Short answer. Only to the extent you benefited. Article 2160 limits a good-faith recipient's liability for the loss or impairment of a mistakenly paid, specific thing to the extent it actually benefited them. If you already sold it before the loss came up, you must return the price or assign the right to collect it.
What the law says
He who in good faith accepts an undue payment of a thing certain and determinate shall only be responsible for the impairment or loss of the same or its accessories and accessions insofar as he has thereby been benefited.
Civil Code, Article 2160 — Good-Faith Payee. Read the full provision →
What the law says
If he has alienated it, he shall return the price or assign the action to collect the sum.
Civil Code, Article 2160 — Good-Faith Payee. Read the full provision →
Your liability is capped at your actual benefit
Article 2160 gives a good-faith recipient real protection against the harshness of ordinary liability for loss. It states that he who in good faith accepts an undue payment of a thing certain and determinate shall only be responsible for the impairment or loss of the same or its accessories and accessions insofar as he has thereby been benefited. Because you accepted the mistaken payment in good faith, having no reason to know it was not really owed to you, you are not automatically on the hook for the full value of the thing that was later lost; your responsibility is measured only by whatever benefit you actually derived from it.
What counts as a benefit
This generally means that if the thing was simply lost, damaged, or destroyed through no advantage to you, such as an accident that gave you nothing, you owe little or nothing for that loss. But if you used the thing, its accessories, or what it produced in some way that benefited you before it was lost, your liability corresponds to that benefit, not to the full replacement value of the item. The article draws a deliberate line between profiting from someone else's mistaken payment and simply being an innocent, unlucky custodian of it.
If you already sold the mistakenly paid thing
A different rule applies if you disposed of the thing before this issue arose. The article continues: If he has alienated it, he shall return the price or assign the action to collect the sum. Rather than trying to value the loss of the thing itself, the law simply requires you to hand over what you received for it, or to transfer your right to collect that price from whoever bought it, so the person who mistakenly paid you can pursue that value directly.
Why good faith changes the outcome
This limited liability exists specifically because you acted in good faith. Someone who knowingly held onto a payment they understood was not truly theirs would ordinarily be held to a stricter standard of responsibility for what happens to the thing while in their possession. Your good faith is what earns you the benefit of this narrower, benefit-based measure of liability instead.
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.
- Titan-Ikeda Construction and Development Corp. vs. Primetown Property Group, Inc, G.R. No. 158768, February 12, 2008 — read the decision on LawPhil →