Estate succession in the Philippines is one of the most sensitive areas of family and property law because it sits at the intersection of death, family status, property ownership, and compulsory inheritance rules. The legal issues become especially delicate when the deceased leaves both legitimate and illegitimate children. In many families, the main questions are practical: Who inherits, how much does each child receive, can a will change the shares, does the surviving spouse also inherit, and what happens if property was conjugal or exclusive?

This article explains the Philippine rules on succession involving legitimate and illegitimate children, focusing on the Civil Code, the Family Code, and long-settled principles of intestate and testate succession. It is written for Philippine use and uses Philippine legal concepts.

I. Basic framework of succession in the Philippines

Succession is the mode of transmitting the property, rights, and obligations of a deceased person to his or her heirs. In the Philippines, succession may be:

Testate succession — when the decedent left a valid will.

Intestate succession — when there is no will, or the will does not validly dispose of the whole estate.

Mixed succession — partly by will and partly by operation of law.

Even where there is a will, Philippine law protects certain heirs called compulsory heirs. They cannot be completely deprived of the portion of the estate reserved to them by law, except in very limited cases of valid disinheritance for legal causes.

When legitimate and illegitimate children are involved, the law becomes strict because both classes of children may be compulsory heirs, but their rights are not always equal in all settings.

II. Who are legitimate and illegitimate children

Legitimate children

A legitimate child is one conceived or born during a valid marriage of the parents, or one who becomes legitimate under the law through subsequent valid marriage of the parents in cases allowed by law.

Legitimacy matters in succession because legitimate children belong to the direct descending line and are primary compulsory heirs.

Illegitimate children

An illegitimate child is one born outside a valid marriage, except in situations where the law recognizes legitimacy.

Under Philippine law, illegitimate children are also compulsory heirs of their parents. Their status does not strip them of successional rights. However, their successional shares are governed by specific rules and, in many situations, are less than those of legitimate children.

A critical point: an illegitimate child inherits from his or her parents, but legal relationships in succession can differ depending on whether the succession is from the mother, the father, or collateral relatives, and whether filiation is duly established.

III. The first question in every case: establish filiation

Before inheritance rights can be enforced, the child’s legal relationship to the deceased must be proven.

For legitimate children

Legitimacy is generally shown through the birth certificate and the existence of the valid marriage of the parents.

For illegitimate children

An illegitimate child must usually establish filiation through legally recognized proof, such as:

record of birth appearing in the civil register or a final judgment
admission of filiation in a public document or a private handwritten instrument signed by the parent
open and continuous possession of the status of a child
other evidence allowed by law and jurisprudence

In actual succession disputes, this is often the decisive issue. A biological relationship alone is not always enough in court unless supported by competent evidence recognized by law. DNA evidence may become relevant in litigation, but succession rights are enforced through proof acceptable under procedural and substantive law.

Without successful proof of filiation, the child may fail to participate in estate distribution even if biologically related to the decedent.

IV. Compulsory heirs relevant to this topic

The main compulsory heirs that usually matter in cases involving legitimate and illegitimate children are:

legitimate children and descendants
illegitimate children and descendants
surviving spouse
legitimate parents and ascendants, but only if there are no legitimate children or descendants

A basic hierarchy must be remembered:

Legitimate children and descendants exclude legitimate parents and ascendants.
Illegitimate children do not exclude the surviving spouse.
The surviving spouse usually concurs with children.

This means that when the deceased leaves legitimate children, the legitimate parents no longer inherit as compulsory heirs. But the surviving spouse still may.

V. Two big systems: intestate succession and testate succession

The rules differ depending on whether there is a valid will.

A. Intestate succession

If there is no valid will, the estate is distributed according to the rules laid down by law.

B. Testate succession

If there is a valid will, the testator may dispose only of the free portion. The legitime of compulsory heirs must still be respected.

A common mistake is thinking that a parent may simply leave everything by will to one favored child or to a new spouse. In Philippine law, that is generally not allowed when compulsory heirs exist.

