Paternity testing

Family Law
Jun 16 2025
What is a paternity test?

A paternity test is a DNA test used to determine whether a man is the biological father of a child. Paternity tests can play an important role in establishing legal parentage, and can be required to resolve disputes over child custody, child support, or inheritance claims. The results can be used in court to establish or disprove a biological relationship.

What is a paternity order?

A paternity order is a Family Court order used to legally establish whether a man is the father of a child. A paternity order can also declare that a man is not the father of a child.

Birth certificates require that both parents register their child’s birth. Where both parents are recorded on a child’s birth registration, establishing paternity is generally more straightforward. If the father refuses to sign the birth certificate, you may choose to apply for a paternity order.

Generally, a paternity order can only be sought by the mother of the child or someone acting on her behalf (such as a lawyer). The application for a paternity order must be done before the child turns six. Exceptions to this age limit include if the man believed to be the father has:

  • Previously acknowledged paternity
  • Paid maintenance
  • Lived with the mother within the two years prior to the application
What is a declaration of paternity?

If there is a dispute over a child’s paternity, the mother, alleged father, child, or any affected person can apply to the Family Court or High Court for a declaration of paternity, even if the alleged father or child is deceased. A person might request a declaration of paternity to establish a child’s right to inherit from the alleged father.

A declaration of paternity provides conclusive legal proof of parentage, meaning that it can’t be challenged. There is no time limit on applications for declarations of paternity.

What happens if someone refuses a paternity test?

If a person refuses to take a paternity test, the court may draw its own conclusions based on the available evidence. This ensures that the child’s best interests are prioritised and that legal responsibilities (such as child support) are appropriately assigned.

What evidence does the Court consider?

The Court looks at a range of factors:

  • The history of the relationship between the mother and the alleged father and whether the relationship was known to anyone else.
  • When and how the child was conceived.
  • Medical evidence about the birth.
  • Whether the man has admitted to sexual intercourse with the mother or admitted at any time he was the father.
  • Whether the mother had sexual intercourse with any other man around the time of the child’s conception (to find out whether anyone else could be the child’s father).

The Court frequently relies on DNA testing to determine paternity. These tests involve collecting blood or mouth swab samples from the alleged father, mother, and child. While the man can refuse the test, the court may consider this refusal in its decision.

You can talk to our family law team today about paternity testing and what it might mean for you and your family.

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