Quick answer

Philippine law protects an heir’s right to inherit, but the amount and manner of inheritance depend on several facts: whether there is a valid will, the heir’s legal relationship to the deceased, which other heirs survive, the property regime of any marriage, the estate’s debts and taxes, lifetime donations, and whether any heir validly renounced or was lawfully disinherited.

Children, certain descendants, surviving spouses, and—in the absence of legitimate descendants—legitimate parents or ascendants are generally compulsory heirs entitled to a reserved share called the legitime. Illegitimate children are also compulsory heirs of their parents, although their shares are generally smaller than those of legitimate children. A legally adopted child generally inherits from an adopter without distinction from a legitimate child.

A will cannot simply eliminate a compulsory heir’s legitime. That requires a valid disinheritance for a cause expressly stated by law. If there is no valid will, or the will does not dispose of the entire estate, the rules on intestate succession determine who inherits.

No reliable share can be computed from a family tree alone. The estate must first be identified and valued, the surviving spouse’s own property separated, enforceable debts and charges deducted, relevant donations collated, and all qualified heirs established.

What passes to the heirs

Succession opens at the moment of death. It transmits the deceased’s property, transmissible rights, and obligations up to the value of the inheritance. Heirs do not become personally liable for the deceased’s debts beyond the value of what they inherit.

The estate may include:

Land, condominium units, houses, vehicles, shares, business interests, bank deposits, investments, and personal property owned by the deceased
The deceased’s share in community or conjugal property
Receivables and other rights that survive death
Certain intellectual-property, contractual, or litigation rights
Obligations that are not extinguished by death

The estate does not automatically include everything titled in the deceased’s name, nor does it automatically exclude everything titled in another person’s name. Ownership, the spouses’ property regime, source of funds, dates of acquisition, donations, trusts, and supporting documents may all matter.

Before inheritance is divided, the surviving spouse’s own share in absolute-community or conjugal property must be separated. Only the deceased spouse’s net share enters the hereditary estate. The surviving spouse may then inherit from that estate in a separate capacity as an heir.

Who are compulsory heirs?

Article 887 of the Civil Code identifies the principal compulsory heirs:

Legitimate children and descendants, with respect to their legitimate parents and ascendants
In the absence of legitimate children or descendants, legitimate parents and ascendants
The surviving spouse
Acknowledged or otherwise legally established illegitimate children and their descendants

These categories do not always exclude one another. For example, a surviving spouse may inherit together with legitimate and illegitimate children.

A grandchild ordinarily inherits by representation only in situations recognized by law, such as when the grandchild’s parent—the nearer-degree heir—predeceased the decedent, is incapacitated to inherit, or was disinherited. Representation does not apply merely because the parent prefers that the grandchild receive the property.

Brothers, sisters, nephews, nieces, and more remote relatives are not compulsory heirs merely because they are relatives. They may inherit under intestate succession when the closer classes of heirs are absent, or under a valid will from the disposable portion.

Legitimate and illegitimate children

Legitimate children are compulsory heirs of their parents. If several legitimate children inherit in their own right, they generally receive equal shares, subject to the rights of a surviving spouse, illegitimate children, and other applicable heirs.

An illegitimate child is also a compulsory heir of each legally established parent. Under Article 176 of the Family Code, the legitime of each illegitimate child is generally one-half of the legitime of a legitimate child.

Filiation must be proved through evidence recognized by law. A birth certificate may be important, but its effect depends on what it records and whether the relevant acknowledgment or signature is legally sufficient. Other possible evidence includes a final judgment on filiation, an admission in a public document or private handwritten instrument, civil-registry records, and evidence allowed under the Family Code and procedural rules. Using the father’s surname is not, by itself, a substitute for establishing every legal requirement for inheritance.

Article 992 of the Civil Code also restricts intestate succession between an illegitimate child and the legitimate children or relatives of that child’s parent, and vice versa. The Supreme Court applied this statutory restriction in Aquino v. Aquino, G.R. Nos. 208912 and 209018, December 7, 2021. Because family lines and representation can make this rule difficult to apply, an intestate claim through a parent or grandparent should be assessed from the complete family tree and civil-registry records.

