Paternity, Rectification, and Name Change in Civil Registry
Practical procedures for paternity acknowledgment, administrative rectification of spelling errors, and name changes in the Civil Registry of Natural Persons.
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Por CartorIA Team — Writing and Legal Notarial and Registry Consulting · 5º Tabelionato de Notas de Recife
Context note: This content describes Brazilian civil registry and legal procedures under Brazilian legislation.
This article answers
- How does paternity acknowledgment work in the civil registry when the father was not present at birth?
- How to request an administrative rectification in the civil registry in case of a spelling error?
- When is it possible to change a name in the civil registry directly at the registry office?
- What happens when the mother appears at the registry office and does not declare who the father of the child is?
- How to change a child's surname and is the signature of both parents required?
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In brief
- Paternity acknowledgment, administrative rectification, and name change in the civil registry are simplified procedures executed at the Registro Civil das Pessoas Naturais (RCPN — Civil Registry of Natural Persons) without the need for a prior court process in most cases.
- Voluntary acknowledgment of paternity can be formalized at any time by the parent directly before the registry official.
- Evident spelling errors in birth or marriage records can be corrected administratively upon presentation of documentary proof.
- Given name changes or the addition of family surnames require compliance with the criteria established by Lei nº 6.015/1973 (Public Registries Law) and directives from the Conselho Nacional de Justiça (CNJ — National Council of Justice).
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How does paternity acknowledgment work in the civil registry when the father was not present at birth?
Voluntary paternity acknowledgment takes place directly at the Civil Registry of Natural Persons. When the father is not present at the time of the birth registration, the child is initially registered under the mother's name alone. The father may, at any later time, go to a civil registry office to perform the spontaneous acknowledgment.
To formalize the act, the father presents his personal identification documents and the child's birth certificate. If the child is of legal age, they must expressly consent to the acknowledgment. If the child is a minor, the mother must provide formal consent before the registry officer.
When the father resides in a city different from where the birth was registered, the act can be performed at the registry office of his own domicile. The local registrar collects the declaration of intent and transmits the documentation through the electronic central system for annotation on the original birth certificate.
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How to request an administrative rectification in the civil registry in case of a spelling error?
Administrative rectification in the civil registry due to a spelling error is the procedure intended to correct material errors that leave no doubt as to the correct spelling ([VERIFY: Lei nº 6.015/1973, art. 110]). Common examples include transposed letters, omitted vowels, or incorrectly spelled names of municipalities in the document.
You submit a signed application directly to the Civil Registry of Natural Persons where the record is located or at the registry office of your current domicile. It is essential to attach old certificates, parents' identity documents, or historical documents proving the family's true spelling.
The registry officer reviews the attached documents. If the error is easily verifiable by documents and does not alter the person's identity, the registrar makes the correction on the record by means of an annotation. The rectified certificate is issued after the analysis is completed, without requiring intervention from the Judiciary.
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When is it possible to change a name in the civil registry directly at the registry office?
Brazilian legislation permits changing a given name directly at the Civil Registry of Natural Persons after a person reaches full civil capacity (legal age) ([VERIFY: Lei nº 6.015/1973, art. 56]). This change can be performed once out of court, without stating a cause, provided legal boundaries are respected and legal certainty is maintained.
To perform an unmotivated change of given name, the interested party appears at the registry office holding personal documents and clearance certificates (certidões negativas) from civil, criminal, and protest distribution courts. These certificates serve to prove that the change does not seek to defraud creditors or conceal criminal records.
It is also possible to change a name to include family surnames that were not included in the original record, or to change a surname due to a change in marital status, such as marriage or divorce. The modification is carried out via annotation on the applicant's original birth record.
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What happens when the mother appears at the registry office and does not declare who the father of the child is?
When the mother appears at the Civil Registry of Natural Persons to register a newborn and chooses not to indicate the name of the father, the registrar draws up the birth registration containing only maternal filiation ([VERIFY: Lei nº 8.560/1992, art. 2º]). The officer informs the mother about the right to indicate the alleged father for the official investigation procedure (averiguação oficiosa).
If the mother decides to provide the indication verbally or in writing, the registrar records the information provided regarding the alleged father. This data is forwarded to the supervisory judge (juiz corregedor) or the Public Prosecutor's Office so that the named individual can be notified to declare regarding paternity.
If the mother prefers to remain silent and not indicate the father at the time of registration, the child fully retains the right to seek paternity acknowledgment in the future. Voluntary or judicial acknowledgment may occur at any moment during the child's civil life.
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How to change a child's surname and is the signature of both parents required?
Changing the surname of a minor child requires the express agreement of both parents. If the intention is to add the surname of one parent that was omitted from the certificate, or to adjust the order of family surnames, both parents must sign the application at the civil registry.
If one parent cannot be present, they may be represented by a public power of attorney with specific powers to agree to the surname modification. When one parent is deceased, the death certificate must be submitted to support the request made by the surviving parent.
In the event of a disagreement between the parents, where one desires the change and the other dissents, the registrar cannot perform the modification administratively. The controversy must be referred to judicial review, where the judge will hear the parties to decide what serves the best interest of the minor.
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Document checklist
To proceed with paternity acknowledgment, administrative rectification, and name change in the civil registry, gather the following documents before going to the Civil Registry of Natural Persons:
- [ ] Official photo ID and CPF (taxpayer ID) of the applicant.
