I. Introduction

This memorandum provides an exhaustive analysis of the rules governing intestate succession under Philippine civil law. Intestate succession is the mode of devolution of the property of a deceased person who dies without a valid will or whose will is void. The rules establish a fixed order of preference among the decedent’s relatives and, in default thereof, the state, determining who shall inherit the estate and in what proportions. This memo will detail the legal foundation, the specific order of heirs, their respective shares, the right of representation, and other pertinent doctrines.

II. Legal Foundation and Governing Law

The primary law governing intestate succession is the Civil Code of the Philippines (Republic Act No. 386), specifically Articles 960 to 1015. These provisions are suppletory to the provisions on testate succession and apply only in the absence of a valid will. The rules are mandatory and designed to reflect the presumed will of the decedent based on natural affection and the strength of family ties. The Family Code (Executive Order No. 209) and the Rules of Court (particularly the Rules on Special Proceedings) provide supplementary procedural rules for the settlement of intestate estates.

III. Primary Condition for Intestate Succession

Intestate succession takes place under the following circumstances: (1) when a person dies without a will; (2) when a will is void for failure to comply with the formalities prescribed by law or due to the testator’s lack of testamentary capacity; (3) when the will does not institute an heir to, or dispose of, all the property comprising the estate, in which case intestate succession shall operate over the undisposed portion; and (4) when the instituted heirs predecease the testator or are incapable of succeeding, and no substitute has been named.

IV. Compulsory Heirs and the Legitime in Intestacy

While the concept of legitime (the portion of the estate reserved by law for certain heirs) is primarily a limitation on testamentary freedom, it is intrinsically linked to intestate succession. In intestacy, the compulsory heirs inherit the entire estate. The compulsory heirs are: (1) the legitimate children and descendants; (2) the legitimate parents and ascendants; and (3) the surviving spouse. Illegitimate children are also compulsory heirs, but their share is distinct. In intestacy, the rules automatically allocate the estate in a manner that respects these preferential rights.

V. Order of Intestate Succession and Shares

The law establishes a strict order of priority. Heirs in a prior class exclude all heirs in subsequent classes.

First Order: Legitimate children and descendants. They inherit per capita (by head) if all are of the same degree (e.g., all children). If there are descendants of different degrees (e.g., a child and a grandchild), they inherit per stirpes (by roots or representation).

Second Order: Legitimate parents and ascendants. They inherit only in the absence of legitimate descendants. The surviving spouse inherits together with the parents. In the absence of parents, the nearest ascendants inherit.

Third Order: Illegitimate children. They inherit only in the absence of legitimate descendants and ascendants (legitimate parents and other ascendants). The surviving spouse inherits together with the illegitimate children.

Fourth Order: The surviving spouse. The spouse inherits alone only in the absence of all relatives in the first, second, and third orders, and in the absence of illegitimate parents (see Sixth Order).

Fifth Order: Brothers and sisters, nephews, and nieces. Collateral relatives inherit only in the absence of all heirs in the first four orders. Full-blood siblings are preferred over half-blood siblings.

Sixth Order: Other collateral relatives within the fifth degree (e.g., uncles, aunts, cousins). They inherit only in the default of all nearer relatives.

Seventh Order: The State. In default of any heir, the estate escheats to the Republic of the Philippines.

VI. The Right of Representation

Representation is a right created by fiction of law where the representative steps into the place of the person they represent. It takes place in intestate succession only within the first order (legitimate descendants) and the fifth order (among brothers and sisters, for nephews and nieces). It does not apply to ascendants or to illegitimate children. For example, if a legitimate child predeceases the decedent, that child’s own legitimate children (the decedent’s grandchildren) will inherit the share their parent would have received, divided equally among them.

VII. Comparative Table of Intestate Shares Under Different Scenarios

The following table illustrates the distribution of the net estate (after all debts, charges, and estate tax) in common scenarios, assuming no disinheritance or incapacity.

VIII. Exceptions and Special Rules

Pretermitted Heirs: A compulsory heir omitted from the will is entitled to their full legitime. In intestacy*, this issue does not arise as all heirs are considered.
Incapacity to Succeed: Heirs may be disqualified under Article 1032* (e.g., unworthiness, alienation of affection).
Simultaneous Death: Under Article 43 of the Family Code*, if there is no evidence as to who died first, it is presumed that the persons died at the same time and no succession occurs between them.
Illegitimate Parents: They are not compulsory heirs. They inherit only under Article 994*, in the absence of legitimate descendants, illegitimate children, legitimate ascendants, surviving spouse, brothers/sisters, nephews/nieces, and other collateral relatives.

IX. Procedural Aspects: Judicial Settlement

The settlement of an intestate estate is a special proceeding filed in the Regional Trial Court of the province where the decedent resided. An interested party petitions for the appointment of an administrator who will collect the assets, pay debts and taxes, and distribute the net estate to the heirs as determined by the court. The court issues an order of declaration of heirs and a project of partition for approval.

X. Conclusion

Intestate succession in the Philippines is a comprehensive, hierarchical system designed to distribute a decedent’s property according to a fixed order of preference among relatives, culminating in the State. The system prioritizes direct legitimate descendants, then ascendants, then the surviving spouse together with illegitimate children, and finally collateral relatives. The operation of representation and the distinct treatment of full and half-blood relationships are key nuances. Understanding this order is fundamental for legal practitioners in estate planning, settlement proceedings, and advising clients on the implications of dying without a valid will.