Why Do I Need to Establish Paternity?

March 2nd, 2026 by Tiffany Hughes

Establishing paternity is an important legal and emotional step for many families. In Illinois, there are specific laws and procedures that govern how a child’s legal father is determined. While every family’s situation is different, establishing paternity provides major legal protections and benefits for both the child and the parents.

Whether you are a mother seeking child support, or a father seeking parenting time and decision-making rights, establishing paternity is often the first step in an Illinois parentage case.

What Does Paternity Mean? 

Paternity refers to the legal recognition of a man as the father of a child. Once paternity is legally established, it creates a binding legal relationship between the father and child—regardless of whether the parents were ever married.

After paternity is established, the father gains enforceable rights and responsibilities under Illinois law. This legal status is essential for determining:

• parenting time (formerly known as “child custody”)
• visitation rights
• allocation of parental responsibilities (decision-making)
• child support obligations

Without legal paternity, a father may have no enforceable rights to parenting time or decision-making, even if he is biologically the child’s father.

What are the Benefits of Establishing Paternity in Illinois? 

1. Financial Support for the Child 

One of the most important benefits of establishing paternity is ensuring the child receives financial support from both parents. Under Illinois law, once paternity is established, the non-residential parent can be required to pay child support.

Child support can help cover expenses such as:

• medical care and health insurance
• daycare and education costs
• clothing, food, and basic living expenses
• extracurricular activities

Establishing paternity is often necessary before the court can enter a child support order.

2. Legal Rights and Responsibilities for Each Parent

Establishing paternity gives both parents legal standing in matters involving the child.

For fathers, this can include the right to petition the court for:

• parenting time
• visitation
• allocation of parental responsibilities
• involvement in major decisions (education, medical care, religion, extracurriculars)

Without established paternity, a father may not have legal authority to participate in decisions about the child’s life.

For mothers, establishing paternity can allow them to pursue:

• child support
• shared parenting responsibilities
• enforceable parenting schedules

3. Access to Family Medical History 

Knowing a child’s full medical history can be extremely important for long-term health. Establishing paternity ensures that a child has access to both sides of their family’s medical history, which can help with:

• diagnosing hereditary conditions
• identifying genetic risks
• planning appropriate medical care

4. Emotional and Psychological Benefits

Beyond legal and financial reasons, establishing paternity can provide emotional security and identity for a child.

Many children benefit from:

• knowing both parents
• developing a sense of stability and belonging
• building strong family connections

For fathers, establishing paternity often strengthens the bond with their child and reinforces their role in the child’s life.

How Do I Establish Paternity in Illinois? 

In Illinois, there are several ways to legally establish paternity, depending on whether the parents agree or whether there is a dispute.

1. Voluntary Acknowledgment  of Paternity (VAP) Form

One of the simplest ways to establish paternity is through a Voluntary Acknowledgment of Paternity (“VAP”) form.

This form is commonly offered at the hospital after the child is born, but it can also be completed later through the appropriate state registrar.

Once properly signed and filed, the VAP has the same legal effect as a court order establishing paternity. In many cases, it avoids the need for litigation simply to confirm the child’s legal father.

2. Court Order

If paternity is disputed or uncertain, either parent may file a petition to establish paternity in court.

In contested cases, the court may order genetic testing to determine biological parentage. Once confirmed, the court can enter a paternity order addressing issues such as:

• parenting time and visitation
• allocation of parental responsibilities
• child support
• health insurance and medical expenses

This process is common when parents were never married, when a father wants formal parenting rights, or when a mother needs a support order.

3. Administrative Paternity Order Through DHFS

In some cases, the Illinois Department of Healthcare and Family Services (“DHFS”) may establish paternity administratively, often when a parent applies for child support services through the state.

Why Paternity Matters in Custody and Visitation Cases

Without legally established paternity, a father generally does not have standing to request parenting time or decision-making rights in Illinois. This can create an unfair situation where one parent holds full legal authority, even if the other parent has been actively involved in the child’s life.

Establishing paternity creates legal recognition and allows both parents to be heard in court regarding the child’s future. It is often the first step in a custody or parenting time dispute.

Establishing Paternity Protects You and Your Child

Establishing paternity is a critical step in protecting parental rights and ensuring that a child receives the financial, emotional, and legal support they deserve.

Whether you are seeking parenting time, visitation, child support, or decision-making rights, Illinois law provides clear pathways to establish paternity through:

• a VAP form
• a court order
• an administrative paternity order

Taking action to establish paternity lays the foundation for stability and ensures both parents can share in the responsibilities and joys of raising their child.

Need More Information or Representation?

If you are trying to establish paternity, want to receive child support, or want to know your rights as a parent, give The Law Office of Tiffany M. Hughes, P.C. a call today at 773-893-0228 for a confidential, complimentary 30-minute phone consultation or email Tiffany Hughes directly at Tiffanyhughes@thugheslaw.com. Our entire practice is solely dedicated to the area of family law. We are highly experienced in representing anyone who is asking why they need to establish paternity, who is seeking to understand what paternity means, who wants to learn what are the benefits of establishing paternity under Illinois law, who is asserting or defending their custody rights, who is seeking to establish or enforce visitation rights, who is completing or contesting a VAP form, who is filing or responding to a petition to establish paternity, who is pursuing or contesting child support obligations, who is a non-custodial parent wanting to protect their relationship with their child, or who is involved in a custody battle and needs skilled legal advocacy to protect their parental rights and promote the best interests of their child.

About Tiffany M. Hughes, Divorce Attorney, Principal, Managing Partner, The Law Office of Tiffany M. Hughes, P.C.:

Tiffany M. Hughes is a divorce attorney and Managing Partner of The Law office of Tiffany M. Hughes. Recognized as a Top 100 Lawyer in Lawyers Magazine in 2018 and 2019, Super Lawyer from 2016 to date, and in addition to numerous other accolades, Ms. Hughes represents individuals in all aspects of family and matrimonial law proceedings, including litigation, mediation, allocation of parental responsibility (formerly known as custody), parentage, divorce and other child-related matters.

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This blog is made available by The Law Office of Tiffany M. Hughes, P.C. for educational purposes only as well as to give you general information and a general understanding of Illinois law, not to provide specific legal advice. By using this website you understand that there is no attorney client relationship between you and The Law Office of Tiffany M. Hughes, P.C. The website should not be used as a substitute for competent legal advice from a licensed professional attorney in Illinois.  The law changes constantly and we do not go back in time to edit old posts that may be affected by these changes.  If you have any questions about Illinois law, which is the only State this blog and website discusses, please call The Law Office of Tiffany M. Hughes, P.C. for a complimentary phone consultation and do not draw any legal conclusions without speaking to a competent attorney in Illinois first.