When Does Child Support End in Ontario? A Fall 2026 Guide for Parents of University Students

A child's 18th birthday does not automatically end child support in Ontario. Starting university, moving into residence or taking a part-time job may change the questions parents need to answer, but those events do not settle the issue on their own.

This fall also marks one year since the updated Federal Child Support Tables took effect on October 1, 2025. For separated parents reviewing university bills and household budgets, it is a useful time to check both the child's continuing entitlement and the amount payable. The anniversary does not itself change an existing order. Justice Canada's table-update FAQ explains the change and its effect on existing orders.

Does child support stop at 18?

Under section 31 of Ontario's Family Law Act, a parent who is capable of providing support has an obligation toward an unmarried child who is a minor, enrolled in a full-time education program, or unable because of illness, disability or another cause to withdraw from parental care. The Act also contains an exception for a child aged 16 or older who has withdrawn from parental control. Read section 31.

For proceedings under the Divorce Act, the definition of a “child of the marriage” includes some adult children who remain dependent because of illness, disability or another cause. The applicable legal framework matters; a lawyer can identify which legislation governs your situation. Divorce Act, section 2.

Parents should therefore assess the child's circumstances and the existing documents before treating a birthday as the end of support.

What happens when a child goes to university?

Full-time education is expressly recognized in Ontario's legislation. However, continuing entitlement and the appropriate payment amount are separate questions.

For an eligible adult child, section 3(2) of the Federal Child Support Guidelines permits the usual guideline approach or, if that approach is inappropriate, an amount based on the child's circumstances and each parent's financial ability. Ontario's guidelines contain a corresponding adult-child provision. A move to residence deserves a review of the actual budget rather than an assumption that the old payment must continue unchanged or disappear. Federal Guidelines, section 3; Ontario Guidelines, section 3.

Who pays tuition and other education costs?

Post-secondary education expenses fall within section 7 of the guidelines. The assessment considers necessity and reasonableness. The guiding principle is proportional sharing based on parental incomes after deducting the child's contribution; relevant subsidies, benefits and tax deductions or credits must also be considered. It is not automatically a 50/50 split. Ontario Guidelines, section 7.

A practical discussion should start with a written budget. Identify tuition, required materials, housing and other proposed costs, together with scholarships, available funding and the student's contribution. Explain which costs are already included elsewhere in the support arrangement so the same expense is not counted twice.

Which child support tables apply in 2026?

Justice Canada's updated tables apply when calculating support for periods from October 1, 2025 onward. The earlier tables remain relevant to earlier periods. An online lookup helps estimate the basic amount, but it does not decide whether an adult child remains eligible or resolve education expenses.

The updated amounts did not automatically replace amounts in orders made before October 1, 2025. Parents may need a court variation or an eligible recalculation process. Use the official 2025 table lookup alongside the existing order and current financial information.

Can I stop paying if I believe support should end?

Review the order or separation agreement first. It may specify a date, a terminating event or a process for reviewing support.

Where the Family Responsibility Office is enforcing support, Ontario advises payors generally to continue until FRO confirms in writing that they can stop. A dispute about a terminating event may require a court decision. Ending ongoing support also does not erase arrears. Ontario's FRO guidance explains the enforcement process.

Raising the issue early, with supporting documents, gives both parents a clearer basis for resolving it.

What should parents gather before a support review?

Bring the existing order and agreements, recent income information, proof of enrolment, an education budget, funding information and relevant correspondence. Note the specific change you want reviewed: entitlement, monthly payments, education expenses or the proposed end date.

Woodstone Law assists Ontario families with child support and separation agreements. Our family law team can review the documents and explain the appropriate next steps. Book a consultation to discuss your circumstances.

This article provides general Ontario legal information, not legal advice. Reading it does not create a lawyer-client relationship. Entitlement, amounts and procedures depend on the facts and applicable law.