G.R. No. L-52478 October 30, 1986
THE GOVERNMENT SERVICE INSURANCE SYSTEM, petitioner-appellant, vs. HONORABLE COURT OF APPEALS, NEMENCIO R. MEDINA and JOSEFINA G. MEDINA, respondents-appellants.

FACTS

Spouses Nemencio and Josefina Medina obtained two loans from the Government Service Insurance System (GSIS). The first loan, for P350,000, was secured by a real estate mortgage executed on April 4, 1962, and amended on July 6, 1962. The second loan, for P230,000, was approved in 1963 and secured by the same properties. Both loans stipulated an interest rate of 9% per annum compounded monthly, with a penalty interest of 9% per annum on any due and unpaid amortizations. The Medinas defaulted on their payments. In 1975, GSIS applied for extra-judicial foreclosure. The properties were sold at public auction to GSIS as the highest bidder in January 1976.
The Medinas filed a complaint seeking to annul the mortgage contracts and the foreclosure, and to claim a refund for alleged overpayments. The trial court and the Court of Appeals ruled in favor of the Medinas, declaring the stipulated interest rates usurious and void, and ordering GSIS to make reimbursements. The appellate court also invalidated the foreclosure due to a clerical error in the Sheriff’s Certificate of Sale regarding the mortgage date. GSIS appealed to the Supreme Court.

ISSUE

The primary issue is whether the stipulated interest rates in the loan agreements are usurious and therefore void.

RULING

The Supreme Court reversed the Court of Appeals and upheld the validity of the interest stipulations and the foreclosure. The legal logic is anchored on the distinction between compensatory interest and penal interest. The Court held that the Usury Law (Act No. 2655) applies only to interest as compensation for the use or forbearance of money. The stipulated 9% per annum compounded monthly for the loans was within the legal rate at the time and was a valid compensatory interest.
Crucially, the additional 9% per annum interest imposed on overdue installments was characterized not as usurious interest but as a penalty clause, which is expressly permitted under Article 2209 of the Civil Code. This penal interest is a separate stipulation by way of damages for delay, distinct from the compensatory interest on the principal loan. Following precedents like Bachrach Motor Co. v. Espiritu and Equitable Banking Corporation v. Liwanag, the Court ruled that such penalty clauses are lawful. Since the Medinas defaulted, GSIS had a clear right to foreclose the mortgage. The clerical error in the Sheriff’s Certificate was deemed immaterial, as the certificate is merely provisional and does not affect the substantive validity of the foreclosure proceedings.