Rights of an adopted child

Under Sections 41 and 43 of the Domestic Administrative Adoption and Alternative Child Care Act, Republic Act No. 11642, an adoptee is considered the adopter’s legitimate child and the adopter and adoptee have reciprocal rights of succession without distinction from legitimate filiation.

Adoption generally severs legal ties with the biological parents, except where a biological parent is the adopter’s spouse. Testamentary succession involving the adoptee or biological parents may require separate examination of the will, the date and type of adoption, and the governing adoption law.

Informal care, use of a family surname, or treatment as a child does not by itself have the legal effect of a valid adoption order.

What if there is a will?

A valid will controls the disposable part of the estate, but it ordinarily cannot impair the legitimes of compulsory heirs.

No will—whether notarized, witnessed, or handwritten—passes property unless it is proved and allowed in probate under Article 838 of the Civil Code and the Rules of Court. The probate court primarily determines due execution and validity of the will. Questions concerning ownership, heirship, legitimes, and distribution may require additional proceedings.

A compulsory heir who receives less than the proper legitime may demand completion of that legitime. Testamentary gifts and, where applicable, lifetime donations that exceed the disposable portion may be reduced to the extent necessary to restore protected shares.

Omission is not always valid disinheritance

Simply leaving a compulsory heir’s name out of a will is not necessarily a valid disinheritance.

Disinheritance must:

Be made in a valid will
Identify the compulsory heir being disinherited
State a cause expressly recognized by the Civil Code
Be supported by proof if the disinherited heir denies the cause

The statutory causes differ for children and descendants, parents and ascendants, and spouses. Family disagreement, estrangement, personal disappointment, or a general statement that an heir has already received enough is not automatically a lawful cause.

An unintentional total omission of a compulsory heir in the direct line may constitute preterition, with consequences under Article 854 of the Civil Code. Its effect depends on the will’s language, the identity of the omitted heir, and whether the omission was total.

What happens when there is no valid will?

Intestate succession applies when a person dies without a will, the will is invalid or ineffective, no instituted heir succeeds, or part of the estate was not disposed of by the will.

Common intestate patterns include:

Surviving relatives	General rule
Legitimate children only	They inherit in equal shares, subject to representation where legally proper.
Surviving spouse and legitimate children	The spouse receives a share equal to that of each legitimate child.
Legitimate and illegitimate children	Each illegitimate child generally receives one-half of the share of each legitimate child.
Surviving spouse, legitimate children, and illegitimate children	The spouse generally receives the share of one legitimate child; each illegitimate child generally receives one-half of a legitimate child’s share.
Legitimate parents only, with no legitimate descendants	The parents generally inherit; if both survive, they ordinarily divide the estate equally.
Surviving spouse and legitimate parents	The spouse generally receives one-half and the legitimate parents or ascendants receive the other half.
Surviving spouse and illegitimate children, without legitimate descendants or ascendants	The spouse generally receives one-half and the illegitimate children divide the other half.
Surviving spouse and siblings, nephews, or nieces, with no descendants, ascendants, or illegitimate children	The spouse generally receives one-half and the qualified collateral relatives receive the other half under the rules on representation and full- or half-blood relationships.
No spouse, descendants, ascendants, or illegitimate children	Qualified collateral relatives may inherit in the statutory order; beyond the degree allowed by law, the State may inherit.

These are starting rules, not final computations. Representation, adoption, half-blood relationships, unworthiness, renunciation, legal separation, void or bigamous marriages, foreign nationality, and property located abroad can change the result.

A live-in partner who was not legally married to the deceased is not a surviving spouse for intestate succession. That person may nevertheless own part of jointly acquired property, be named in a valid will subject to legal restrictions, or have another contractual or property claim.

The legitime and disposable portion

A legitime is the part of the estate reserved by law for compulsory heirs. The testator may generally dispose by will only of the portion left after all legitimes are satisfied.

