In Philippine law, a Last Will and Testament is the legal instrument by which a person, known as the testator, disposes of his or her property and rights to take effect after death. Governed primarily by the Civil Code of the Philippines (Republic Act No. 386), the law on succession (Book III, Articles 774 to 1105) adopts a formalistic approach to ensure the authenticity of the testator’s intent and to protect against fraud, undue influence, or forgery. A will is defined under Article 783 as “an act whereby a person is permitted, with the formalities prescribed by law, to control to a certain degree the disposition of his estate, to take effect after his death.” Because the rules are mandatory and strictly construed, any defect in form or substance may render the will void. This article sets out every legal requirement, type of will, procedural formality, and related rule under current Philippine jurisprudence and the Civil Code.

I. Testamentary Capacity of the Testator

Only natural persons may execute a will. Under Article 796, the testator must be:

At least eighteen (18) years of age at the time of execution; and
Of sound mind.

Soundness of mind is presumed (Article 799) unless the contrary is proved. Article 798 requires that the testator must know at the moment of execution: (a) the nature of the testamentary act, (b) the approximate nature and extent of his property, and (c) the persons who are the natural objects of his bounty and his relations to them. Article 800 lists circumstances that do not disqualify a person (e.g., temporary intoxication, old age, or illness) provided the three requisites above are satisfied at the exact time of execution. Minors below 18, persons under civil interdiction, and those judicially declared insane during the period of their incapacity are absolutely disqualified (Articles 797, 801). A will executed during lucid intervals is valid if capacity is present at the time of signing.

II. Essential Characteristics and General Requisites

Every will must be:

In writing (Article 804) – oral or nuncupative wills are not recognized.
Executed with the exact formalities prescribed by law for the particular type of will chosen.
Made freely, without fraud, violence, intimidation, or undue influence (Article 839).
Intended to take effect only after the testator’s death (Article 783).

The will is ambulatory and revocable until the testator’s death. It cannot dispose of property that the testator does not own at the time of death (except future property in limited cases), nor can it impair the legitime of compulsory heirs (Articles 886–914).

III. Kinds of Wills Recognized in the Philippines

Philippine law recognizes only two kinds of wills:

A. Notarial (Ordinary) Will – the standard type executed before a notary public and three witnesses (Articles 805–809).
B. Holographic Will – entirely handwritten by the testator (Article 810).

Joint wills (two or more persons executing a single instrument) are prohibited under Article 818, except that spouses may execute reciprocal wills in the same instrument provided each will is separately signed and attested. Wills executed abroad follow special conflict-of-laws rules discussed below.

IV. Formal Requirements for a Notarial Will

The notarial will is the most commonly used because it is easier to probate. The following mandatory formalities must be observed under Articles 805 to 809:

Language Requirement – The will must be written in a language or dialect known to the testator (Article 804). If the testator is blind, the will must also be read to him twice—once by the notary and once by one of the witnesses (Article 808).
Subscription by the Testator – The testator must sign the will at the end (or have another person sign in his name and presence under his express direction if he is unable to sign). The signature must appear on every page on the left margin except the last page, which is signed at the end.
Attestation by Three Witnesses – Three credible witnesses must attest that: (a) the testator signed the will (or directed another to sign) in their presence, (b) they signed in the presence of the testator and of each other, and (c) the testator was of sound mind. The witnesses must sign on every page on the left margin and at the end of the attestation clause.
Attestation Clause – An unsigned clause is fatal. The clause must state: (a) the number of pages used, (b) that the testator signed (or caused another to sign) in the presence of the witnesses, (c) that the witnesses signed in the presence of the testator and each other, and (d) all other acts required by law. The clause must be written in a language known to the witnesses.
Acknowledgment Before a Notary Public – The testator and all three witnesses must personally appear before a notary public and acknowledge that the instrument is their free act and deed. The notary must certify the due execution and acknowledgment in the notarial certificate.
Page Numbering and Continuity – All pages must be numbered correlatively in letters on the upper part of each page.
Special Rules for Incapacitated Testators:
- Deaf or mute testator: must personally read the will if able; otherwise, it must be read to him twice (Article 807).
- Testator unable to read or write: the signing may be done by another in his presence and under his direction.

