Ontario Autism Waitlist Statistics & OAP Data (2026)

The Ontario Autism Program (OAP) is the provincial government's primary vehicle for delivering autism services to children under 18. Registration gives a family access to the queue for Core Clinical Funding, a direct payment that can be used to purchase Applied Behaviour Analysis (ABA) therapy, speech-language pathology, occupational therapy, and other evidence-based services.

The gap between "registered" and "funded" is the waitlist. As of March 4, 2026, 69,166 children (77%) have cleared every prerequisite, diagnosis, Determination of Needs assessment, OAP registration, and are still waiting. They are in the queue. Their names are on record. They are simply not being served.

For a breakdown of how these numbers vary by region across Ontario, see the Full regional waitlist breakdown.

How the Waitlist Grew

Before the 2019 OAP redesign, approximately 23,000 children were registered. The 2019 reform changed the program structure, eliminated the former Intensive Behavioural Intervention (IBI) tier, and opened a new Core Funding Agreement pathway intended to reduce wait times. Instead, registrations grew from approximately 23,000 to 89,799 by March 2026, an increase of ~290%.

CBC News, using FOI data covering 18 months of bi-weekly OAP progress reports (June 2024 through January 2026), documented that the waitlist jumped approximately 21% since mid-2024 alone. During one two-week period last summer, the number of funded children dropped by 151 while 456 new children registered, a net addition of over 600 to the unfunded group in a single reporting period.

What "Registered but Unfunded" Means for Families

A child registered with the OAP is not receiving government-funded therapy. Families in this situation face three options: wait indefinitely for a funding agreement, pay privately (ABA therapy typically costs $25,000–$80,000 per year in Ontario), or go without services.

The World Health Organization recommends accessible, affordable community-based early interventions for children with autism. Research consistently shows the highest developmental gains from evidence-based therapy delivered before age five. Ontario's current wait times frequently exceed the entire early-intervention window. OAC FOI Mar 2026 indicates average wait times of 5+ years, with northern Ontario often exceeding six years.

The Funding Gap

Ontario allocated $965M to the OAP in the 2026-27 budget, a significant increase from $571M the prior year. However, the Financial Accountability Office's 2020 analysis estimated $1.35B would be needed annually to serve all eligible children at 2018–19 service levels. That estimate was based on approximately 40,700 children. With 89,799 children now registered, the true cost to eliminate the backlog is substantially higher.

The FAO's 2023–24 Spending Plan Review reported total OAP spending of approximately $600 million for fiscal year 2023–24, serving 10,142 children, roughly $59,200 per child served. At that per-child cost, funding the 69,166 children currently waiting would require approximately $4 billion in additional annual spending.

The Growth Rate Problem

The OAP is enrolling approximately 850 new children per month. The system is adding Core Funding Agreements at a slower rate. The net result is that the registered-but-unfunded population grows by approximately 402 children per month. At current rates, the backlog is projected to reach approximately 73,990 by December 2026 and 78,814 by December 2027.

To simply stop the waitlist from growing, the province would need to issue new Core Funding Agreements at the same rate children register, approximately 850 per month. To eliminate the existing backlog within five years while keeping up with new registrations, the province would need to enrol approximately 2,003 children per month.

What the Official Number Does Not Count

The 89,799 figure counts only children who have completed an autism diagnosis and registered with the OAP. Several groups are not counted:

• Children awaiting diagnosis. Before a child can register with the OAP, they need an autism diagnosis. Ontario does not publish a province-wide diagnostic waitlist. A Freedom of Information request to Trillium Health Partners revealed 6,113 children waiting for diagnosis at just 5 diagnostic hubs in March 2024. The province-wide total is unknown and may be substantially higher.
• Children who aged out. Children who turn 18 are no longer eligible for the OAP. The government does not publish how many children aged out of the waitlist without ever receiving funded services. These children are removed from the registered count without receiving the services they were waiting for.
• Undiagnosed children. The Public Health Agency of Canada reported an autism prevalence of 1 in 50 children (2019). A 2025 Frontiers study found a 2.1% prevalence rate specifically in Ontario. Not all children with autism are diagnosed or registered with the OAP. The number of undiagnosed or unregistered children with autism in Ontario is not tracked.

Primary source (current figures): Ontario Autism Coalition FOI of the Ministry of Children, Community and Social Services (MCCSS) bi-weekly OAP progress reports. The figures on this page use the March 4, 2026 progress report, the most recent column in that series (89,799 registered / 20,633 funded).

Related investigation:A CBC News Toronto Enterprise Unit FOI investigation, published March 30, 2026 (reporters Nicole Brockbank & Angelina King), obtained 18 months of the same bi-weekly OAP progress reports from MCCSS, covering late June 2024 through early January 2026, and reported the January 7, 2026 column (88,175 registered / 20,666 funded). The newer March 4, 2026 column has since been adopted as the canonical figure. Both point to the same structural pattern: the vast majority of registered children are not funded.

Historical baseline: Financial Accountability Office of Ontario, MCCSS Spending Plan Review (2023–24). This report provides the 2023–24 figures used for year-over-year comparison (70,176 registered, 19,966 with core services).

The "real number" debate: Ontario's Ministry of Children, Community and Social Services uses the term "waitlist" to refer to children registered but without funding. Some advocates argue the true affected population is larger because the registered count excludes children awaiting diagnosis and those who aged out. This page presents both the government's own figures and the data limitations, clearly labelled, without imputing motive.

Projections: Monthly growth rate projections are derived from the CBC FOI dataset (mid-2024 to January 2026 average: approximately 850 new registrations per month). Projections assume constant rates and are labelled as estimates. Actual figures may vary based on program policy changes, funding announcements, and registration patterns.