For example, when legitimate children are the only compulsory heirs, their collective legitime is generally one-half of the net hereditary estate, divided among them according to law. The other half is generally disposable. The calculation changes when a spouse, illegitimate children, parents, or represented descendants also inherit.

A correct computation normally requires:

Determining the property owned by the deceased at death
Liquidating the spouses’ property regime, if applicable
Deducting enforceable debts and proper estate charges
Valuing the net hereditary estate
Adding donations subject to collation for legitime calculations
Identifying all compulsory heirs and the capacity in which each inherits
Computing each legitime and the disposable portion
Reducing excessive donations or testamentary dispositions when legally required

The Supreme Court has emphasized that a compulsory heir’s share cannot be reliably determined without establishing the net estate, collating relevant lifetime donations, and identifying the proper legitimes. See Mactan-Cebu International Airport Authority v. Heirs of Miñoza, G.R. No. 257454, July 26, 2023.

Lifetime donations and advances

Property given by the deceased during life may still affect the final inheritance.

A compulsory heir who inherits with other compulsory heirs generally must bring qualifying donations or gratuitous transfers into the accounting through collation. This usually does not mean physically returning the property. Its value is considered when determining legitimes and equalizing shares.

Not every family expense is collatable. Ordinary support, education, medical attendance, customary gifts, and certain other expenses are treated differently under the Civil Code. A donor may also provide that a donation is not subject to collation, but that instruction cannot be used to defeat another compulsory heir’s legitime.

Preserve deeds of donation, tax declarations, transfer records, bank evidence, written acknowledgments, and proof of the property’s value at the legally relevant time.

Rights before the estate is partitioned

Before partition, the heirs generally hold the hereditary estate in co-ownership. Each heir has an undivided hereditary interest, not automatic exclusive ownership of a particular room, parcel, vehicle, bank account, or other asset.

An heir ordinarily cannot unilaterally sell the whole of a specific estate property as though it belonged exclusively to that heir. A disposition of an undivided hereditary right is subject to the share ultimately awarded and may trigger statutory rights of other co-heirs, including the right of redemption under Article 1088 when its requirements are met.

No co-heir may simply exclude the others, conceal income, appropriate rent, destroy records, or transfer estate assets without accounting. On partition, co-heirs must account for income and fruits received, necessary or useful expenses, and damage caused through fault.

Acceptance and renunciation

An heir may accept or repudiate an inheritance only after the person whose estate is involved has died. An agreement renouncing a future legitime while that person is still alive is void.

Acceptance may be express or may result from acts that necessarily imply an intention to accept. Renunciation must comply with the formal requirements of Article 1051 of the Civil Code: it must be made in a public or authentic instrument or by petition presented to the court handling the estate.

Renunciation can have tax and succession consequences. The effect differs depending on whether the waiver is general, gratuitously favors identified co-heirs, or occurs after acceptance. Do not sign a waiver, quitclaim, extrajudicial settlement, or deed of sale without knowing the estate’s assets, liabilities, and your computed share.

Extrajudicial settlement versus court proceedings

An estate may be settled extrajudicially under Rule 74 when the deceased left no will and no outstanding debts, and all heirs are adults or any minors are properly represented by judicial or legal representatives. The heirs execute a public instrument of settlement; a sole heir may execute an affidavit of self-adjudication.

The settlement or adjudication must be published once a week for three consecutive weeks in a newspaper of general circulation. For registered land, proof of publication and the required tax and registration documents must be submitted to the Register of Deeds. A two-year lien is annotated when an extrajudicial settlement is registered, as provided by Section 86 of the Property Registration Decree.

Publication does not make it safe to omit a known heir. An extrajudicial settlement generally does not bind a person who did not participate and had no notice. Deliberately excluding an heir, misrepresenting that the signer is the sole heir, or hiding a will or debt can lead to civil, tax, registration, and possible criminal consequences.

Judicial settlement is generally appropriate when:

There is a will requiring probate
Heirs dispute filiation, heirship, ownership, shares, or partition
An heir is missing or cannot validly consent
The estate has unresolved debts or competing creditors
Someone challenges a transfer, donation, waiver, or alleged disinheritance
An executor or administrator is needed to preserve assets
Extrajudicial settlement requirements cannot be met

Under Rule 73, the proper court and venue generally depend on the deceased’s residence at death or, for a nonresident, the location of estate property in the Philippines. The exact filing should be checked against the current jurisdictional and venue rules.

