EFFECTS OF GUARANTY BETWEEN THE DEBTOR AND THE GUARANTOR
Art. 2066. The guarantor who pays for a debtor must be indemnified by the latter.
The indemnity comprises:
(1) The total amount of the debt;
(2) The legal interests thereon from the time the payment was made known to the debtor, even though it did not earn interest for the creditor;
(3) The expenses incurred by the guarantor after having notified the debtor that payment had been demanded of him;
(4) Damages, if they are due. (1838a)
EXCEPTIONS TO THE RIGHT TO INDEMNITY AND/OR REIMBURSEMENT
1. Where the guaranty is constituted without the knowledge or against the will of the principal debtor, the guarantor can recover only insofar as the payment had been beneficial to the debtor
2. Payment by a third person who doesn’t intend to be reimbursed by the debtor is deemed to be a donation, which, however, requires the consent of the debtor. But the payment is in any case valid as to the creditor who has accepted it.
3. The right to demand reimbursement is subject to waiver.