- [ ] Updated birth or marriage certificate of the person whose record will be modified.
- [ ] Historical documents or ancestral certificates proving the correct spelling (for spelling error rectification).
- [ ] Clearance certificates for claims, criminal records, electoral court records, and protest records (for unmotivated given name change by an adult).
- [ ] Signed consent document by the mother (for acknowledgment of a minor child) or by the child themselves (when of legal age).
- [ ] Public power of attorney with specific powers, if one of the interested parties is represented.
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In practice
Case 1: Correction of spelling error in a family surname
A citizen noticed that his surname was listed as "Ferreira" in his recent documents, but on his old birth record his grandfather's surname was spelled "Ferreyra". He wished to standardize his documents to apply for dual citizenship for his family.
The applicant gathered his grandfather's birth certificate and his parents' marriage certificate and submitted the request to the civil registrar. Since it was an evident spelling error, the registry officer applied the administrative rectification rule, corrected the error in the registry book, and issued the updated, corrected certificate.
Case 2: Addition of father's surname after birth
A mother registered her child alone because the father was away on a work trip in another state at the time of birth. Three months later, the couple went together to the local Civil Registry of Natural Persons to formalize spontaneous recognition.
The father presented his RG and CPF and signed the recognition instrument before the registry officer. The mother signed the instrument agreeing to the inclusion of paternity and the addition of the paternal surname to the minor's name. The alteration was annotated on the child's birth certificate without requiring an attorney.
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Common mistakes
- Believing that any name change requires a court lawsuit: Current legislation allows changing a given name directly at the civil registry after reaching full civil age without needing to access the Judiciary.
- Submitting a rectification request without documentary evidence: The registrar cannot modify data in the registry book based solely on verbal statements; it is indispensable to present old certificates or official documents proving the error.
- Attempting to change a minor child's surname with the signature of only one parent: Modifying the surname of a child or adolescent mandatorily requires the consent and signature of both parents, except in the event of the death of one parent proven by a death certificate.
- Thinking that paternity acknowledgment at the registry office generates court costs: The act of voluntary paternity acknowledgment performed directly before the civil registrar is an administrative procedure exempt from court fees.
- Failing to present clearance certificates for a given name change: The out-of-court request for a name change requires the prior presentation of court distribution and protest clearance certificates mandated by governing regulations.
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Legal basis
- Lei nº 8.935/1994, art. 1º — Establishes that notarial and registry services are organized to guarantee the publicity, authenticity, security, and efficacy of legal acts Lei nº 8.935/1994, art. 1º.
- Lei nº 8.935/1994, art. 6º — Defines the duties and powers of notaries and registrars in the performance of public functions Lei nº 8.935/1994, art. 6º.
- Lei nº 14.382/2022, art. 3º — Modifies and modernizes the public registries system and regulates the Electronic System of Public Registries (SERP) Lei nº 14.382/2022, art. 3º.
- Provimento CNJ nº 149/2023, Book II — Consolidates the National Code of Norms of the National Corregidor's Office of Justice regarding registry and notarial services Provimento CNJ nº 149/2023, Livro II.
- Regulatory note: Lei nº 6.015/1973 (Public Registries Law), art. 110 — Authorizes the administrative rectification of spelling errors by the civil registry official upon presentation of documentary evidence.
- Regulatory note: Lei nº 6.015/1973 (Public Registries Law), arts. 55 and 56 — Allow given name changes directly at the civil registry after reaching civil majority.
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Frequently asked questions
How does paternity acknowledgment work in the civil registry when the father was not present at birth?
The father can go to any civil registrar to voluntarily acknowledge the child. If the father does not appear, the mother can indicate the name and details of the alleged father so that the indication is forwarded to the competent judge or body. To learn more about the procedure, read our article on Paternity acknowledgment in the Civil Registry.
How to request an administrative rectification in the civil registry in case of a spelling error?
Administrative rectification for a spelling error is performed directly at the Civil Registry of Natural Persons via an application supported by documentary proof. The registry officer evaluates the documentation and makes the correction on the certificate itself. See details in Administrative rectification of civil registry records.
When is it possible to change a name in the civil registry directly at the registry office?
Legislation allows changing a given name directly at the registry office after reaching full civil age, without needing a court lawsuit. Surname modifications can also occur due to marriage, divorce, or inclusion of a well-known public alias. Check more details in Given name and surname modification in the Civil Registry.
What happens when the mother appears at the registry office and does not declare who the father of the child is?
The mother has the right not to indicate the alleged father at the time of registration. The birth is recorded with maternal filiation only, preserving the child's right to seek paternity acknowledgment at any time. See more about this act in Birth, death, and filiation registration.
How to change a child's surname and is the signature of both parents required?
To change or add a minor child's surname, the express consent of both parents on the application is required. If there is a disagreement between the parents, the modification requires a judicial decision. Also consult the rules for Recognition of socio-affective filiation.
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Editorial footer
Editorial Team: 5th Notary Office of Recife (5º Tabelionato de Notas do Recife)
Last legal review: October 12, 2026
Version: 1.0
Territorial scope: Federal rule, applicable to all units of the Civil Registry of Natural Persons in Brazil, subject to complementary rules from the State General Corregidor Offices of Justice.
Informative content produced for citizen guidance; does not replace specific legal advice provided for concrete cases.