If the PSA birth certificate already shows that the father acknowledged the child, the child may be able to use the father’s surname in a Philippine passport—but only if the civil registry record legally supports that surname. For passport purposes, the Department of Foreign Affairs generally follows the name appearing in the PSA-issued Certificate of Live Birth or PSA-authenticated Report of Birth. The common problem is that many birth certificates show the father’s name or acknowledgment, but the child is still registered under the mother’s surname. In that situation, the acknowledgment alone is not enough to make DFA print the father’s surname on the passport; the civil registry record usually needs the proper RA 9255 process and PSA annotation first.
The basic rule: DFA follows the PSA birth record
A Philippine passport is not where a person’s surname is first “chosen” or corrected. The passport reflects the applicant’s legal name based on civil registry documents.
Under Republic Act No. 11983, or the New Philippine Passport Act of 2024, a natural-born Filipino applicant proves citizenship through a PSA-authenticated Certificate of Live Birth, Report of Birth, or Certificate of Foundling, whichever applies. For minors, the law also recognizes that the application may be filed by either parent, but if another person files it, a Special Power of Attorney must come from the person exercising parental authority under existing law. The same law says Philippine naming conventions and relevant Philippine laws on names govern what appears in the passport. (Lawphil)
This means DFA officers normally look at three things:
- What name appears on the PSA birth certificate or Report of Birth;
- Whether the child is legitimate, legitimated, adopted, foundling, or non-marital/illegitimate;
- Whether the parent or companion appearing with the minor has legal authority to file the passport application.
For a child born to unmarried parents, the surname issue is governed mainly by Article 176 of the Family Code, as amended by Republic Act No. 9255.
What a father’s acknowledgment means under Philippine law
A father’s acknowledgment is a formal recognition of paternity. It may appear:
- On the Certificate of Live Birth;
- At the back of the birth certificate;
- In a separate public document, such as an Affidavit of Admission of Paternity or Affidavit of Acknowledgment;
- In a private handwritten instrument personally written and signed by the father.
RA 9255 amended Article 176 of the Family Code to allow an illegitimate child to use the father’s surname if the father expressly recognized the child’s filiation through the civil registry birth record, a public document, or a private handwritten instrument. The same provision preserves the father’s right to file an action during his lifetime to prove non-filiation. (Lawphil)
The important word is may. The law allows the child to use the father’s surname when the legal requirements are met. It does not automatically force the child to use the father’s surname just because the father acknowledged paternity.
The Supreme Court made this clear in Grande v. Antonio, G.R. No. 206248, February 18, 2014. The Court ruled that the general rule is that an illegitimate child uses the mother’s surname, and the RA 9255 exception allows, but does not compel, the use of the father’s surname. The Court also held that parental authority over minor illegitimate children belongs to the mother, unless she is shown to be unfit. (Supreme Court E-Library)
Does a PSA birth certificate acknowledgment allow use of the father’s surname in a passport?
Usually, yes—but only when the PSA record already reflects the father’s surname as the child’s legal surname, or the record has been properly annotated under RA 9255.
Here is the practical distinction:
| PSA birth certificate situation | Can DFA usually issue the passport using father’s surname? | What usually needs to be done |
|---|---|---|
| Child’s registered surname is already the father’s surname, and the birth record shows proper acknowledgment | Usually yes | Bring PSA birth certificate and required DFA documents |
| Birth certificate names the father, but the child’s surname is still the mother’s surname | Usually no | File RA 9255 documents first, then secure annotated PSA copy |
| Father signed an affidavit of acknowledgment after birth, but it was never registered with the civil registrar | Usually no | Register the affidavit with the Local Civil Registry Office or Philippine Foreign Service Post |
| Birth certificate has no father listed, but the father now wants to acknowledge the child | Not yet | Execute and register proper paternity documents and AUSF, if the child will use father’s surname |
| Parents later married and the child is qualified for legitimation | Possibly, after annotation | Register legitimation documents and obtain PSA birth certificate with legitimation annotation |
A common misunderstanding is: “The father’s name appears on the PSA birth certificate, so the child can automatically use his surname.” That is not always correct. If the child’s registered last name is still the mother’s surname, DFA normally cannot simply replace it with the father’s surname during passport encoding.
