Short answer. When you pay without specifying which debt it covers, and the application cannot be worked out from the preceding rules or the circumstances, Article 1254 of the Civil Code applies your payment to the debt that is most onerous to you. If the debts are equally burdensome, the payment is applied proportionately to all of them.
What the law says
the debt which is most onerous to the debtor, among those due, shall be deemed to have been satisfied. If the debts due are of the same nature and burden, the payment shall be applied to all of them proportionately.
Civil Code, Article 1254 — Application by Operation of Law. Read the full provision →
This rule is a last resort
Article 1254 does not kick in the moment you fail to name a debt. The Civil Code's rules on application of payments first look at whether you designated a debt when you paid, and failing that, whether the application can be inferred from the circumstances surrounding the payment. Only when neither of those paths works, meaning no designation and nothing in the circumstances points to an answer, does the law step in with a default rule and decide the question for you and your lender.
"Most onerous" is the default
Where the default rule applies, the law does not divide the payment evenly among your debts by default. Instead, it treats the debt that is most onerous to you, the debtor, as the one satisfied. An onerous debt is generally one that burdens you more heavily, for example because it carries interest while another does not, because it is already due while another is not, or because it is secured in a way that makes non-payment costlier for you. The law resolves the ambiguity in the way that benefits the debtor most, rather than leaving the lender to decide after the fact.
When debts are equally burdensome
If your several debts to the same lender are of the same nature and carry the same burden, so that none can fairly be called more onerous than another, Article 1254 does not force a choice between them. Instead, it applies the payment proportionately across all of them. Each debt is treated as partially reduced in proportion to its share of the total owed, rather than one debt being wiped out while the others remain untouched.
Why this matters in practice
Which debt gets credited first can matter a great deal, particularly if one debt is interest-bearing, secured, or close to prescribing. If you want a specific debt paid off, the safest course is to say so clearly at the time you pay, ideally in writing, since Article 1254 only comes into play once that designation is missing and the circumstances offer no clue. Keeping records of what you intended, and any acknowledgment from your lender, avoids leaving the outcome to this default rule.
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.
- Premiere Development Bank vs. Spouses Engracio T. Castañeda, G.R. No. 185110, August 19, 2024 — read the decision on LawPhil →
- Estanislao and Africa Sinamban vs China Banking Corporation, G.R. No. 193890, March 11, 2015 — read the decision on LawPhil →
- New Sampaguita Builders Construction, Inc., et al. vs. Philippine National Bank, G.R. No. 148753, July 30, 2004 — read the decision on LawPhil →