PART ONE: INTESTATE SUCCESSION

VI. Intestate succession when only legitimate children survive

When a person dies without a will and leaves only legitimate children, they inherit in their own right and in equal shares.

If one legitimate child predeceased the parent, that child’s own legitimate descendants may inherit by right of representation, depending on the circumstances.

If there is also a surviving spouse, the spouse typically shares equally with each legitimate child under the rules of intestate succession.

Example: The decedent leaves a surviving spouse and 3 legitimate children. In intestacy, the estate is usually divided into 4 equal parts: 1 share for the spouse and 1 share for each legitimate child.

VII. Intestate succession when only illegitimate children survive

If the deceased leaves no legitimate children or descendants, but leaves illegitimate children, those illegitimate children may inherit from the deceased parent.

They inherit in equal shares among themselves, subject to the concurrence of the surviving spouse and other applicable rules.

If the decedent is the mother, proof of maternity is usually straightforward. If the decedent is the father, proof of paternity becomes the central issue.

VIII. Intestate succession when both legitimate and illegitimate children survive

This is the core issue.

When the decedent leaves both legitimate and illegitimate children, both classes may inherit, but the illegitimate children do not receive the same share as each legitimate child. The traditional statutory rule is that each illegitimate child receives a share equivalent to one-half of the share of each legitimate child.

This is the classic “half-share” rule in succession.

So if the estate is divided among legitimate and illegitimate children in intestacy, the computation is based on units:

each legitimate child = 1 unit
each illegitimate child = 1/2 unit

The estate is then divided according to the total units.

Example 1

Decedent leaves:

2 legitimate children
2 illegitimate children
no surviving spouse

Units:

2 legitimate children = 2 units
2 illegitimate children = 1 unit total

Total = 3 units

Distribution:

each legitimate child gets 1/3 of the estate
each illegitimate child gets 1/6 of the estate

That is because each illegitimate child gets half of a legitimate child’s share.

Example 2

Decedent leaves:

1 legitimate child
1 illegitimate child
no spouse

Units:

legitimate child = 1
illegitimate child = 1/2

Total = 1.5

Distribution:

legitimate child = 2/3
illegitimate child = 1/3

IX. What if there is a surviving spouse together with legitimate and illegitimate children

The surviving spouse is also an intestate heir.

Where the decedent leaves:

legitimate children, and
illegitimate children, and
a surviving spouse,

the spouse’s share must also be accounted for.

The common framework in intestacy is:

the spouse gets a share equal to that of a legitimate child
each illegitimate child gets one-half of a legitimate child’s share

Example

Decedent leaves:

surviving spouse
2 legitimate children
2 illegitimate children

Units:

spouse = 1
2 legitimate children = 2
2 illegitimate children = 1 total

Total = 4 units

Distribution:

spouse = 1/4
each legitimate child = 1/4
each illegitimate child = 1/8

This type of computation frequently appears in estate settlement.

X. Representation in the descending line

A child of a predeceased heir may sometimes inherit by representation.

This matters when, for example, one legitimate child of the decedent dies earlier but leaves children of his or her own. Those descendants may step into the place of the predeceased child.

Representation is an important doctrine because succession often involves multiple generations. However, whether representation applies depends on the line, the class of heirs, and the exact family relationships.

The cleaner rule for ordinary discussion is this: descendants may inherit the share that would have gone to their ascendant when the law allows representation.

PART TWO: TESTATE SUCCESSION AND LEGITIME

XI. What is legitime

The legitime is the portion of the estate which the law reserves for compulsory heirs. The decedent cannot freely dispose of it by will.

The estate, in simplified form, is divided into:

the legitime reserved by law
the free portion that may be given by will

Where there are legitimate and illegitimate children, legitime computations become technical. But the underlying principle is simple: a will cannot impair the minimum shares guaranteed by law to compulsory heirs.

XII. Order of analysis in a succession case

Before computing shares, lawyers and courts usually settle these questions in order:

What properties belong to the estate?
Which properties are exclusive, conjugal, or community property?
What debts, taxes, and expenses must be paid first?
Who are the heirs?
Is there a valid will?
What are the compulsory heirs’ legitimes?
What remains as free portion?