Estate tax and transfer requirements

Inheritance rights and estate-tax liability are related but distinct. Paying estate tax does not, by itself, prove exclusive ownership or settle a dispute over who the heirs are.

For deaths on or after January 1, 2018, the estate tax is generally 6% of the net taxable estate under the National Internal Revenue Code as amended by the TRAIN Law. The estate tax return is generally due within one year from death. The Commissioner may grant a filing extension of up to 30 days in meritorious cases. Subject to statutory conditions, payment may be extended for up to five years in a judicial settlement or two years in an extrajudicial settlement when immediate payment would impose undue hardship.

A return is required for taxable transfers and, regardless of value, when the estate contains registered or registrable property for which a BIR Certificate Authorizing Registration is required. If the gross estate exceeds ₱5 million, the return generally must include the statement certified by a CPA specified in the regulations.

Applicable deductions may include the statutory standard deduction, qualified family-home deduction, valid claims against the estate, certain mortgages and taxes, qualifying transfers for public use, property previously taxed, and the surviving spouse’s net share. Requirements vary with the date of death and the decedent’s citizenship or residence.

Consult the BIR’s Estate Tax guidance, Revenue Regulations No. 12-2018, and the Revenue District Office having jurisdiction. Older estates may be governed by different tax rates, deductions, filing rules, and any amnesty law applicable during its authorized period.

Practical steps for an heir

Secure civil-registry records. Obtain the PSA death certificate and relevant birth, marriage, adoption, and death records for possible heirs.
Locate the original will. Do not distribute property on the strength of an unprobated will or a photocopy without legal assessment.
Build a complete family tree. Include all marriages, children, adopted children, predeceased children and their descendants, parents, and potentially relevant siblings.
Inventory the estate. Identify land, titles, tax declarations, vehicles, bank and investment accounts, insurance, pensions, shares, businesses, receivables, digital assets, and property abroad.
Separate ownership from inheritance. Establish which property was exclusive, community, conjugal, jointly owned, or merely held in the deceased’s name.
List debts and expenses. Preserve loan documents, mortgages, tax records, hospital and funeral bills, judgments, and creditor communications. Do not pay questionable claims without verification.
Document lifetime transfers. Gather deeds of donation, sale documents, bank transfers, tax filings, and evidence of advances to heirs.
Preserve the property. Secure titles, keys, devices, account records, lease documents, and insurance. Record the condition of valuable assets and income being collected.
Avoid premature transfers. Do not sell, withdraw, subdivide, or retitle estate assets until authority, taxes, co-heir consent, and registration requirements are clear.
Choose the proper settlement process. Confirm whether extrajudicial settlement is legally available or probate or administration is required.
Address tax and registration deadlines promptly. Late filing can result in interest, surcharge, and penalties even while heirs are still negotiating.
Put agreements in the correct form. A private family understanding may not be sufficient for renunciation, partition, taxation, or registration.

Evidence worth preserving

Keep originals or reliable certified copies of:

Death, birth, marriage, and adoption records
The original will, codicils, and related envelopes or custody records
Land titles, deeds, tax declarations, surveys, and real-property tax receipts
Bank statements, passbooks, investment records, and stock certificates
Corporate records and business financial statements
Vehicle registrations and insurance policies
Loan, mortgage, and creditor documents
Deeds of donation, waivers, settlements, and prior partitions
Proof of payments for estate expenses and property preservation
Leases, rental records, crop proceeds, dividends, and other estate income
Messages or documents concerning acknowledgment of filiation, ownership, concealment, threats, or disputed signatures
Photographs and inventories of valuable personal property

Do not alter the original will, write on it, remove staples, or circulate it unnecessarily. Preserve electronic records in their original form and make secure backups.

