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What Are the Child Custody (Decision-Making Responsibility) Rights of Unmarried Parents in Ontario?

Published: July 3, 2026

Last Updated: July 3, 2026

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What Are the Child Custody (Decision-Making Responsibility) Rights of Unmarried Parents in Ontario?

Many parents assume that being unmarried affects their parental rights. However, in Ontario, the law generally focuses on the best interests of the child rather than the parents’ marital status. Whether parents were married, in a common law relationship, or never lived together, both may have important rights and responsibilities regarding their child.

Following a separation, questions arise about who will make important decisions for the child, where the child will live, how parenting time will be shared, and whether child support will be paid. Understanding how Ontario family law addresses these issues can help parents make informed decisions and reduce conflict during an already challenging time.

In this blog, we discuss the parenting rights and responsibilities of unmarried parents in Ontario, including decision-making responsibility, parenting time, child support obligations, parentage, and the factors courts consider when determining what arrangements are in a child’s best interests. If you have questions about your rights as an unmarried parent in Ontario, contact our Toronto child custody and access lawyers today.

Do Unmarried Parents Have the Same Rights as Married Parents?

Unmarried parents generally have the same rights and responsibilities as married parents when it comes to their children. Once parentage is established, both parents may seek parenting time and decision-making responsibility (formerly referred to as custody) for their child.  Any parenting arrangement must ultimately be based on the child’s best interests.

As a result, unmarried parents generally have the same ability as married parents to:

Understanding Decision-Making Responsibility and Parenting Time

When discussing child custody, it is important to understand the terminology used in modern family law. Under the Divorce Act, the terms “custody” and “access” have largely been replaced by decision-making responsibility and parenting time.

Decision-Making Responsibility

Decision-making responsibility refers to the authority to make important decisions about a child’s upbringing and well-being. These decisions may relate to:

  • Health care;
  • Education;
  • Religion, culture, language, and spirituality; and
  • Significant extracurricular activities.

Depending on the family’s circumstances, one parent may have sole decision-making responsibility, both parents may share joint decision-making responsibility, or responsibility for certain decisions may be divided between the parents.

Parenting Time

Parenting time refers to the time a child spends in the care of a parent. A parent with parenting time is responsible for day-to-day decisions affecting the child while the child is in their care.

Parenting time arrangements vary from family to family. In some cases, a child may primarily reside with one parent while spending scheduled time with the other. In other situations, parenting time may be shared more equally between both parents.

Who Has Rights When Parents Were Never Married?

When parents have never married, both parents may still have legal rights and obligations toward their child.

In Ontario, parentage may be established in several ways, including:

Once parentage is recognized, each parent may seek parenting rights and may also have financial obligations toward the child.

The law does not automatically grant one parent permanent control over parenting decisions simply because the parents were never married.

How Is Parentage Established?

In many cases, parentage is straightforward and not disputed. However, if there is uncertainty regarding a person’s legal status as a parent, parentage may be established through:

  • Birth Registration: a parent listed on the child’s birth registration will generally be recognized as a legal parent.
  • Voluntary Acknowledgement: parents may acknowledge parentage without requiring court involvement.
  • DNA Testing: where parentage is disputed, DNA testing may be used as evidence.
  • Court Declaration: a court may issue a declaration of parentage when necessary to resolve disputes.

Formally establishing parentage can be important because it can help ensure that both parents’ rights and responsibilities are recognized under the law.

Once parentage is established, a parent may be able to seek parenting time and decision-making responsibility, participate in important decisions affecting the child, and access information relating to the child’s health, education, and well-being. Establishing parentage may also affect child support obligations, inheritance rights, and other legal matters involving the child.

Most importantly, establishing parentage helps provide clarity and stability for children by ensuring that their legal relationship with each parent is properly recognized.

How Do Courts Decide Parenting Arrangements?

When parents separate, they may be able to reach an agreement regarding decision-making responsibility, parenting time, and child support. Where an agreement is reached, it is strongly recommended that it be documented in a legally enforceable separation agreement or parenting plan to provide clarity and reduce the risk of future disputes.

When parents cannot agree, the court’s primary consideration is always the best interests of the child. The court may consider factors such as:

  • The child’s needs and circumstances;
  • The child’s relationship with each parent;
  • Each parent’s willingness to support the child’s relationship with the other parent;
  • The child’s views and preferences, depending on age and maturity;
  • The history of care provided by each parent;
  • The stability of the child’s living arrangements;
  • Any history of family violence;
  • Each parent’s ability to meet the child’s needs; and
  • Any existing parenting plan.

The court does not automatically favour mothers or fathers. The focus remains on what arrangement best promotes the child’s physical, emotional, and psychological well-being.

Can One Parent Prevent the Other Parent from Seeing the Child?

In most cases, a parent cannot unilaterally prevent the other parent from having a relationship with their child. Unless there are safety concerns, concerns regarding the child’s well-being, or a court order restricting contact, Ontario family law recognizes the importance of children maintaining meaningful relationships with both parents.

If one parent unreasonably denies parenting time or refuses to allow contact, the other parent may seek assistance from the court.

However, there may be situations where restrictions are appropriate, including cases involving:

  • Family violence;
  • Abuse;
  • Neglect;
  • Substance abuse concerns; or
  • Serious risks to the child’s safety.

Each matter is determined on a case-by-case basis, having regard to the particular facts and circumstances involved.