This order matters because heirs inherit only from the net hereditary estate, not from gross assets on paper.

XIII. The surviving spouse’s property rights must be separated first

This is a major source of confusion.

Before distribution to heirs, determine whether the marriage property regime was:

absolute community of property
conjugal partnership of gains
complete separation of property
or another valid regime

If a married decedent leaves property, not all of it automatically belongs to the estate. The surviving spouse may already own one-half or another appropriate share of community or conjugal property before succession even starts.

Only the decedent’s share in the community or conjugal property becomes part of the hereditary estate, together with the decedent’s exclusive properties.

Example

A married decedent and spouse owned community property worth ₱10 million, with no debts.

Usually:

₱5 million already belongs to the surviving spouse as his or her property share
only ₱5 million enters the decedent’s estate for succession purposes

This is crucial. Many heirs incorrectly assume the full ₱10 million is divided among heirs.

XIV. Rights of legitimate children as compulsory heirs

Legitimate children are primary compulsory heirs. In the presence of legitimate children:

legitimate parents and ascendants are excluded
the will cannot deprive the legitimate children of their legitime except through valid disinheritance
they usually receive the largest protected class of shares in the descending line

Under the Civil Code structure, when there are legitimate children, a substantial portion of the estate is reserved to them as legitime.

XV. Rights of illegitimate children as compulsory heirs

Illegitimate children are also compulsory heirs. A parent cannot simply ignore them in a will if filiation is legally established.

However, their legitime is generally computed in relation to the legitimate children’s shares, and the old statutory framework classically used the one-half relation.

In practical terms:

an illegitimate child is entitled to inherit from the parent
a will cannot reduce the illegitimate child below the legal minimum legitime
but the illegitimate child’s protected share is generally not identical to a legitimate child’s share in mixed situations

XVI. Can a parent disinherit a legitimate or illegitimate child

Yes, but only for causes expressly allowed by law, and only if the disinheritance complies with legal formalities.

A child cannot be deprived of legitime merely because:

the parent dislikes the child
the child was born outside marriage
family relations became distant
another family is preferred

Valid disinheritance requires:

a valid will
a legal cause stated by law
clear specification of the cause
proof of the cause if contested

If the disinheritance is invalid, the child remains entitled to legitime.

This is especially important in second-family disputes, where one family claims the other children were “excluded” in the will. Exclusion is not automatically effective unless legal requirements are satisfied.

XVII. Can the parent give everything to the surviving spouse

No, not if there are compulsory heirs whose legitimes would be impaired.

A parent may favor the spouse only out of the free portion, unless some other legal device validly applies. Donations mortis causa and testamentary dispositions are still subject to legitime rules.

Thus, where there are legitimate and/or illegitimate children, a will giving the entire estate to the spouse is generally subject to reduction.

XVIII. Can the parent favor one child over another

To a limited extent, yes, but only using the free portion, and subject to formal validity of the will and the rights of compulsory heirs.

For example, after satisfying the legitimes of all compulsory heirs, the parent may use the free portion to give more to one child, to the spouse, or even to a stranger.

But the parent may not, through a will, eliminate the mandatory minimum shares reserved by law.

PART THREE: IMPORTANT PHILIPPINE DOCTRINES AFFECTING ILLEGITIMATE CHILDREN

XIX. The old distinction among kinds of illegitimate children

Historically, older law distinguished among natural children, acknowledged natural children, spurious children, and similar categories. Modern Philippine family law significantly changed this landscape and generally uses the broader category of illegitimate children.

For present understanding, the main practical concern in succession is usually not the old label but:

whether the person is legally recognized as an illegitimate child of the decedent
whether filiation is established
what share the law grants

Older cases and texts may use outdated terminology. Contemporary discussion should be handled carefully because modern family law simplified many classifications.