Failure to comply strictly with any of the above renders the notarial will void.

V. Formal Requirements for a Holographic Will

Article 810 provides the simplest form: the will must be entirely written, dated, and signed by the hand of the testator himself. No witnesses, notary, or attestation clause is required. The following rules apply:

The entire document—including the date and signature—must be in the testator’s handwriting.
Any insertion, cancellation, erasure, or interlineation made after execution must also be signed and dated by the testator to be valid (Article 811).
If the holographic will is contested, at least three witnesses who know the testator’s handwriting must testify to its authenticity (Article 811).
A holographic will may be executed anywhere, even without a notary.

VI. Codicils and Subsequent Instruments

A codicil is any addition, alteration, or modification of a prior will. It must follow exactly the same formalities as the original will—either notarial or holographic (Article 825). A codicil may republish a previously revoked will if the formalities are observed (Article 835).

VII. Contents of a Valid Will

A will may contain:

Institution of heirs (universal or specific).
Legacies and devises (specific gifts of personal or real property).
Appointment of an executor or administrator.
Designation of a guardian for minor children.
Directions for burial or funeral rites.
Any other lawful disposition.

The will must respect the legitime (compulsory share) of the following compulsory heirs: legitimate children and descendants, legitimate parents and ascendants, the surviving spouse, and illegitimate children (Articles 887–892). The free portion may be freely disposed of. Disinheritance is allowed only for causes expressly stated in Articles 916–918 and must be made in a will, stating the cause.

VIII. Qualifications and Disqualifications of Witnesses (Notarial Wills)

Witnesses must be:

At least 18 years old.
Of sound mind.
Able to read and write.
Not blind, deaf, or dumb.
Domiciled in the Philippines.

Disqualifications (Article 821):

Persons who are not domiciled in the Philippines.
Those who have been convicted of falsification of a document, perjury, or false testimony.
Interested witnesses: a witness who is also a legatee or devisee loses the benefit of the legacy or devise unless there are at least three other disinterested witnesses (Article 823).

IX. Wills Executed Abroad

Filipinos abroad may execute a will according to the law of the place of execution (lex loci celebrationis) or according to Philippine law (Article 815).
Aliens may execute a will in the Philippines according to Philippine law or the law of their nationality (Article 816).
For real property located in the Philippines, Philippine law on formalities always applies (lex rei sitae).

X. Revocation and Nullity of Wills

A will is revoked by:

Execution of a subsequent will that expressly revokes the prior one or is inconsistent with it (Article 830).
Physical destruction or burning of the will by the testator with the intention of revoking it (Article 830).
Operation of law: e.g., annulment of marriage, birth of a child after the will, or subsequent adoption (Articles 833–837).

A will that is lost or destroyed without the testator’s consent may be probated if its contents are proved by two credible witnesses (Article 804, in relation to Rule 76 of the Rules of Court).

XI. Probate Proceedings

No will shall pass any property until it is admitted to probate by a competent court (Article 838). Probate is a judicial proceeding to prove the due execution and authenticity of the will. Even holographic wills must be probated. The proceeding is in rem; notice to all interested parties is required. Once probated, the will becomes conclusive as to its due execution.

XII. Common Causes of Invalidity and Practical Considerations

Lack of testamentary capacity.
Non-compliance with any mandatory formality.
Presence of undue influence, fraud, or forgery.
Failure to respect legitime (the will remains valid but the compulsory heirs may claim their legitime via an action for reduction).
Omission of a compulsory heir (preterition) may annul the institution of heirs but not the entire will (Article 854).

The testator should keep the original will in a safe place and inform the executor of its location. Duplicate originals or photocopies have limited value unless executed with the same formalities. It is advisable to execute a new will rather than make extensive handwritten changes to an existing one.

Philippine law on wills balances the testator’s freedom of disposition with the protection of family and heirs through strict formalities and the legitime system. Compliance with every requirement is not merely technical; it is the only way to ensure that the testator’s last wishes are respected and enforced after death.