Affidavit of Legitimation (Philippines)

An Affidavit of Legitimation in the Philippines provides a formal sworn account of the facts it concerns, executed in the manner the law requires for it to be relied on.

Legitimation is the legal process by which an illegitimate child — a child born outside of a valid marriage — acquires the status of a legitimate child with all the rights attendant thereto, including the right to bear the father's surname, the right to parental authority from both parents, and successional rights in intestate inheritance under Articles 887 and 983 of the Civil Code of the Philippines. Under Article 177 of the Family Code, legitimation occurs by the subsequent valid marriage of the parents, provided that at the time of the child's birth, the parents were not disqualified by any impediment from marrying each other (other than non-age under RA 9858).

Republic Act No. 9858 extended legitimation to children born of parents who were below the marrying age at the time of the child's birth — previously excluded from legitimation because the parents were disqualified by non-age — provided the parents subsequently contract a valid marriage upon reaching the minimum age of 18 years under Republic Act No. 11596 (Prohibition of Child Marriage Act, 2022).

The Affidavit of Legitimation is filed with the Local Civil Registrar of the city or municipality where the child's birth was registered, together with the PSA-certified birth certificate of the child and the PSA-certified marriage certificate of the parents. The Local Civil Registrar annotates the birth certificate, and the PSA issues a new PSA-certified birth certificate reflecting the child's legitimated status and the father's surname.

The legal framework governing the Affidavit of Legitimation (Philippines) in Philippines draws on several key statutes and regulatory bodies. Under Philippine law, the Civil Code of the Philippines (Republic Act No. 386) governs contractual obligations. The Revised Corporation Code (Republic Act No. 11232) regulates corporate entities through the Securities and Exchange Commission (SEC). The Labor Code of the Philippines (Presidential Decree No. 442) and Department of Labor and Employment (DOLE) govern employment matters. The Data Privacy Act of 2012 (Republic Act No. 10173) and the National Privacy Commission (NPC) protect personal data. The Bureau of Internal Revenue (BIR) administers tax obligations under the National Internal Revenue Code. Parties executing a Affidavit of Legitimation (Philippines) in Philippines should confirm the document reflects current law, including any amendments enacted since the original drafting date. The Civil Code of the Philippines (RA 386) sets the foundational requirements.

An Affidavit of Legitimation in the Philippines is needed when the biological parents of an illegitimate child subsequently marry each other and wish to legitimize the child by updating the child's civil registry records.

An Affidavit of Legitimation is filed when a child was born before the marriage of the biological parents — typically born to a couple who were living together or in a common-law relationship — and the parents have now contracted a valid marriage, triggering legitimation under Article 177 of the Family Code.

An Affidavit of Legitimation is required when a child's PSA birth certificate shows the mother's surname only (because the father was not married to the mother at birth), and the parents have since married, entitling the child to use the father's surname under Article 176 of the Family Code (as amended by Republic Act No. 9255).

An Affidavit of Legitimation is needed for estate and succession purposes: a legitimated child has the same successional rights as a legitimate child under Article 180 of the Family Code — including the right to inherit as a compulsory heir from the father's estate under Article 887 of the Civil Code. Without legitimation, the child is treated as an illegitimate child with inheritance rights limited to one-half the share of a legitimate child under Article 895 of the Civil Code.

An Affidavit of Legitimation is required before the child can be enrolled in school, apply for government benefits, or obtain government-issued IDs using the father's surname, as these agencies rely on the PSA birth certificate to verify the child's identity and parentage.

An Affidavit of Legitimation is needed under RA 9858 when the parents were below the marrying age (below 18 years under RA 11596) at the time of the child's birth but have since reached legal age and contracted a valid marriage.

A valid Affidavit of Legitimation in the Philippines must contain the following elements to effect legitimation under Article 177 of the Family Code and RA 9858.

Identity of Affiants: Full legal names, ages, nationalities, and addresses of both biological parents. Both parents must jointly execute the affidavit; legitimation cannot be effected by only one parent.

Child's Details: Full name of the child as it appears in the PSA birth certificate, date and place of birth, and PSA birth certificate registry number. Attach the PSA-certified birth certificate as Annex 'A'.

Parents' Marriage: Date and place of the parents' subsequent valid marriage, and the PSA-certified marriage certificate registry number. Attach the PSA-certified marriage certificate as Annex 'B'. The marriage must be a valid marriage under the Family Code — not a void or voidable marriage.

Declaration of Legitimation: An express declaration that by reason of the parents' subsequent valid marriage, the child is hereby legitimated under Article 177 of the Family Code, and that at the time of the child's birth, the parents were not disqualified by any impediment (other than non-age, if RA 9858 applies) from marrying each other.

New Name of Child: State the child's new name after legitimation — typically adopting the father's surname. The affidavit should specify the full new name to be recorded by the Local Civil Registrar.

Notarization: The Affidavit of Legitimation must be notarized by a Philippine notary public (or a Philippine Consul for Filipinos abroad) to be accepted by the Local Civil Registrar under the Notarial Law (Act No. 2103) and the 2004 Rules on Notarial Practice.

Filing with Local Civil Registrar: Submit the notarized affidavit, PSA birth certificate of the child, PSA marriage certificate, and valid government IDs of both parents to the Local Civil Registrar where the birth was registered. The Local Civil Registrar annotates the birth certificate and transmits the annotation to the PSA.

Additional compliance elements for a Affidavit of Legitimation (Philippines) used in Philippines include: Under Philippine law, the Civil Code of the Philippines (Republic Act No. 386) governs contractual obligations. The Revised Corporation Code (Republic Act No. 11232) regulates corporate entities through the Securities and Exchange Commission (SEC). The Labor Code of the Philippines (Presidential Decree No. 442) and Department of Labor and Employment (DOLE) govern employment matters. The Data Privacy Act of 2012 (Republic Act No. 10173) and the National Privacy Commission (NPC) protect personal data. The Bureau of Internal Revenue (BIR) administers tax obligations under the National Internal Revenue Code. Forms-legal.com provides this template as a starting point for Philippines-compliant documentation.