Obligation that CANNOT be compensated

Compensation takes place when two persons, in their own right, are creditors and debtors of each other. However, there are obligations which cannot be compensated. These obligations are expressed in Articles 1287 and 1288 of the Civil Code, to wit:
ART. 1287. Compensation shall not be proper when one of the debts arises from a depositum or from the obligations of a depositary or of a bailee in commodatum.

Neither can compensation be set up against a creditor who has a claim for support due by gratuitous title, without prejudice to the provisions of paragraph 2 of Article 301. (1200a)

ART. 1288. Neither shall there be compensation if one of the debts consists in civil liability arising from a penal offense. (n)
The contract of depositum and commodatum cannot be compensated. Future support due by gratuitous title cannot also be compensated as stated in paragraph 2 of  Art. 1287. Furthermore, civil liability arising from a penal clause cannot be compensated. In Metropolitan v. Tonda, the Supreme Court held that if one of the debts consists in civil liability arising from a criminal offense, compensation would be improper and inadvisable because the satisfaction of such obligation is imperative.[1]

[1] Metropolitan Bank & Trust Company vs. Tonda, 338 SCRA 254 (2000).