When people think about divorce, much of the focus is on parenting arrangements and child support for younger children. But what happens when your children are already over 18?
Many parents are surprised to learn that turning 18 does not automatically end all financial obligations.
Are Adult Children Still Considered “Children” Under the Law?
In Ontario, a child over the age of 18 may still be considered a “child of the marriage” under the Divorce Act if they are unable to withdraw from their parents’ care.
This can include situations where a child is:
- Enrolled in post-secondary education (such as college or university)
- Living at home while continuing their education
- Dependent due to illness, disability, or other circumstances
In these cases, financial support obligations may continue even after the child reaches adulthood.
Do You Still Have to Pay Child Support?
Potentially, yes.
If an adult child remains dependent — for example, while attending university — child support may continue. However, the structure of support may change depending on the circumstances.
Courts may consider factors such as:
- Whether the child is enrolled full-time in school
- The child’s ability to contribute financially (e.g., part-time work, scholarships)
- Living arrangements (at home vs. away at school)
- The parents’ financial situations
Support is often adjusted to reflect the child’s evolving independence.
What About University or Post-Secondary Expenses?
In addition to basic child support, parents may be required to contribute to post-secondary education costs, which can include:
- Tuition
- Books and supplies
- Residence or housing costs
- Transportation
These expenses are often treated as shared costs between parents, and sometimes the child is also expected to contribute.
The approach is typically fact-specific and aims to balance fairness between all parties.
Does Parenting Time Still Matter?
For adult children, traditional parenting schedules no longer apply in the same way.
However, living arrangements can still influence financial obligations. For example:
- A child living primarily with one parent may still create financial responsibilities for the other
- A child living away at school may change how support is calculated
The focus shifts from structured parenting time to practical support and financial responsibility.
What Does This Mean for the Child?
For adult children, divorce can still have an impact — but it is often different from that experienced by younger children.
They may:
- Have more independence in their relationship with each parent
- Be consulted about education and living arrangements
- Be expected to contribute to their own expenses where appropriate
At the same time, the law recognizes that many young adults are still transitioning to financial independence.
Frequently Asked Questions
No. Support may continue if the child remains dependent, such as while attending post-secondary education.
Not necessarily. Many students living away at school may still be considered dependent.
Often, yes. Courts may expect adult children to contribute through savings, part-time work, or student loans.
Yes. Many families reach agreements on ongoing support and education costs without litigation.
Key Takeaways
- Turning 18 does not automatically end child support obligations.
- Adult children may still qualify as “children of the marriage” if they remain dependent.
- Post-secondary education costs are often shared between parents, and sometimes the child.
- Financial arrangements may evolve as the child becomes more independent.
Understanding how the law treats adult children can help parents plan effectively and support their children through this transitional stage.
