I paid our whole solidary debt, but one co-debtor is insolvent and can't repay his share - do I absorb that loss alone or do the others chip in?

Paying the whole debt gives you a right to reimbursement

In a solidary obligation, the creditor may collect the entire debt from any one debtor, and payment made by one of the solidary debtors extinguishes the obligation for everyone. But settling the whole amount does not make it your loss. The article gives the payer a right to turn to the others: he who made the payment may claim from his co-debtors only the share which corresponds to each, with the interest for the payment already made. So while you faced the creditor for everything, among yourselves each co-debtor owes only his own portion. You step into the creditor's shoes to that extent and can demand each one's share back, plus interest on what you advanced.

The insolvent co-debtor's share is shared out

Now the specific problem: one co-debtor is broke and cannot pay you his portion. Article 1217 answers this directly. Such share shall be borne by all his co-debtors, in proportion to the debt of each. The word "all" includes you — the loss from the insolvency is not thrown entirely onto the person who happened to pay the creditor, but neither does it fall on the solvent co-debtors alone. Everyone who was liable, including you, absorbs a piece of the missing share, and the pieces are sized in proportion to the debt of each. So a co-debtor responsible for a larger portion of the original obligation shoulders a larger part of the shortfall.

How the proportion works

The proportional rule keeps the sharing fair. Suppose several of you were solidary debtors in equal shares and one becomes insolvent: his unpaid share is divided among the remaining debtors, you included, according to your respective shares — which, if equal, means an equal slice of the shortfall each. Where shares were unequal, the split follows those unequal proportions. The point is that insolvency of one does not enrich the others or single out the payer for punishment; it redistributes the gap across the group by the same yardstick that measured each person's original liability. Interest already advanced on the paid obligation follows the same reimbursement logic among the co-debtors.

What this does not cover

Article 1217 governs the relationship among co-debtors after one of them pays; it assumes the obligation was genuinely solidary, not merely joint, since a joint debtor is liable only for his own share to begin with. It also does not decide how you prove a co-debtor's insolvency, nor does it guarantee actual collection — a right to be reimbursed is only as good as the co-debtors' ability to pay. If your co-debtors dispute their shares, contest whether the debt was solidary at all, or are themselves short of funds, it is worth having the loan documents and figures reviewed before you decide how to pursue them.

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.

• Benigno M. Vigilla, Alfonso M. Bognot, et al. vs. Philippine College of Criminology, Inc. and/or Gregory Alan F. Bautista, G.R. No. 200094, June 10, 2013 — read the decision on LawPhil →
• Gloria Paje, Lolita Gomez, Miriam Catacutan, Estrella Zapata, Gloria Sumang, Juanita Julieta Dingal, Myra Amante, and Fe S. Bernardo vs. Spic N' Span Service Corporation, G.R. No. 240810, February 28, 2022 — read the decision on LawPhil →
• Republic Glass Corporation, et al. vs. Lawrence C. Qua, G.R. No. 144413, July 30, 2004 — read the decision on LawPhil →
• Rafael M. Crisol, Jr. vs. Commission on Audit, G.R. No. 235764, September 14, 2021 — read the decision on LawPhil →

Related provisions

• Civil Code, Article 1217 — Payment by a Solidary Debtor; Reimbursement