Legal basis for using the father’s surname
Article 176 of the Family Code and RA 9255
Article 176 of the Family Code, as amended by RA 9255, provides the main rule for children born outside a valid marriage. Illegitimate children use the mother’s surname and are under the mother’s parental authority, but they may use the father’s surname if filiation is expressly recognized in the legally accepted ways. (Supreme Court E-Library)
This is why a passport application for a non-marital minor often focuses on two separate issues:
- Name: Is the father’s surname legally reflected in the PSA record?
- Authority: Who has the legal right to file or consent to the passport application?
The father’s acknowledgment may help with the first issue, but it does not automatically solve the second. For a minor illegitimate child, the mother remains the parent with parental authority under Article 176 unless there is a court order, adoption, legitimation, or another legally recognized situation.
PSA rules on RA 9255 and the AUSF
The administrative process is handled through the civil registry system, not directly through DFA. The key document is the Affidavit to Use the Surname of the Father, commonly called the AUSF.
The PSA’s Revised Implementing Rules and Regulations define the AUSF as a registrable instrument executed so the child may use the father’s surname. They also recognize the Local Civil Registry Office and Philippine Foreign Service Posts as relevant filing points, depending on whether the birth or documents are being handled in the Philippines or abroad. (Supreme Court E-Library)
In 2023, PSA OCRG Administrative Order No. 1-2023 amended the coverage of the RA 9255 rules so they apply to non-marital children during the effectivity of the Family Code, including unregistered births and registered births where the child used the mother’s surname. It also states that prevailing RA 9255 issuances have retroactive effect for births occurring within and outside the Philippines, in accordance with the amended coverage rule. (Supreme Court E-Library)
Who signs the AUSF?
The person who signs the AUSF depends on the child’s age and circumstances.
| Age of child | Who usually executes the AUSF |
|---|---|
| 0 to 6 years old | Mother, or guardian if the mother is absent |
| 7 to 17 years old | Child, with attestation by the mother or guardian |
| 18 years old and above | The child, now an adult, signs personally |
This age-based rule matters because some families discover the problem only when applying for a passport, school record, visa, or foreign residency document. A child who was small when first registered may later need to personally participate in the RA 9255 process if already 7 or older.
Step-by-step guide if you want the passport to use the father’s surname
1. Get a fresh PSA birth certificate
Start with a recent PSA-issued Certificate of Live Birth. Do not rely only on the hospital copy, municipal copy, baptismal certificate, school records, or an old photocopy.
Check the following carefully:
- Child’s first name, middle name, and surname;
- Father’s name;
- Mother’s maiden name;
- Date and place of birth;
- Whether the parents are listed as married or unmarried;
- Any annotation on the side or bottom of the PSA certificate;
- Whether there is wording referring to RA 9255, acknowledgment, admission of paternity, AUSF, legitimation, adoption, or correction.
For DFA purposes, the PSA copy is the safest working document because passport officers rely on it as the official civil registry record.
2. Identify whether the child is legitimate, illegitimate, or legitimated
This affects both the surname and who must appear for the passport application.
- Legitimate child: Born during a valid marriage of the parents.
- Illegitimate or non-marital child: Born to parents who were not validly married to each other at the time of birth.
- Legitimated child: Originally born outside marriage, but later legitimated because the parents subsequently validly married and legal requirements were met.
- Adopted child: Governed by adoption records and the amended birth certificate after adoption.
Do not assume that acknowledgment by the father makes the child legitimate. It does not. Acknowledgment establishes paternity for certain legal purposes and may allow use of the father’s surname, but it does not convert the child’s status from illegitimate to legitimate.
3. If the PSA record already uses the father’s surname, prepare for DFA application
If the PSA birth certificate already shows the child’s surname as the father’s surname, and the record supports paternity acknowledgment or RA 9255 compliance, the next step is usually the passport appointment.