Common mistakes

Assuming the eldest child controls the estate or receives a larger share
Treating property titled to the deceased as entirely hereditary without liquidating the marital property regime
Believing a surviving spouse always receives one-half of every asset
Assuming a live-in partner has the inheritance rights of a legal spouse
Excluding an illegitimate or adopted child without checking filiation and adoption records
Dividing only the visible assets while ignoring debts, donations, businesses, or estate income
Using an unprobated will as the sole basis for transfer
Publishing an extrajudicial settlement while knowingly omitting an heir
Signing a waiver without an inventory, valuation, or share computation
Selling a specific estate property before partition without all required authority
Assuming tax payment or a new title conclusively cures an invalid settlement
Delaying action while another person possesses, mortgages, develops, or sells estate property

When legal help is urgent

Seek prompt advice from a Philippine succession lawyer when:

Someone is about to sell, mortgage, withdraw, or transfer estate assets
An heir was omitted from a deed or affidavit of self-adjudication
A signature, will, acknowledgment, marriage, adoption, or birth record is disputed
There are competing spouses, multiple families, or uncertain filiation
A compulsory heir may have been disinherited or preterited
An heir is a minor, incapacitated, missing, or abroad
The estate includes a business, foreign assets, substantial debt, or contested land
A co-heir is collecting rent or income without accounting
You receive a court summons, probate notice, demand letter, eviction threat, or notice of sale
A tax, registration, redemption, or procedural deadline may be running

Claims involving inheritance, co-ownership, fraud, reconveyance, probate, and land registration do not all have the same limitation period. Do not assume that being an heir makes every claim perpetual or that the two-year Rule 74 period is the only deadline.

Frequently asked questions

Can a parent leave everything to only one child?

Not if doing so impairs the legitimes of other compulsory heirs, unless those heirs were validly disinherited for statutory causes. The favored child may keep only what fits within that child’s legitime, the disposable portion, and any other amount lawfully attributable to that child after collation and reduction.

Does the eldest child receive the biggest share?

No. Birth order does not ordinarily increase an heir’s share and does not make the eldest child the automatic administrator.

Can an illegitimate child inherit from the father?

Yes, if paternal filiation is legally established. The child is a compulsory heir of the father, although the share is generally one-half of a legitimate child’s share. Different restrictions may apply when the claim is through the father to one of his legitimate relatives.

Can an adopted child inherit equally?

A legally adopted child generally inherits from the adopter without distinction from a legitimate child. The adoption order, applicable adoption law, and any relationship with biological parents should be checked.

Does a surviving spouse automatically own half of the estate?

No. The spouse may first own a share in community or conjugal property, which is not inheritance. The spouse then receives a hereditary share from the deceased’s net estate. Both amounts depend on the property regime, asset classification, debts, and other heirs.

Can one heir sell inherited land without the others?

Before partition, an heir may have an undivided hereditary interest but ordinarily cannot convey the entire land or another heir’s share. A buyer generally acquires only the rights the selling heir ultimately has, subject to partition and applicable redemption rights.

Is notarization enough to make an extrajudicial settlement valid?

No. The substantive Rule 74 conditions, participation or representation of all heirs, publication, tax compliance, and registration requirements must also be met. Notarization does not cure fraud, omission of an heir, lack of capacity, or the existence of a will or unresolved debt.

Does paying real-property tax make someone the owner?

Not by itself. Tax declarations and receipts may be evidence, but they are not conclusive proof of hereditary ownership and do not replace a valid settlement, probate order, deed, or registration.

Can an heir waive an inheritance before the parent dies?

No. A waiver or compromise concerning a future legitime is void. Renunciation is possible only after succession opens and must follow the required form.

Must every estate go to court?

No. A qualifying intestate estate may be settled extrajudicially under Rule 74. A will, unresolved debt, contested heirship or ownership, absent valid consent, or another material dispute may require court proceedings.

Official legal sources

This article provides general Philippine legal information, not legal advice or a definitive computation of any person’s share. Succession rights depend on the dates, documents, family relationships, property ownership, applicable law, and procedural history of the particular estate. Official sources and current procedures were checked as of August 28, 2026.