XX. The “iron curtain” rule

A famous doctrine in Philippine succession law is the so-called iron curtain rule, traditionally associated with Article 992 of the Civil Code.

The rule, in classic form, bars intestate succession between illegitimate children and the legitimate relatives of the father or mother. It has long been understood to mean that the illegitimate child cannot inherit intestate from the legitimate relatives of the parent, and those legitimate relatives likewise cannot inherit intestate from the illegitimate child, across that legal barrier.

This doctrine has historically had major consequences in cases involving grandparents, siblings, uncles, aunts, and nephews.

What the rule generally means

An illegitimate child may inherit from his or her parent. But difficulties arise when the succession is not directly between child and parent, but between the illegitimate child and the parent’s legitimate family members.

Examples of traditional application:

an illegitimate child generally does not inherit intestate from the legitimate grandparents of the father
legitimate siblings and illegitimate siblings may face barriers in intestate succession depending on the relationship claimed and the operation of Article 992
the barrier applies to collateral and ascendant lines in ways that can drastically affect inheritance expectations

This rule is one of the most litigated and debated parts of Philippine succession law.

Why it matters in this topic

When discussing “estate succession with legitimate and illegitimate children,” many people think only of inheritance from the parent. But large disputes often actually arise after the parent has died, when grandchildren, half-siblings, grandparents, or collateral relatives claim rights. Article 992 can sharply limit succession across family lines divided by legitimacy.

XXI. Direct succession from parent to illegitimate child is allowed

The key point must never be missed: the illegitimate child can inherit from the parent. The main barrier is not the child’s right to the parent’s estate. The barrier concerns succession between the illegitimate child and certain legitimate relatives of the parent under intestate rules.

So, in the core parent-child setting, illegitimate children are heirs. The real legal battle is usually over:

proof of paternity or maternity
the amount of the share
competition with the legitimate family
effect of Article 992 on extended relatives

XXII. Rights of illegitimate children through the mother and through the father

An illegitimate child unquestionably has a legal link to the mother. In paternal succession, the more contentious question is usually proof of paternity.

Once filiation to the father is duly established, the illegitimate child can inherit from the father as a compulsory heir. But if paternity is not established in the manner required by law, the child may fail in the claim.

In practical litigation, succession from the father’s estate is often where the hardest evidentiary disputes arise.

PART FOUR: COMPUTATION PRINCIPLES

XXIII. Step-by-step method for computing shares

A practical way to think about estate shares is this:

Step 1: Determine the gross estate

List all assets belonging to the decedent.

Step 2: Remove property that does not belong entirely to the decedent

Separate the surviving spouse’s share in community or conjugal property.

Step 3: Pay obligations

Debts, taxes, funeral expenses, administration expenses, and valid claims are settled first.

Step 4: Determine the net hereditary estate

This is the amount available for succession.

Step 5: Identify heirs and their status

Determine legitimate children, illegitimate children, spouse, ascendants, and descendants.

Step 6: Determine whether succession is testate or intestate

If there is a valid will, compute legitimes first.

Step 7: Distribute according to legal shares

Apply the rules on concurrence and shares.

XXIV. Sample intestate computations

A. Legitimate and illegitimate children only

Estate: ₱12,000,000 Heirs:

2 legitimate children
2 illegitimate children

Units:

2 legitimate children = 2
2 illegitimate children = 1

Total = 3 units

Each unit = ₱4,000,000

Distribution:

each legitimate child = ₱4,000,000
each illegitimate child = ₱2,000,000

B. Surviving spouse, legitimate and illegitimate children

Estate: ₱12,000,000 Heirs:

surviving spouse
2 legitimate children
2 illegitimate children

Units:

spouse = 1
2 legitimate children = 2
2 illegitimate children = 1

Total = 4 units

Each unit = ₱3,000,000

Distribution:

spouse = ₱3,000,000
each legitimate child = ₱3,000,000
each illegitimate child = ₱1,500,000

C. One legitimate child and three illegitimate children

Estate: ₱9,000,000 Heirs:

1 legitimate child
3 illegitimate children
no spouse

Units:

1 legitimate child = 1
3 illegitimate children = 1.5

Total = 2.5 units

Each unit = ₱3,600,000

Distribution:

legitimate child = ₱3,600,000
each illegitimate child = ₱1,800,000

XXV. The share is in the estate, not specific property unless partition says so

Heirs succeed to an ideal or proportional share in the hereditary estate before partition. That does not mean one heir automatically owns the house, another the lot, and another the bank account, unless:

the will validly assigns them,
the heirs agree in an extra-judicial settlement,
or the court orders partition.

