In the Philippines, the surname a child carries is more than just a name; it is a reflection of their legal status and relationship with their parents. For children born out of wedlock (legally classified as illegitimate), the law has evolved to provide a mechanism for them to bear their father's surname, even if the parents are not married.
This process is primarily governed by Republic Act No. 9255, which amended Article 176 of the Family Code of the Philippines.
The Core Legal Framework: R.A. 9255
Prior to the enactment of R.A. 9255 in 2004, illegitimate children were strictly required to use the surname of their mother. The law now states that illegitimate children may use the surname of their father if:
- The father has acknowledged the child through the record of birth appearing in the civil register; or
- The father admits paternity through an Affidavit of Admission of Paternity (AAP) or a Private Handwritten Instrument (PHI).
The Role of Consent
It is important to note that the law uses the word "may," implying that the use of the father's surname is a right granted to the child/mother, but it requires the father’s explicit acknowledgment of paternity. The father cannot be forced to give his surname via an administrative process without his written admission.
The Essential Documents
To successfully register or change a child's surname to that of the father, specific legal instruments must be filed with the Local Civil Registrar (LCR).
| Document | Purpose |
|---|---|
| Affidavit of Admission of Paternity (AAP) | A legal statement signed by the father acknowledging that he is the biological parent of the child. |
| Affidavit to Use the Surname of the Father (AUSF) | A formal request to use the father's surname, executed by the mother or the child (depending on the child's age). |
| Private Handwritten Instrument (PHI) | A document entirely written and signed by the father in his own handwriting, admitting paternity. |
Who executes the AUSF?
The person responsible for signing the Affidavit to Use the Surname of the Father (AUSF) depends on the age of the child:
- 0 to 6 years old: The mother or guardian executes the AUSF.
- 7 to 17 years old: The child executes the AUSF with the attestation of the mother or guardian.
- 18 years old and above: The individual executes the AUSF themselves, without needing parental consent.
Procedural Scenarios
The process varies depending on whether the birth is being registered for the first time or if the birth certificate is being updated later.
1. At the Time of Birth
If the father is present and willing to acknowledge the child at birth:
- He signs the "Informant" section and the "Affidavit of Admission of Paternity" located at the back of the Certificate of Live Birth (COLB).
- The AUSF is filed along with the COLB at the LCR.
- The child’s birth is recorded with the father’s surname immediately.
2. After the Birth has been Registered
If the child was originally registered under the mother’s surname:
- The father must execute an AAP (unless he already signed the COLB).
- The appropriate party (mother or child) executes the AUSF.
- These documents are filed with the LCR where the birth was registered.
- The LCR will not issue a new birth certificate but will instead place an annotation on the original certificate stating that the child is now authorized to use the father's surname.
Rights and Implications
Changing a child’s surname to the father's has specific legal consequences. It is vital to distinguish between name usage and parental rights.
- Parental Authority: Under Article 176, even if the child uses the father's surname, sole parental authority remains with the mother. The father does not automatically gain custody or joint authority simply by giving his name.
- Support: Acknowledgment of paternity (required for the surname change) is a legal admission that makes the father's obligation to provide financial support demandable by law.
- Succession/Inheritance: An acknowledged illegitimate child is a compulsory heir and is entitled to a legitime (inheritance), which is typically half of the legitime of a legitimate child.
Important Reminders
Note on Judicial Process: If a father refuses to acknowledge a child, the mother cannot use the administrative process of R.A. 9255. Instead, she must file a Compulsory Recognition case in court. Once the court issues a final judgment of paternity, the birth record can be updated.
- Place of Filing: Documents must generally be filed at the LCR of the city or municipality where the birth occurred.
- Foreign Births: For children born abroad to Filipino parents, the documents are filed with the Philippine Consulate having jurisdiction over the place of birth.
- Fees: Local Civil Registries charge administrative fees for processing these affidavits and annotations, which vary by municipality.