I. Introduction

This memorandum provides an exhaustive analysis of the Philippine rule governing succession with respect to the national law of the deceased. The core principle is that succession, as a matter of substantive law, is governed by the national law of the decedent. This rule applies to both testate and intestate succession, encompassing the order of succession, the amount of successional rights, the intrinsic validity of testamentary provisions, and the capacity to succeed. This memo will trace the rule’s statutory basis, doctrinal foundations, jurisprudential applications, exceptions, and procedural implications within the Philippine legal system.

II. Statutory Foundation: The Civil Code and the Code of Civil Procedure

The governing law is Article 16(2) of the Civil Code of the Philippines, which states: “Intestate and testamentary successions shall be governed by the national law of the person whose succession is under consideration, whatever may be the nature of the property and regardless of the country wherein said property may be found.” This provision is a specific application of the general conflict-of-laws rule found in Article 16(1), which mandates that “real property as well as personal property is subject to the law of the country where it is situated.” However, paragraph 2 creates an exception for succession, establishing a personal law principle.
Historically, this rule was also enshrined in Section 630 of the old Code of Civil Procedure (Act No. 190), which used the term “law of the state” of the decedent’s domicile. The shift from “domicile” to “national law” in the Civil Code marked a deliberate adoption of the nationality theory in Philippine conflict of laws.

III. Doctrinal Rationale: Nationality Theory and the Unity of Succession

The rule is underpinned by the nationality theory, a system of conflict of laws where an individual’s personal rights and status are governed by the law of their nationality. This contrasts with the domiciliary theory used in common law jurisdictions. The rationale is that succession is a mode of transferring a person’s entire estate, rights, and obligations upon death, which is intimately connected to their personal status and familial relations, matters traditionally governed by their national law. It promotes the unity of succession, meaning the entire estate of the decedent, whether consisting of real or personal property and regardless of its location, is governed by a single legal system—the decedent’s national law. This avoids the complications of scission, where different properties are governed by different laws based on their situs.

IV. Scope and Application of the National Law

The national law of the deceased governs the following key aspects of succession:
a. Capacity to succeed: This includes the decedent’s capacity to make a will (active testamentary capacity) and the heir’s or legatee’s capacity to inherit (passive testamentary capacity or capacity to succeed), subject to the prohibitions in Article 1039 of the Civil Code.
b. Order of intestate succession: The rules determining who are the compulsory heirs, legitimate heirs, illegitimate heirs, and their respective shares in the absence of a valid will.
c. Amount of successional rights: The determination of the legitime of compulsory heirs and the disposable free portion.
d. Intrinsic validity of testamentary provisions: Whether the provisions in a will concerning the distribution of the estate are valid, particularly with respect to the protection of compulsory heirs.
e. Validity of the will as to its form: While the intrinsic validity is governed by national law, the formal or extrinsic validity (i.e., the form and solemnities of the will) is governed by a separate rule under Article 17(3) of the Civil Code (law of the country in which it is made, or the national law of the testator, etc.).
f. Right of representation: The applicability and extent of the right of representation among heirs.
g. Causes for disinheritance and the effects thereof.

V. Determination of the “National Law”

For a Filipino citizen, the national law is Philippine law. For an alien, the national law refers to the law of the country of which the decedent was a citizen at the time of death. Complications arise in cases of dual citizenship or stateless persons. In dual citizenship, Philippine jurisprudence generally applies Philippine law if one of the citizenships is Filipino. For a stateless person, the likely fallback, by analogy to Article 50 of the Civil Code and general conflict-of-laws principles, would be the law of the domicile.

VI. Exceptions and Limitations

The application of the national law of the deceased is not absolute. Key exceptions include:
a. Prohibited Degrees of Relationship (Article 1039, Civil Code): Regardless of the national law, a foreign heir is not entitled to succeed if they are not within the fifth degree of relationship to the decedent, or if they are a disqualified heir under Article 1027 of the Civil Code. Conversely, a Filipino heir within the fifth degree can succeed to the estate of an alien decedent.
b. Public Policy (Article 17, Civil Code): “Prohibitive laws concerning persons, their acts or property, and those which have for their object public order, public policy and good customs shall not be rendered ineffective by laws or judgments of a foreign country, or by foreign wills.” A foreign succession law that is utterly repugnant to fundamental Philippine public policy (e.g., a law that completely disregards the rights of illegitimate children in a manner violating the Constitution) may be disregarded on this ground, though this is applied restrictively.
c. Renvoi Doctrine: The Philippine Supreme Court has not definitively ruled on whether the renvoi doctrine applies in succession cases. The doctrine would arise if the national law of the foreign decedent (e.g., a state in the USA that uses the domiciliary theory) refers back (renvoi) to Philippine law as the law of the situs of the property. The prevailing scholarly view is that Article 16(2) refers to the internal law of the foreign state, not its conflict-of-laws rules, thus rejecting renvoi.
d. Escheat: In cases where no eligible heir claims the estate under the applicable national law, the property may escheat to the Philippine state under the rules on escheat.

VII. Comparative Analysis: Nationality vs. Domiciliary Theory

The Philippine rule is characteristic of civil law systems, contrasting sharply with the approach of common law jurisdictions.

VIII. Procedural Implications and Proof of Foreign Law

In judicial proceedings, such as testate or intestate proceedings before Philippine courts, the party invoking the application of a foreign national law has the burden of pleading and proving it. Foreign law is treated as a question of fact that must be alleged and proved by evidence, such as authenticated copies of the foreign statute, expert testimony, or official publications. If the foreign law is not properly pleaded and proved, Philippine courts will presume it to be the same as Philippine law (processual presumption). The procedural aspects of the settlement and distribution of the estate, however, are governed by Philippine law as the lex fori.

IX. Relevant Jurisprudence

The Supreme Court has consistently upheld Article 16(2). Key cases include:
Bellis v. Bellis (1966): The landmark case where the Court applied Texas law to the succession of a U.S. citizen domiciled in Texas, ruling that the intrinsic validity of his will (including the disinheritance of his illegitimate children) was governed by his national law. The Court strictly applied the nationality theory*.
Miciano v. Brimo (1924): The Court refused to give effect to a provision in a will of a Turkish decedent that directed the distribution of his estate according to Philippine law, holding that the national law of the decedent governs succession. The clause was deemed a prohibited substitution* of law.
In re: Estate of Johnson (1960): Applied California law to the intestate succession* of a U.S. citizen, emphasizing the rule in Article 16(2).
Republic v. Orbecido III* (2005): While primarily on family law, it touches on the implications of citizenship status on personal laws, reinforcing the centrality of nationality.

X. Conclusion

The Philippine rule on succession is firmly anchored on the nationality theory, mandating that the national law of the deceased governs all substantive aspects of intestate and testamentary succession. This rule, codified in Article 16(2) of the Civil Code, ensures the unity of succession and reflects the civil law tradition. While subject to specific exceptions based on public policy and statutory prohibitions, its application is strict, as evidenced by unwavering jurisprudence. Practitioners must diligently identify the decedent’s national law at the time of death and secure its proper proof in court to ensure the correct distribution of the estate, whether it consists of real property within the Philippines or personal property abroad.