Before partition, co-heirship exists over the estate.

PART FIVE: WILLS, LEGITIME, AND REDUCTION OF EXCESSIVE DISPOSITIONS

XXVI. If there is a will, children still cannot be cut off from legitime

A valid will may distribute the free portion. But if it gives too much to one heir or to a stranger, the testamentary dispositions may be reduced to preserve legitime.

Example: The decedent leaves a will giving almost everything to the second spouse, but also leaves legitimate and illegitimate children. The children may challenge the distribution to the extent that their legitimes were impaired.

XXVII. Preterition

A related concept is preterition, which refers to the total omission in the will of a compulsory heir in the direct line.

This can have serious consequences, including annulment of the institution of heirs in some cases, while preserving devises and legacies insofar as they are not inofficious.

In plain language: forgetting or deliberately omitting a compulsory heir in the direct line is not a harmless drafting error. It can disrupt the whole testamentary plan.

This is especially significant where a testator omits legitimate children, or in some settings fails to account for descendants who should receive legitime.

XXVIII. Donations during lifetime may be collated or reduced

A parent sometimes transfers property during life to one child or to a favored partner to avoid succession rules. This does not always work.

Philippine succession law recognizes doctrines such as:

collation in proper cases
reduction of inofficious donations
protection of compulsory heirs against donations that impair legitime

So if one family received large inter vivos transfers, the other heirs may still question those transfers during estate settlement.

PART SIX: SPECIAL FAMILY SITUATIONS

XXIX. Child from first marriage and child from extramarital relationship

This is one of the most common Philippine disputes.

Suppose the decedent leaves:

children from a valid first marriage
a surviving spouse from that marriage, or a later valid marriage if applicable
one or more illegitimate children from another relationship

The illegitimate children are not erased by the existence of the legitimate family. If their filiation is proved, they inherit. But their share is determined according to the legal rules and is generally smaller than that of each legitimate child in mixed succession.

XXX. Child from void marriage

A child from a void marriage may, depending on the law and circumstances, still be considered legitimate or otherwise protected by the law on filiation and children. The status of children is not always destroyed simply because the marriage itself is void. This area can become technical and fact-specific.

In practice, one must closely examine:

whether the marriage was void or voidable
whether either or both parents were in good faith
what the Family Code provides on the status of the children

This matters because the child’s status directly affects succession rights.

XXXI. Adopted children

An adopted child generally stands in the position of a legitimate child with respect to the adoptive parent for purposes recognized by adoption law. Adoption can therefore significantly affect compulsory heirship and shares in succession.

When succession questions involve adopted children plus biological legitimate or illegitimate children, the adoptive relationship must be carefully included in the computation.

XXXII. Posthumous children

A child conceived before the decedent’s death but born afterward may inherit, provided legal requirements are met. Succession opens at death, but rights of children already conceived are recognized by law in proper cases.

XXXIII. Unrecognized or disputed illegitimate child appearing after death

This happens often.

An alleged illegitimate child may come forward only after the death of the parent. The estate may already be under settlement, partition, or even transfer. The key issues become:

whether the filiation claim is still timely and procedurally proper
what evidence exists
whether prior partition may be reopened or challenged
whether titles and transfers may be affected

These are highly fact-sensitive disputes, often resulting in prolonged litigation.

