Short answer. Yes. Article 18 of the Civil Code establishes the Code as suppletory law: where the Code of Commerce or a special law does not address a situation, the Civil Code fills the gap. This applies insofar as the Civil Code's provisions are not inconsistent with the special law that governs the main subject.
What the law says
In matters which are governed by the Code of Commerce and special laws, their deficiency shall be supplied by the provisions of this Code.
Civil Code, Article 18 — Civil Code as Suppletory Law. Read the full provision →
What suppletory application means
When a special law or the Code of Commerce governs a particular matter, those laws take priority over the Civil Code. But no statute can anticipate every situation. Article 18 of the Civil Code steps in as the default backstop: whenever the applicable special law or commercial code is silent on a point, the Civil Code fills the void. This is called suppletory application — the Civil Code supplies what the primary law lacks, rather than replacing it.
The consistency requirement
Suppletory application is not automatic in every case. The Civil Code provision that fills the gap must not conflict with the spirit or the specific rules of the primary law. If a special law deliberately excludes a Civil Code rule — or if applying the Civil Code provision would frustrate the purpose of the special statute — the Civil Code does not apply. Courts look at whether the Civil Code rule is consistent with the special law's framework, not just whether it is technically silent.
Practical examples
This comes up often in commercial and labour disputes. An insurance contract dispute where the Insurance Code does not address a specific point may be resolved by the Civil Code's general rules on contracts. A corporation's internal arrangement not covered by the Revised Corporation Code may fall back on Civil Code principles of agency or obligation. In banking and finance, where a transaction falls outside the specific coverage of banking regulations, Civil Code provisions on loans, interest, or quasi-contracts may govern. The rule prevents legal gaps from leaving parties without remedy.
When the Civil Code does not apply
Article 18 does not apply when the special law has expressly excluded Civil Code coverage, or when the structure of the special law makes it clear that Civil Code rules would be inappropriate. Labour law, for example, has its own elaborate remedial scheme; importing Civil Code damages rules into a pure labour dispute may be resisted on the ground that the Labor Code is a self-contained regime. The boundary is not always obvious, and courts apply the suppletory rule with discretion rather than mechanically.
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.
- Princess Rachel Development Corporation and Boracay Enclave Corporation vs. Hillview Marketing Corporation, Stefanie Dornau, G.R. No. 222482, June 2, 2020 — read the decision on LawPhil →
- Agustin P. Dela Torre vs. The Hon. Court of Appeals, et al./Philippine Trigon Shipyard Corporation, et al. vs. Crisostomo G. Concepcion, et al, G.R. No. 160088 / G.R. No. 160565, July 13, 2011 — read the decision on LawPhil →
- PCI Leasing & Finance InC. vs. Giraffe-X Creative Imaging, Inc, G.R. No. 142618, July 12, 2007 — read the decision on LawPhil →
- Manuel G. Abello, et al. vs. Commissioner of Internal Revenue, et al, G.R. No. 120721, February 23, 2005 — read the decision on LawPhil →