Final Judgment Immutability: No Compound Interest Without Explicit Decree

The Supreme Court's ruling in Calilung v. Paramount Insurance Corporation (G.R. No. 195641, July 11, 2016) settles a question that often arises during execution of judgments: can a winning party collect compounded interest when the final decision only awarded simple interest? The Court answered no, reaffirming the doctrine of immutability of judgments.

The Facts

In 1987, Tarcisio Calilung invested P718,750.00 in RP Technical Services, Inc. (RPTSI). RPTSI issued a promissory note for that amount with 14% interest per annum, payable on or before April 9, 1988. Paramount Insurance Corporation guaranteed the note under a surety bond.

When RPTSI failed to pay, Calilung filed a collection suit. The Regional Trial Court (RTC) ruled in his favor, ordering RPTSI and Paramount to pay, jointly and severally, the principal of P718,750.00 with interest at 14% per annum from October 7, 1987 until fully paid, plus attorney's fees and costs. The Court of Appeals affirmed, and the Supreme Court denied review. The judgment became final and executory on July 19, 2005.

The Dispute During Execution

During execution, Calilung moved to collect compounded interest. He invoked Article 2212 of the Civil Code, which states that interest due shall earn legal interest from the time it is judicially demanded.

The RTC flip-flopped three times. First, it denied compounding. Then it allowed it, citing Eastern Shipping Lines v. Court of Appeals. Finally, it reverted to denying compounding, holding that the final judgment did not decree it.

The Issue

Whether the winning party may recover compounded interest under Article 2212 of the Civil Code when the final and executory judgment awarded only simple interest at 14% per annum.

The Ruling

The Supreme Court denied Calilung's petition and affirmed the RTC's final position: only simple interest at 14% per annum could be collected.

The Court explained that a final and executory judgment is immutable. It can no longer be modified or disturbed, grounded on public policy that litigation must end at some definite time. Once a judgment attains finality, execution must conform to, and not vary from, the decree.

The Court distinguished between monetary interest (compensation fixed by the parties for the use or forbearance of money) and compensatory interest (imposed by law or courts as penalty or indemnity for damages). Article 2212 allows interest on interest only as compensatory interest. But here, the judgment expressly awarded only 14% simple interest on the principal. Nothing in the dispositive portion decreed compounding.

Applying Article 2212 would effectively modify the final judgment, which no court could do. The execution must follow the decree as written.

Practical Takeaways

• A final judgment is sacred. Once executory, courts cannot add obligations not stated in the dispositive portion, even if a law like Article 2212 might otherwise support them.
• Read the dispositive portion carefully. If a decision states "interest at X% per annum" without saying "compounded" or "interest on interest," it means simple interest only.
• Compounding must be expressly decreed. Article 2212 of the Civil Code allows interest on interest, but only when the judgment itself includes such an award.
• Execution is ministerial. The court issuing the writ cannot interpret the judgment to expand or alter it; it must enforce the decree as written.
• For creditors, clarity matters. To protect the right to compounded interest, the judgment must explicitly state it—relying on legal provisions after finality will not suffice.

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