PART SEVEN: ARTICLE 992 AND EXTENDED FAMILY SUCCESSION

XXXIV. Why Article 992 causes harsh outcomes

The classic effect of the iron curtain rule is that even if blood relationship is undeniable, intestate succession may still be legally blocked between:

the illegitimate child and the legitimate relatives of the parent
and, traditionally, vice versa

This can feel unfair at the human level because Philippine succession does not always track biological closeness alone. It tracks legal family classification.

Thus, a child may inherit from the father directly, but not from the father’s legitimate parents or legitimate siblings in intestacy.

XXXV. Half-siblings: legitimate and illegitimate

One of the most confusing issues is inheritance among half-siblings where one is legitimate and another is illegitimate.

The legal result may depend on:

from whose estate succession is taking place
whether the claim is direct or collateral
whether Article 992 blocks the succession route
whether the relationship is through the same parent
whether representation is being invoked

This is not an area for casual assumptions. A person may be a blood half-sibling and still be barred in intestate succession because of the legitimacy barrier.

XXXVI. Grandparents and grandchildren

If a grandchild is illegitimate and claims against the legitimate grandparents through the parent’s line, Article 992 historically complicates or bars the claim in intestate succession. Again, the issue is not ordinary blood descent alone but the statutory barrier between legitimate and illegitimate family lines.

Because of this, some families incorrectly believe that all descendants automatically inherit by proximity of blood. That is not always true in Philippine intestate law.

PART EIGHT: PROCEDURAL AND PRACTICAL ISSUES

XXXVII. Estate settlement may be judicial or extrajudicial

An estate may be settled:

extrajudicially, if requirements are met and there is no will and no debts, or debts are settled, and the heirs agree
judicially, when there is dispute, a will, debts, minors, or uncertainty

Where there are legitimate and illegitimate children, extrajudicial settlement is risky unless all heirs are identified and included. Excluding an heir can expose the settlement to challenge.

XXXVIII. What happens if an heir is omitted from the settlement

If a legitimate or illegitimate child who is legally entitled is omitted, the omitted heir may challenge the settlement, partition, or transfer.

Possible consequences include:

annulment or rescission issues
reconveyance
reopening of partition
claims against co-heirs
claims against buyers who are not protected purchasers in good faith

An omitted compulsory heir is not lightly disregarded in law.

XXXIX. Taxes and debts come first

Inheritance shares are computed after:

valid debts
expenses of administration
funeral expenses
estate taxes and other charges, where applicable

Heirs inherit the net estate. Many family fights arise because heirs start dividing property without first determining liabilities.

XL. Titles and possession do not always settle heirship

A child who is already in possession of property, or whose name appears in informal family papers, is not automatically the sole heir. Conversely, a child excluded from possession is not automatically disqualified.

Heirship depends on law, filiation, wills, and valid partition — not merely on who held the keys or who stayed in the ancestral house.

XLI. Birth certificate issues

In Philippine practice, the birth certificate is often central. But it may be:

absent
defective
unsigned by the parent
late-registered
contested

Its evidentiary value depends on the circumstances and applicable rules. Succession cases involving illegitimate children can succeed or fail largely on documentary proof.

XLII. Simulation, secret transfers, and nominee arrangements

A decedent may have placed assets in the name of:

a common-law partner
one favored child
a sibling
a corporation
a nominee

The estate still may assert ownership if the transfer was simulated, incomplete, or otherwise legally challengeable. Estate planning designed to defeat compulsory heirs is not always effective.

PART NINE: LIMITS OF PARENTAL FREEDOM IN ESTATE PLANNING

XLIII. Freedom to dispose is limited by compulsory heirship

Philippine law is not a pure freedom-of-testation system. Parents cannot entirely redesign inheritance just because they prefer one family line over another.

Where legitimate and illegitimate children exist, the law superimposes mandatory shares.

That is why many informal declarations such as “I already said everything goes to my second family” or “my first children get nothing because they are estranged” are usually ineffective unless consistent with legal requirements and legitime rules.

XLIV. Common-law partner versus legal spouse

A common-law partner is not automatically an intestate heir in the same way a lawful surviving spouse is. This creates significant conflict in estates involving both a legal family and a later non-marital relationship.