For a minor new passport application, DFA and Philippine Embassy passport pages commonly require personal appearance of the minor applicant, a printed application packet or accomplished form, the PSA birth certificate or Report of Birth, and valid identification documents of the parent or authorized adult companion. (Philippine Embassy Canberra)
For a non-marital minor in the custody of the mother, the Philippine Embassy in Canberra’s passport requirements state that the minor and the mother or authorized adult companion must personally appear, with the PSA birth certificate and the mother’s passport or valid government ID. If the mother is not accompanying the child, a Special Power of Attorney executed by the mother is required; if executed abroad, it must be authenticated by the Philippine Embassy or Consulate. (Philippine Embassy Canberra)
4. If the PSA record still uses the mother’s surname, complete RA 9255 first
If the child’s PSA birth certificate shows the mother’s surname but the family wants the passport to carry the father’s surname, the usual process is:
Prepare proof of paternity acknowledgment. This may be the father’s signed acknowledgment on the birth certificate, an Affidavit of Admission of Paternity, an Affidavit of Acknowledgment, or another accepted public or private handwritten instrument.
Prepare the AUSF. The proper person must execute it depending on the child’s age.
File the documents with the Local Civil Registry Office. File where the birth was registered. If the birth was reported abroad, the relevant Philippine Embassy or Consulate may be involved.
Pay local civil registry and PSA-related fees. Fees vary by city, municipality, and foreign service post.
Wait for endorsement and annotation. The Local Civil Registrar transmits or endorses the record for PSA annotation. This is often the slowest part.
Request a new PSA birth certificate. The updated PSA copy should show the proper annotation or the new surname record.
Use the annotated PSA copy for the passport application.
PSA’s public guidance for a birth certificate already registered under the mother’s surname states that the father’s affidavit of acknowledgment should be registered with the civil registry office where the birth was registered, and because the child is using the mother’s surname, an AUSF should also be executed with that office. (Philippine Statistics Authority)
5. Check the middle name issue before the DFA appointment
For many illegitimate children using the father’s surname under RA 9255, the child’s middle name is commonly the mother’s surname, because the child’s last name becomes the father’s surname. However, DFA will still follow the PSA record.
Do not ask DFA to “add” or “remove” a middle name if the PSA birth certificate does not support it. Fix the civil registry record first.
6. Book the passport appointment only when the PSA record is ready
Booking too early often leads to wasted trips. The most common reason for deferral is that the family brings an acknowledgment or AUSF document, but the PSA certificate has not yet been annotated.
A practical rule: if the name you want on the passport is not the name shown or supported on the PSA record, fix the PSA record first.
Required documents for common scenarios
Minor child, unmarried parents, using father’s surname already shown on PSA record
| Document | Notes |
|---|---|
| PSA birth certificate | Must show the child’s legal name and paternity details |
| Confirmed DFA appointment or application packet | Follow the DFA or consular post’s current system |
| Personal appearance of minor | Required for biometrics and photo |
| Mother’s valid ID or passport | Especially important for non-marital minors |
| Mother’s personal appearance, or SPA if absent | SPA should be properly notarized or authenticated if executed abroad |
| Father’s ID | Helpful if father accompanies, but usually not a substitute for mother’s authority in non-marital cases |
| School ID of child, if available | Often requested as supporting ID for minors |
Minor child, birth certificate acknowledged by father but still under mother’s surname
| Document or step | Purpose |
|---|---|
| PSA birth certificate | Confirms current registered surname |
| Father’s acknowledgment or AAP | Establishes recognized filiation |
| AUSF | Allows use of father’s surname |
| Filing with LCRO or Philippine Foreign Service Post | Makes the document part of the civil registry system |
| Annotated PSA birth certificate | Needed before passport name can follow father’s surname |
| DFA minor passport requirements | Used after annotation is completed |
Adult applicant acknowledged by father and now wants to use father’s surname
| Document or step | Purpose |
|---|---|
| PSA birth certificate | Confirms present registered name |
| Father’s acknowledgment document | Establishes basis under RA 9255 |
| AUSF executed by adult child | Adult applicant signs personally |
| LCRO or PFSP registration | Registers the legal instrument |
| Annotated PSA birth certificate | Used for passport application |
| Valid IDs consistent with the intended name, if available | Helps avoid identity questions |
Timelines and practical bottlenecks
Actual processing time depends heavily on the Local Civil Registry Office, PSA endorsement, document completeness, and whether the birth was registered abroad.
