Direct answer
The DSM-5 classifies autism spectrum disorder into three support levels: Level 1 ("Requiring Support") — noticeable social difficulties, some inflexibility; Level 2 ("Requiring Substantial Support") — marked social deficits, restricted behaviours obvious to casual observers; Level 3 ("Requiring Very Substantial Support") — severe social communication challenges, extreme difficulty with change. In Ontario, all three levels qualify for OAP registration.
Autism support levels describe the amount of support a person needs, not the severity of autism itself. They are assessed across two domains: social communication and restricted/repetitive behaviours. A person can have different levels across these two domains.
Support levels describe current support needs. They can differ over time, settings, and life stages. A child may need less support in one setting and more support during transitions or stressful periods.
All three DSM-5 support levels qualify for OAP registration and core clinical services. The childhood budget amount is not directly determined by support level — it is based on the child's age. However, children with higher support needs (Levels 2-3) may require more intensive therapy programs that utilize the full budget.
APA
DSM-5 Autism Spectrum Disorder Diagnostic Criteria, Section 299.00 (2013)
A comprehensive autism assessment includes developmental history, standardized testing (ADOS-2, ADI-R), cognitive assessment, and clinical observation.
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Commitment to Accuracy: Our data is verified against official government reports (FAO, MCCSS), peer-reviewed scientific literature, and accessible public records. Last updated: March 24, 2026.
How many children are on the Ontario autism waitlist in 2026?
As of May 13, 2026, 91,974 children are registered with the Ontario Autism Program. However, only 20,711 (22.5%) have an active Core Funding Agreement. This represents approximately 290% growth in registrations since 2019, with 71,263 children still waiting for essential funding.
Source: MCCSS FOI via OAC · Mar 2026, FAO Report 2024 · Verify Link
How long do families wait for Ontario autism services?
Ontario autism wait times for core clinical services now exceed 5+ years (2026). Most families currently receiving invitations registered in 2020 or earlier. This delay far exceeds the sensitive early intervention window recommended by developmental specialists.
Source: MCCSS FOI via OAC · Mar 2026, FAO Report 2024 · Verify Link
Is the Ontario Autism Program underfunded?
Yes. The Financial Accountability Office (FAO) determined that $1.35 billion annually is needed to serve all registered children at 2018-19 service levels. The 2026-27 Ontario Budget allocated $965 million, leaving an estimated $385M+ annual shortfall. This gap is the primary driver of the perpetual 91,974+ child waitlist.
Source: Financial Accountability Office of Ontario [FAO] · Verify Link
Written by Spencer Carroll
Founder & Autism Advocate