Children born out of wedlock, also known as illegitimate children, may use the surname of the father under Republic Act No. 9255.
All you need is to file the necessary application with the civil registry of the place where your child was born along with the following documents:
- Certified true copy of child’s birth certificate (most require NSO certificates)
- Affidavit to Use the Surname of the Father (see attached form)
- Valid IDs of parents or the registrant if 18 years or older.
- For certificates of live birth with unknown fathers, submit additional documents such as the affidavit of acknowledgment/paternity and documents showing father’s signature like SSS, GSIS Policy Contract, ITR, PhilHealth and other proof of filiation.
- Note: In some cities/municipalities, the local civil registrar may require the personal appearance of the mother and father to confirm their identities.
Processing time can vary but will usually take a week. Estimated cost Php1,000.00.