How Long Must Child Support Be Paid in Ontario?

07/23/2026 | The Cahill Firm |

Many parents assume that child support automatically ends when a child turns 18. In Ontario, that is not always the case. Depending on the child’s circumstances, support may continue well into adulthood.

Turning 18 Does Not Automatically End Child Support

Under Ontario law, parents generally have an obligation to support a child who is unable to become financially independent because they are pursuing their education or are unable to withdraw from parental care for another valid reason. Age alone does not determine whether child support continues.

What Happens If a Child Goes to College or University?

Many children continue to receive support while attending post-secondary school. Courts look at the child’s overall circumstances, including whether they:

  • Remain financially dependent on a parent;
  • Continue to pursue their education in a meaningful way; and
  • Are working toward becoming self-sufficient.

A child does not have to follow a perfect educational path to remain entitled to support. Temporary delays between high school and college, upgrading courses, or taking prerequisite classes do not necessarily end a parent’s support obligation.

Does Working Mean Child Support Ends?

Not necessarily. Many students work part-time while attending school or saving for future education. Courts recognize that earning some income does not automatically make a child financially independent.

The key question is whether the child has become capable of supporting themselves without relying on their parents.

When Does Child Support Usually End?

Every family is different, but child support will generally end once a child has completed their education and has become genuinely financially independent. If a child abandons their educational plans without a reasonable explanation or becomes self-supporting, support may no longer be required.

How The Cahill Firm Can Help

Questions about adult child support can be complex, particularly when a child is attending college or university, taking a gap between programs, or working while pursuing their education. If you have questions about whether child support should continue or end, The Cahill Firm can help you understand your rights and obligations under Ontario family law.