Before joining the OAP waitlist, Ontario diagnostic waitlists average **12–24 months** at public hospitals. [OAP] This pre-waitlist delay means total time from first concern to therapy often exceeds **5–7 years**, an invisible bottleneck in official statistics.

Source: Ontario Autism Program [OAP]

To apply for the OAP, a child must have a documented autism diagnosis (ASD) from a qualified professional. Parents register through AccessOAP (administered by Autism Ontario). Registration is age-ordered — children are invited to funding based on their registration date, not clinical need. There is no way to expedite placement based on severity.

Source: Ontario.ca OAP Guide / AccessOAP

As of January 2026, **88,175 children are registered with the Ontario Autism Program**. [FOI] However, only **20,666 (23.4%)** have an active Core Funding Agreement. This represents approximately 280% growth in the waitlist since 2019, with over 67,000 children still waiting for essential funding.

Source: CBC FOI Jan 2026, FAO Report 2024

The human cost of Ontario autism wait times is significant. Every month a child waits is time they cannot get back in terms of early development. The clock is always ticking, and the vast majority of autistic children in Ontario are waiting during the sensitive developmental period when intervention is most effective.

Source: WHO Fact Sheet: Autism Spectrum Disorders (2023); FAO Report 2023-24

Public autism assessments in Ontario are free through OHIP but have 12-24 month waits. Private assessments cost $2,000-$4,000 with 2-4 month wait times. Psychological associates typically charge less than registered psychologists. Virtual assessments may cost $1,500-$2,500.

Source: Ontario Psychological Association

In Ontario, autism can be diagnosed by: registered psychologists, psychological associates, developmental pediatricians, pediatricians with autism training, psychiatrists, and neurologists. Assessments must follow DSM-5 criteria. OAP accepts diagnoses from any qualified professional meeting ministry criteria.

Source: College of Psychologists of Ontario