NAMING LAW & REGISTRATION
Understand acknowledgment, the Affidavit to Use the Surname of the Father (AUSF), who signs it, where to register it, and how the birth record is annotated.
RA 9255 amended Family Code Article 176. It allows use of the father’s surname when he expressly recognizes filiation in the civil-register birth record, a public document or a private handwritten instrument. The 2016 revised rules distinguish the father’s Affidavit of Admission of Paternity (AAP) from the AUSF. Without an AUSF, an acknowledged child retains the mother’s surname under Rule 8.2. A handwritten instrument must be the father’s handwriting, signed by him and expressly recognizing the child; the rules require supporting proof if he has died. Bring the original evidence rather than relying on the father’s name being typed on a form. [1] [2]
Rule 8 of the 2016 revised implementing rules identifies who executes the AUSF. For ages 0–6, the mother signs, or the guardian in her absence. For ages 7–17, the child signs with full awareness of the consequences, attested by the mother or guardian. At the age of majority, the person signs without that attestation. The father’s acknowledgment does not replace these requirements. Ask the registrar for the current form and oath arrangements. [2]
Under Rule 5–6, documents executed in the Philippines for a Philippine birth go to the local civil registrar (LCR) of the place of birth. Documents executed abroad go to the Philippine embassy or consulate in the country of residence, or the nearest post if there is none. For a birth abroad with instruments executed in the Philippines, register at the LCR of the place of execution. The documents must be registered within 20 days of execution; otherwise delayed-registration rules apply. Ask the receiving office how it will coordinate with the office holding the birth record. [2]
Philippine Statistics Authority (PSA) AO 1, series of 2023 amended the coverage of the 2016 rules to nonmarital children during the effectivity of the Family Code, including unregistered births and registered births using the mother’s surname. It also provides retroactive effect within that coverage. A birth before RA 9255 (2004) is not by itself a reason for refusal. Pasay’s 2026 charter identifies births on or after 3 August 1988 in its AUSF checklist. Bring an older record to the registrar for the applicable rules rather than applying the original coverage statement alone. [5] [4]
Pasay’s 2026 Citizen’s Charter, pages 751–756, asks for the registered birth certificate, notarized AUSF, the mother’s or guardian’s sworn attestation when applicable, personal appearance and valid IDs. Its published total is ₱520 for AUSF registration or ₱620 for acknowledgment with AUSF, with 5 days and 19 minutes of processing. These totals cover the charter’s specified services and copies; notarization and obtaining other records can add costs. Other offices and consulates have their own charges and release arrangements. Under Rule 7, the registrar records the instruments, annotates the birth record and sends copies onward. Follow up about the PSA copy before using it for ID changes. [4] [2]
Do not confuse surname use with legitimation or assume it transfers parental authority to the father. Article 176 keeps parental authority with the mother for a child born outside marriage. Do not have the father sign an AUSF in place of the person required by the age rules. Seek a lawyer’s help if paternity is disputed, acknowledgment evidence is challenged, the mother had a subsisting marriage to someone else, or there is a dispute about the child’s surname choice. Grande v. Antonio confirms that “may” in the law does not make the father’s surname compulsory. [1] [2] [3] [6]
An acknowledgment and an AUSF have different roles. The revised rules retain the mother’s surname where there is no AUSF, even when the father has acknowledged the child. [2]
No. RA 9255 concerns surname use. Legitimation has separate conditions under Family Code Articles 177–180, including the amendment in RA 9858. [1] [6] [7]
Yes, if the acknowledgment and other requirements apply. Rule 8.5 lets the person execute the AUSF at majority without the mother’s or guardian’s attestation. [2]