Paternity

Proving paternity

How do you prove paternity?

Status of Children Act 1969, ss 5, 8

Paternity can be presumed, recognised or proven in the following ways:

  • if a man is married to the child’s mother (or was married to child’s mother and the marriage ended within the 10 months before the child was born), there is a “legal presumption” that he is the father, meaning the court assumes this to be true
  • if a man is named on the child’s birth certificate as the father of the child
  • if the mother and a man sign an Acknowledgement of Paternity
  • if a court makes a Paternity Order stating that a man is the father of a child
  • if the Family Court or the High Court makes a declaration of paternity that says that a man is the father of a child.

Note:  A declaration of paternity is the only way of conclusively proving paternity. This means that the other methods of proving paternity can be challenged in court.

Husband presumed to be the child’s father

Status of Children Act 1969, s 5

When there’s no evidence pointing otherwise, a man is presumed to be the father of a child if:

  • he was married to the child’s mother at the time of the child’s birth, or
  • the child was born within 10 months of the marriage ending.

The mother can take the matter to court if she wants to prove this man is not the father of the child.

If a man is not married to the child’s mother, but is in a de facto or civil union relationship with her, paternity has to be proven in one of the other ways explained below.

How is a father named on a child’s birth certificate?

Births, Deaths, Marriages, and Relationships Registration Act 2021, ss 12, 20

Generally, both parents of a child must notify the Registrar-General of Births, Deaths and Marriages of a child’s birth. However, notification of the birth may be given by one parent if:

  • the other parent is dead, missing, unknown, not of sound mind, or unable to do so because of a medical condition,
  • jointly giving notification of the birth would cause unnecessary distress to either of the parents,
  • the other parent is overseas and cannot be contacted within a reasonable time, or
  • the mother had the child alone using assisted reproductive technology.

The Registrar must include the information about both parents who sign the birth registration form on the child’s birth certificate.

The Registrar must include information about a parent who did not sign the birth registration form if:

  • the Registrar is satisfied the information entered by the parent who notified the birth in fact relates to the child’s other parent; or
  • the information relates to the child’s father and the man has either been:
    • declared by the Family Court or High Court to be the child’s father,
    • declared to be the child’s father in a Paternity Order made by the Family Court, or
    • appointed or declared a guardian of the child under section 19 or 20 the Care of Children Act; or
  • a person has requested that the information be included and the Registrar-General is satisfied that the person making the request is a parent of the child and/or that the other parent does not dispute the information’s accuracy.

Acknowledgement of paternity

Status of Children Act 1969, s 8(2)

A man can sign an “Acknowledgement of Paternity,” saying that he is the father of the child. The acknowledgement must also be signed by the mother and signed and witnessed by a lawyer. This document is called a “Deed of Acknowledgement of Paternity”.

Next Section | Paternity orders

Did this answer your question?

Parents, guardians and caregivers

Where to go for more support

Community Law

Your local Community Law Centre can provide you with free initial legal advice.

Find your local Community Law Centre online: communitylaw.org.nz/our-law-centres

Access the free “Pregnancy Rights: Your legal options before and after pregnancy” booklet here. This booklet contains practical answers to questions about pregnancy and the law, and includes information on sexual health and consent, options after a positive pregnancy test, healthcare, education, housing and more.
Email for a hard copy: publications@wclc.org.nz
Phone: Community Law Wellington and Hutt Valley – 04 499 2928

Family Court

The Family Court website covers many topics discussed in this chapter, including how the family court works, care of children, adoption and paternity.

Website: www.justice.govt.nz/family

New Zealand Law Society

The Law Society has helpful information on what happens with children when parents separate.

Website: www.lawsociety.org.nz/for-the-public/common-legal-issues/what-happens-to-your-children-when-you-part

Inland Revenue

Inland Revenue’s Child Support webpage has a wide range of forms and guides for parents and caregivers.

Website: www.ird.govt.nz/topics/child-support
Phone: 0800 221 221

Aotearoa New Zealand Association of Supervised Contact Services (ANZASCS)

The ANZASCS website has information about supervised contact and lists contact details for approved providers of supervised contact services.

Website: www.anzascs.org.nz

Alternative Dispute Resolution

There are many kinds of “alternative dispute resolution” that, depending on your personal situation, may be cheaper and more successful than going to the Family Court. These include counselling, mediation and negotiation. The following list is not exhaustive:

Resolution Institute: www.resolution.institute
Arbitrators’ and Mediators’ Institute of New Zealand Inc (AMINZ): www.aminz.org.nz

Family Dispute Resolution Centre: www.fdrc.co.nz
FairWay: www.fairwayresolution.com
Family Works: www.familyworkscentral.org.nz

Oranga Tamariki/Ministry for Children

Oranga Tamariki’s website has information about the adoption process.

Website: www.orangatamariki.govt.nz/adoption/adopting-in-nz
Phone: 0508 326 459

Department of Internal Affairs

The DIA website has information on how to obtain original birth certificates for adopted children.

Website: www.govt.nz/browse/family-and-whanau/adoption-and-fostering/finding-your-birth-parents

Registering your child’s birth

The Smartstart website allows you to register your baby’s birth online.

Website: www.smartstart.services.govt.nz/register-my-baby

Also available as a book

Help the manual

We’re a small team that relies on the generosity of all our supporters. You can make a one-off donation or become a supporter by sponsoring the Manual for a community organisation near you. Every contribution helps us to continue updating and improving our legal information, year after year.

Donate Become a Supporter

Find the Answer to your Legal Question

back to top