ABOUT THE SERVICES: Similar to court decrees/order, legal instruments are also registerable in the Civil Registrar where the birth certificate of the child is registered.
The following are considered legal instruments:

  • The affidavit of Acknowledgement/Admission of paternity – a public document executed by the biological father establishing paternal relationship with the child.
  • Legitimation – is a remedy by means of which those in fact were not born in wedlock and should, therefore, be considered illegitimate, are by fiction, considered legitimate, it being supposed that they were born when their parents were already validly married.
  • Affidavit to Use Surname of the Father – under RA 9255, it is a public instrument executed by the father giving the child the privilege to use his surname.
CLIENT GROUPS: Parents of illegitimate children.
REQUIREMENTS: Acknowledgement/Admission of Paternity:

  1. Registered Certificate of Live Birth of the child
  2. Duly notarized affidavit of acknowledgement/admission of paternity
  3. Baptismal Certificate
  4. Proof of Paternal filiation (if the child is not acknowledged upon registration.)


  1. Registered Certificate of Live Birth of the child duly acknowledged by the father
  2. Duly notarized affidavit of legitimation executed by both parents
  3. Marriage Contract
  4. Certificate of no previous marriage to other person

Affidavit to Use Surname of Father:

  1. Registered Certificate of Live Birth of the child
  2. Duly notarized AUSF executed by the father himself (if the father is not mentioned in the Certificate of Live Birth of the child; or by the mother/guardian (if the father is already mentioned in the COLB of the child)
  3. At least two (2) public handwritten instrument of the father (if not…)
SERVICE SCHEDULE: Monday to Friday
8:00 AM to 12:00 noon & 1:00 to 5:00 PM
Step 1 >> 20 minutes

Submit requirements & provide the necessary information during the interview

MCR Staff reviews requirements & interviews the client, instruct to pay the fees

Step 2 >> 5 minutes

Pay the corresponding fees at the treasury office.

RCC II/I (MTO) issues Official Receipt

Step 3 >> 10 minutes

Return to MCR and submit the official receipt.

MCR Staff records the documents & informs the client of the date of release

Step 4 >> 5 minutes

Claim the certified true copies of the COLB of the child on the date advised sign the logbook as proof of receipt

MCR Staff releases certified true copies of COLB