A child from the non-marital relationship may inherit as an illegitimate child if filiation is proved. But the partner, unlike a lawful spouse, does not automatically enjoy the same successional rights merely by cohabitation.

This distinction often shocks families and is a major source of litigation.

XLV. Marriage validity matters enormously

If a later marriage is void, the claimed “spouse” may not inherit as a surviving spouse, though the children may still have rights depending on the law. Thus:

the spouse’s status may fail
the children’s status must still be separately analyzed

Succession cases therefore often require family-law analysis first.

PART TEN: FREQUENT MISCONCEPTIONS

XLVI. “Illegitimate children cannot inherit”

False.

They can inherit from their parents, provided filiation is legally established. They are compulsory heirs.

XLVII. “Illegitimate children get the same as legitimate children”

Not generally true in mixed succession under the traditional statutory framework.

In many classic Philippine succession settings, each illegitimate child gets one-half of the share of a legitimate child.

XLVIII. “A will can completely remove children from inheritance”

False, unless there is valid disinheritance for legal cause and proper formalities.

XLIX. “The surviving spouse gets everything”

False.

The spouse must share with children and other compulsory heirs under the law.

L. “Property in the spouse’s name is never part of the estate”

False.

One must determine whether the property is exclusive, conjugal, or community property.

LI. “A biological child automatically inherits”

Not always in practice.

Legal filiation must be established in the manner recognized by law.

LII. “Being omitted from the deed means no inheritance”

False.

A compulsory heir omitted from settlement may still sue.

PART ELEVEN: PRACTICAL ESTATE ANALYSIS TEMPLATE

In a Philippine estate with legitimate and illegitimate children, the correct legal analysis usually follows this checklist:

1. Identify the decedent

Who died, and when?

2. Determine family status

lawful spouse?
former spouse?
valid marriage?
void marriage?
common-law partner?
legitimate children?
illegitimate children?
adopted children?
descendants of predeceased children?

3. Determine property regime

absolute community
conjugal partnership
separation of property

4. Inventory assets

land
house
bank accounts
shares of stock
business interests
vehicles
insurance
retirement benefits
personal property

5. Determine which assets belong to the estate

Separate the spouse’s share.

6. Determine debts and expenses

Calculate the net estate.

7. Verify filiation documents

Especially for illegitimate children.

8. Check for a will

Is there one? Is it valid?

9. Compute legitime or intestate shares

Apply the correct rules.

10. Examine prior transfers

Were there donations or simulated sales that impaired legitime?

11. Determine proper settlement process

Judicial or extrajudicial.

12. Complete partition and transfer

Only after heirship and shares are settled.

PART TWELVE: CONCLUSION

Under Philippine succession law, legitimate and illegitimate children may both inherit from their parent. The law does not erase an illegitimate child from inheritance merely because the child was born outside a valid marriage. However, it does not always place legitimate and illegitimate children on the same footing in every successional setting. In the classic framework, where both classes survive the parent, the illegitimate child’s share is generally one-half of the share of a legitimate child. The surviving spouse also usually concurs as an heir. A valid will may distribute only the free portion and cannot impair the legitimes of compulsory heirs.

The most important legal realities are these: first, establish filiation; second, identify the proper heirs; third, separate conjugal or community property from the estate; fourth, pay debts before distribution; fifth, respect legitime; and sixth, be alert to the special complications created by Article 992 and disputes involving the legitimate relatives of a parent.

In Philippine estates, succession involving legitimate and illegitimate children is rarely just about arithmetic. It is about status, proof, property regime, compulsory heirship, and the limits imposed by law on private family preferences. A parent may have divided affections in life, but at death the estate is divided according to legal rules, not family sentiment alone.

Because outcomes can turn on exact facts, documents, and procedural posture, this area is especially sensitive where there are second families, void marriages, late recognition of children, disputed birth records, prior donations, or omitted heirs. In those cases, the decisive issue is often not whether a child exists in fact, but whether the child exists in law for succession purposes.