| Process | Practical timeline |
|---|---|
| Getting a PSA birth certificate | A few days to a few weeks, depending on online delivery, CRS outlet availability, or overseas access |
| Preparing notarized acknowledgment/AUSF | Same day to a few days, if all signatories and IDs are available |
| LCRO registration of RA 9255 documents | Often a few days to several weeks |
| PSA annotation after LCRO endorsement | Commonly several weeks to a few months |
| Passport appointment and processing | Depends on DFA appointment availability and processing option |
| Passport validity for minors | Five years for applicants under 18 under RA 11983 (Lawphil) |
The biggest bottleneck is usually not the DFA appointment. It is getting the PSA record corrected or annotated before the passport appointment date.
Common problems in real passport applications
The father signed the birth certificate, but the child’s surname is still the mother’s surname
This is very common. The father’s signature or name may prove acknowledgment, but if the child’s registered surname remains the mother’s surname, DFA usually cannot issue the passport using the father’s surname until the RA 9255 process is reflected in the PSA record.
The father is the one bringing the child to DFA
For legitimate children, either parent may generally file the passport application. For non-marital children, the mother’s parental authority is central under Article 176. DFA and consular posts commonly require the mother’s appearance or a mother-executed SPA when the mother cannot accompany the minor. (Supreme Court E-Library)
If the father alone appears with a non-marital minor and there is no mother’s SPA, death certificate, guardianship document, or other legal basis, the application may be deferred.
The parents are now married, but the PSA birth certificate is not yet legitimated
If the parents later married, the child may be qualified for legitimation, but DFA will still look for the proper PSA annotation. The passport will not automatically use the father’s surname merely because the parents are now married. The legitimation must be registered and reflected in the PSA record.
The mother is abroad
If the mother is abroad and the minor is applying in the Philippines or another country, the mother may need to execute a Special Power of Attorney or Affidavit of Support and Consent, depending on the situation. If executed abroad, consular authentication or notarization rules of the relevant Philippine Embassy or Consulate should be followed. Some documents executed in foreign jurisdictions may also need apostille or consular acknowledgment, depending on the country and the document’s intended use.
The child was born abroad
A Filipino child born abroad usually needs a Report of Birth registered with the Philippine Embassy or Consulate. If the child is non-marital and will use the father’s surname, the consular civil registry process may include acknowledgment of paternity and AUSF requirements. For example, a Philippine consular Report of Birth checklist for illegitimate children may require an Affidavit of Admission of Paternity and an AUSF, with the mother signing for children below 7 and the child signing at age 7 and above, plus the mother’s sworn attestation for minors. (nagoyapcg.dfa.gov.ph)
The child already has school records using the father’s surname
School records do not control the passport name. They may help explain identity, but they cannot override the PSA birth certificate. If the PSA record uses the mother’s surname, the school record using the father’s surname may actually create inconsistency unless the RA 9255 annotation is completed.
The father refuses to cooperate
If the father has never acknowledged the child and refuses to sign any paternity document, the administrative RA 9255 route may not be available. Depending on the facts, filiation may need to be established through court proceedings or other legally recognized evidence. For passport purposes, however, DFA will still require a civil registry basis for the name to be printed.
