Do Supreme Court decisions become part of the law of the Philippines?

Interpretation becomes part of the law

Article 8 explains how court decisions fit into Philippine law: judicial decisions applying or interpreting the laws or the Constitution shall form a part of the legal system of the Philippines. The courts do not enact statutes; that is the legislature's role. But when the Supreme Court authoritatively interprets what a law or a constitutional provision means, that interpretation attaches to the provision and is read together with it. The statute supplies the words; the ruling supplies the settled meaning. From then on, to know the law you must know not just the text but how the highest court has construed it.

This is the doctrine of precedent

The article is the statutory root of what lawyers call stare decisis, the duty of courts to follow settled interpretations. Once the Supreme Court has laid down how a provision is to be understood, lower courts are expected to apply that reading to like cases, which is what gives the law consistency and lets people predict how disputes will be resolved. Only decisions of the Supreme Court set binding doctrine of this kind; the rulings of trial courts and even the Court of Appeals guide but do not bind in the same way. It is the interpretation by the court of last resort that becomes part of the legal system.

What this does and does not make judges

Saying decisions 'form part of' the law does not turn judges into legislators. A ruling interprets an existing law; it does not create a new one out of nothing, and a decision cannot stand against the clear text of the Constitution or a valid statute. The interpretation is also not frozen forever: the Supreme Court can reconsider and reverse its own doctrine, and when it does, the new interpretation governs. Because an interpretation merely declares what the law always meant, a change in doctrine can reach back in a way a new statute usually cannot. The court explains the law; it does not own it.

Why this matters when you read the law

For an ordinary person, the practical meaning is that the words of a statute are not the whole story. A provision can read one way on its face and be applied differently because the Supreme Court has construed a term, filled a gap, or reconciled it with another law. This is why a confident reading of a bare code article can mislead: the controlling meaning may live in a decision, not the text. When a right or duty turns on how a law is interpreted, it is worth checking whether the highest court has already spoken, because under Article 8 that interpretation is part of the law itself.

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.

• Bertini Cataluña Causing vs. People of the Philippines, G.R. No. 258524, April 8, 2026 — read the decision on LawPhil →
• Bernadette Lourdes B. Abejo vs. Commission on Audit, G.R. No. 272898, October 8, 2024 — read the decision on LawPhil →
• San Miguel Corporation vs. Commissioner of Internal Revenue/Commissioner of Internal Revenue vs. San Miguel Corporation, G.R. No. 257697, April 12, 2023 — read the decision on LawPhil →
• Kolin Electronics Co., Inc. vs. Kolin Philippines International, Inc, G.R. No. 228165, February 9, 2021 — read the decision on LawPhil →

Related provisions

• Civil Code, Article 8 — Judicial Decisions Form Part of the Law