

The Legal Interest Rate Applies When the Agreed Rate Is Void

When an agreed interest rate is declared void, the legal interest rate prescribed by the Bangko Sentral ng Pilipinas (BSP) applies as a substitute. This rate applies not only for the originally agreed interest period but for the entire duration the loan remains unpaid. The Court reasoned that a contract of loan always contemplates a period, negating any idea of an "open-ended" or indefinite contract.

Effect on Foreclosure: No Default, No Valid Foreclosure

The Court affirmed a consistent line of jurisprudence: the imposition of null and void interest rates affects the debtor's state of default. Because the interest payments were illegal and non-demandable, the principal loan obligation was not yet due. Since Estonactoc was not in default, the foreclosure of her property was improper and invalid.

The Court also applied the principle of integrity of payment under the Civil Code provision on delay. A demand for P540,000 that included the excessive interest could not be considered a valid demand for payment.

Co-Ownership and the Mortgage's Validity

The Court also addressed a co-ownership issue. Estonactoc was a co-owner of the mortgaged property. Citing Estoque v. Pajimula, the Court reiterated that a co-owner cannot sell or mortgage a specific portion of co-owned property without the consent of the other co-owners. However, the principle of estoppel bars the disposing co-owner from disavowing the transaction to the full extent of their undivided share.

Applying these rules, the Court clarified that the deed of mortgage was valid only with respect to Estonactoc's share in the property. The foreclosure proceedings were void, but Estonactoc was ordered to pay the principal amount of P200,000 with interest at the legal rate — 12% per annum from June 3, 2008 to June 30, 2013, and 6% per annum from July 1, 2013 until full payment.

Practical Takeaways

• A 5% monthly interest rate (60% per annum) is unconscionable and void, even if the borrower agreed to it.
• Courts look at the parties' circumstances, not just the borrower's education or business experience, in judging whether a rate is excessive.
• When an agreed rate is void, the BSP legal interest rate applies for the entire period the loan remains unpaid.
• An unconscionable interest rate can invalidate a foreclosure, because the borrower is not considered in default when the interest demanded is illegal.
• A co-owner can only mortgage their own undivided share, not a specific portion of co-owned property, without the other co-owners' consent.

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