Short answer. Yes, from the time you judicially demand it. Article 2212 provides that interest due shall earn legal interest from the time it is judicially demanded, even if the loan agreement is silent on the point. Filing your case is what starts that additional interest running on the unpaid interest itself.

What the law says

Interest due shall earn legal interest from the time it is judicially demanded, although the obligation may be silent upon this point.

Civil Code, Article 2212 — Compounding of Interest. Read the full provision →

Unpaid interest can itself start earning interest

Article 2212 addresses exactly the situation where interest itself has gone unpaid for a long time. Interest due shall earn legal interest from the time it is judicially demanded, although the obligation may be silent upon this point. The interest that has already accrued on your loan, once it becomes overdue, is treated as its own sum capable of earning further interest — but only starting from the moment you make a judicial demand for it, not automatically from whenever it first became due.

Silence in your loan agreement does not block this

A borrower might argue that because the loan contract never mentioned interest earning further interest, none should apply. Article 2212 rejects that argument directly: the rule applies although the obligation may be silent upon this point. You do not need a clause in your agreement authorizing interest on interest for this to take effect — the Civil Code supplies the rule regardless of what the contract does or does not say.

Judicial demand, specifically, is the trigger

The starting point the article specifies is judicial demand — filing the court case itself — not an earlier extrajudicial demand letter, and not the date the interest first accrued or became overdue. This is a narrower trigger than some other provisions in the Code use, so the timing of when you actually filed your case, rather than when you first asked the debtor to pay, is what determines when interest on the overdue interest begins to run.

What this means for your claim

If years of accrued interest remain unpaid, filing your court case does more than seek payment of the principal and that overdue interest — it also starts a separate clock under which the overdue interest itself begins earning legal interest going forward. This can meaningfully increase the total recovery the longer the case takes to resolve, since the additional interest runs from the filing date rather than only being calculated once judgment is finally rendered.

Cases citing this provision

These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.