Child Support Obligations for Unmarried Parents

A parent’s obligation to support their child does not depend on whether the parents were married. Both parents are responsible for financially supporting their children. When parents separate, child support is commonly determined using the Provincial Child Support Guidelines.

The amount payable may depend on factors such as:

  • Income;
  • Parenting arrangements;
  • The number of children;
  • Special or extraordinary expenses; and
  • The province of residence.

Parents cannot generally avoid child support obligations simply because they were never married or because they have limited involvement in the child’s life. Child support is considered the right of the child, not the parent, and is intended to help meet the child’s ongoing needs. If you encounter issues paying or obtaining child support after separating from a co-parent, our Toronto child support lawyers may be able to help you understand your rights and obligations.

Resolving Parenting Issues After Separation

Parenting Agreements

Whenever possible, parents should attempt to reach an agreement regarding parenting arrangements without court intervention. A comprehensive parenting agreement, sometimes referred to as a parenting plan, can address matters such as:

  • Decision-making responsibility;
  • Parenting time schedules;
  • Holidays and vacations; 
  • Communication with the child;
  • Transportation arrangements;
  • Child support; and
  • Processes for resolving future disagreements.

A well-drafted agreement can provide clarity, reduce conflict, and promote stability for both parents and children.

Relocation and Other Important Considerations

Parents should also be mindful of issues that may affect existing parenting arrangements. For example, a proposed relocation may impact the child’s relationship with the other parent and require further discussion or legal intervention. When determining parenting arrangements, the child’s best interests remain the primary consideration.

Maintaining effective communication and focusing on the child’s needs can often help parents address issues before they develop into more significant disputes.

When Court Intervention May Be Necessary

Although many parents are able to reach an agreement, court involvement may be necessary in certain circumstances, including where:

  • Parents cannot agree on parenting issues;
  • One parent refuses to cooperate;
  • Safety concerns exist;
  • Parentage is disputed; or
  • Existing arrangements are no longer working.

In these situations, the court may issue parenting orders addressing decision-making responsibility, parenting time, and other issues affecting the child. Any order made by the court will be guided by the child’s best interests.

Speak With an Experienced Family Lawyer at Gelman and Associates Regarding Decision-Making Responsibility Rights of Unmarried Parents in Ontario

Parenting disputes involving unmarried parents can be legally and emotionally complex. Obtaining legal advice early can help you understand your rights and responsibilities, negotiate workable parenting arrangements, and protect your child’s best interests.

If you have questions about decision-making responsibility, parenting time, child support, or any other parenting-related issue, our experienced Toronto family lawyers at Gelman and Associates can provide clear guidance and help you work toward a resolution that supports your child’s well-being and your family’s future.

Written by Lisa Gelman

Senior Lawyer

Senior Lawyer Lisa Gelman has over 25 years of family law experience and founded Gelman & Associates to provide strategic legal counsel in family law matters concerning divorce, parenting, separation, and more.

Frequently Asked Questions - child custody & access

Ontario law does not specify the age at which a child can decide which parent to live with. At most, the Court may consider the preference of the child but that does not necessarily mean that the Court will act favorably on it. The court will consider the child’s maturity, ability to articulate their desires, and the reasoning behind their views when seeking their opinion.

If a parenting plan is included in your court order under the Divorce Act, the document will be legally binding.

In order to change your child’s last name, you will have to be the child’s parent with legal custody or be the legal guardian of the child. In order to change the child’s last name, you will have to provide notice to anyone who has legal access to the child, and that may include your ex-spouse.

In most cases, the answer is no. However, there can be some exceptions that the mother can build a case upon. These include the father putting the child at risk, non-compliance with the court order, or a history of violence by the father.

Creating a custody plan with a narcissistic ex-partner is a task best left to legal professionals. While there might not be one way to deal with a narcissistic ex, there are things that you can do to turn the tables on a narcissistic co-parent. The best way to prevent problems is to go with no contact or limited contact with your ex-partner and put everything in writing if you must only communicate via email or text message to record statements and harassment.

Let us consider that the “moving away” is relocation and not just a change in residency.

Then, let us qualify that the mother will take your child with her.

If the mother is the primary caregiver of the child, you may oppose the relocation by applying the principles laid down under the Gordon vs. Goertz case. You must present your case strongly as to why potentially cutting your child’s relationship as the primary caregiver is to your child’s best interest. This situation falls under the purview of Section 16.93(2) of the Divorce Act.

If both you and the mother have equal parenting time over your child, the mother of the child has the burden of proof as to why the relocation is for the best interest of your child. This situation falls under the purview of Section 16.93(1) of the Divorce Act.

If there is no Court ordered, approved, or awarded parenting time or separation agreement, as contemplated under Section 16.93(3) of the Divorce Act, the mother has the burden of proof to show that relocation is in the best interest of your child.

Note that even if the burden of proof is not laid upon you, it still recommended that you present a strong opposition to the relocation.

Yes, it is possible for your ex to prevent you from relocating with a child you share, although this will likely plan on your parenting arrangements and decision-making responsibility. If you cannot agree about a relocation, a court will decide based on the child’s best interests.

Generally, you need to provide your ex with 60 days’ written notice of your relocation plan, and you must obtain consent or a court order to move the child. A lawyer can help you navigate this process. Our divorce lawyers will guide you through the application and court order process.

Yes, but they will need to establish paternity, especially if the father and the mother separate. Here are the ways to establish paternity as recognized by the court:

  • Act of birth
  • Presumption of paternity
  • Uninterrupted possession of status
  • Voluntary declaration

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