Important distinction: surname, legitimacy, custody, and support are separate issues
Using the father’s surname does not mean all legal issues are automatically resolved.
| Issue | Effect of father’s acknowledgment or RA 9255 |
|---|---|
| Surname | May allow use of father’s surname if properly registered |
| Legitimacy | Does not make the child legitimate |
| Parental authority | For minor illegitimate children, remains with the mother under Article 176 unless law or court order provides otherwise |
| Support | The father may still have support obligations if paternity is established |
| Inheritance | Illegitimate children have rights under Article 176, but not the same legitime as legitimate children |
| Passport consent | For non-marital minors, mother’s authority remains very important |
This is why a child can be acknowledged by the father and still require the mother’s appearance or consent for the passport application.
Frequently Asked Questions
Can my child use the father’s surname in a Philippine passport if the PSA birth certificate is acknowledged by the father?
Yes, if the PSA birth certificate or PSA annotation legally supports the father’s surname as the child’s surname. If the birth certificate only shows acknowledgment but the child is still registered under the mother’s surname, complete the RA 9255 and AUSF process first.
Is the father’s name on the birth certificate enough for DFA to print his surname as the child’s last name?
Not always. The father’s name may show paternity, but DFA usually follows the child’s registered name on the PSA certificate. If the surname field still shows the mother’s surname, DFA will likely require an annotated PSA record before using the father’s surname.
What is an AUSF?
AUSF means Affidavit to Use the Surname of the Father. It is a registrable civil registry document used when an acknowledged non-marital child will use the father’s surname under RA 9255.
Who should accompany an illegitimate minor child to the DFA passport appointment?
Usually the mother should accompany the child, because Article 176 places parental authority over minor illegitimate children with the mother. If the mother cannot appear, DFA or the relevant Philippine Embassy or Consulate may require a Special Power of Attorney from the mother and her valid ID or passport.
Can the father apply for the child’s passport without the mother?
For a non-marital minor, this is usually difficult unless there is a legal basis such as the mother’s SPA, the mother’s death certificate, a court order, guardianship documents, or another recognized circumstance. A father’s acknowledgment alone does not automatically transfer parental authority from the mother.
Does using the father’s surname make the child legitimate?
No. RA 9255 affects surname use. It does not by itself make the child legitimate. Legitimation is a separate process, usually involving the subsequent valid marriage of the parents and the proper civil registry annotation.
Can an adult child use the father’s surname if the father acknowledged them long ago?
Yes, if the legal requirements are met. An adult child usually executes the AUSF personally, registers it with the proper civil registry office or Philippine Foreign Service Post, and waits for the annotated PSA birth certificate before applying for a passport under the father’s surname.
What if the PSA annotation is still pending but the passport appointment is tomorrow?
The application may be deferred if the requested passport name does not match the PSA record. It is usually better to wait for the annotated PSA birth certificate before proceeding, especially if the main purpose of the appointment is to obtain a passport under the father’s surname.
Can DFA correct the surname during the passport appointment?
No. DFA is not the civil registrar. If the surname on the PSA birth certificate is wrong, incomplete, or not yet annotated under RA 9255, the correction or annotation must be handled through the Local Civil Registry Office, PSA, court, or Philippine Foreign Service Post, depending on the issue.
Is a notarized affidavit from the father enough?
It may be part of the requirements, but for passport purposes it usually must be properly registered and reflected in the PSA civil registry record if it changes the child’s surname. Bringing an unregistered affidavit to DFA is often not enough.
Key Takeaways
- DFA generally prints the applicant’s name based on the PSA birth certificate or PSA-authenticated Report of Birth.
- A father’s acknowledgment can support the child’s use of the father’s surname, but it does not always automatically change the child’s registered surname.
- For a non-marital child still registered under the mother’s surname, the usual route is RA 9255 plus an AUSF, filed with the Local Civil Registry Office or Philippine Foreign Service Post.
- The safest document for passport filing is a PSA birth certificate already showing the correct surname or a proper RA 9255 annotation.
- For minor illegitimate children, the mother’s parental authority remains crucial, even if the father acknowledged the child.
- Using the father’s surname does not make the child legitimate; legitimation, adoption, custody, support, and passport consent are separate legal matters.
- Fix the PSA record first before booking or attending the passport appointment if the desired passport surname differs from the current PSA record.