This is the conversation nobody wants to have, but starting early makes all the difference. On your child's 18th birthday, OAP funding stops. What comes next is a patchwork of programs with longer waitlists and smaller budgets.
Last updated: June 2026
What happens after 18
The waitlist doesn't end when childhood does.
Registered
89,799Children registered
Total in the Ontario Autism Program queue
MCCSS FOI · Mar 2026
Funded
20,633Have active funding
Only 23% of registered children
MCCSS FOI · Mar 2026
Waiting
69,166Still waiting
Registered. Diagnosed. Un-funded.
MCCSS FOI · Mar 2026
Verified , MCCSS FOI · Mar 2026
| Metric | Value |
|---|---|
| Children registered | 89,799 |
| Have active funding | 20,633 |
| Still waiting | 69,166 |
OAP funding, up to $65,000 per year for Core Clinical Services (range: $6,600–$65,000depending on age and support level), ends when your child turns 18. There is no phase-out, no transition period, and no automatic enrollment in adult programs. The Passport program, Ontario's primary adult disability funding, provides a fraction of that amount.
Annual Core Clinical Services range (by age and support level)
Annual Passport program funding range (approx.)
The gap is enormous. A family receiving $65,000/year in OAP Core Clinical Services may drop to as little as $5,500/year in Passport funding — a reduction of over 90% — with no clinical therapy covered at all. For families who waited 5+ years (OAC FOI analysis) on the OAP waitlist and only recently began receiving services, the loss is compounded.
Transition planning should begin no later than age 16. The earlier you start, the smaller the service gap your child will experience. Here is what to do and when.
DSO is the single point of access for adult developmental services in Ontario. Contact your regional DSO office to begin the intake process. You will need a qualifying diagnosis and supporting documentation. Find your local DSO at dsontario.ca or call 1-855-376-3737.
Ontario Disability Support Program applications can be submitted at age 17. Apply early, processing takes months. ODSP provides up to $1,408/month for a single person (basic needs + shelter, July 2025 rates). You will need medical documentation confirming the disability. Apply through your local ODSP office.
Request a formal transition meeting with your child's current OAP service providers, school transition team, and any adult services already involved. Document your child's current needs, goals, and the services they will require as an adult.
Research Passport-funded agencies in your area, supported employment programs, and post-secondary disability services (if applicable). Visit programs in person. Ask about their waitlists, many adult programs have multi-year waits.
OAP funding stops. Your child's clinical team may no longer be available. If Passport funding has not yet started (which is common), there is a service gap. ODSP payments should begin if you applied early enough. Your role as advocate does not end, it intensifies.
Ontario's primary funding for adults with developmental disabilities. Covers community participation, respite, and person-directed planning. Does NOT cover clinical therapy (ABA, speech, OT).
Eligibility: Must be 18+, have a qualifying developmental disability, and be registered with DSO.
Monthly income support for adults with disabilities who meet financial eligibility criteria. Covers basic living costs. Can be combined with Passport and part-time employment.
Eligibility: Must be 18+, have a qualifying disability, meet income/asset tests. Apply at age 17.
Federal supplement for working-age adults with disabilities. Launched 2025. Must have a valid Disability Tax Credit certificate.
Eligibility: Ages 18-64, must hold a valid DTC. Income-tested.
Job coaching, skills training, and supported placements for autistic adults. Available through community agencies funded by MCCSS. Quality and availability vary significantly by region.
Eligibility: Must be registered with DSO. Must be 18+.
Even families who plan ahead experience a service interruption at 18. The gap between OAP ending and adult programs starting can last months or years. During this time, everything your child has gained is at risk.
Clinical therapy stops. There is no adult equivalent of OAP Core Clinical Services. Skills developed through years of ABA or speech therapy may regress without continued support.
Your child's clinical team, the BCBA, speech therapist, OT who know your child, may not serve adults. You start over with new providers who do not know your child's history.
Passport and other adult programs have their own multi-year waitlists. A family that waited 5+ years (OAC FOI analysis) for OAP may face another multi-year wait for Passport funding.
“We are setting kids up to be adults who depend on a system that has already failed them as children.”
— Ontario disability advocate
The consequences of the OAP waitlist do not end at 18. Adults who missed early intervention face a lifetime of compounding challenges that could have been mitigated with timely support.
Unemployment rate among autistic adults in Ontario
Without supported employment and skills development during the transition years, most autistic adults struggle to enter and maintain employment.
Experience a co-occurring mental health condition
Anxiety, depression, and other mental health conditions are significantly more common in autistic adults who did not receive adequate early support.
Estimated lifetime support cost without early intervention
Research shows that adults who missed early intervention require significantly more expensive lifetime supports than those who received timely services.
Independence without adequate transition support
Many autistic adults who missed early intervention live with aging parents well into adulthood, with no plan for when parents can no longer provide care.
This is the systemic concern: underfunding children's services today, then pays far more for adult supports, crisis services, and institutional care tomorrow. Early intervention is not just better for children, it is fiscally responsible.
The earlier you begin, the smaller the service gap. Connect with DSO, apply for ODSP, and explore adult programs well before your child turns 18.
How many children are on the Ontario autism waitlist in 2026?
As of March 4, 2026, 89,799 children are registered with the Ontario Autism Program. However, only 20,633 (23%) have an active Core Funding Agreement. This represents approximately 290% growth in registrations since 2019, with 69,166 children still waiting for essential funding.
Source: OAC FOI 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 89,799+ child waitlist.
Source: Financial Accountability Office of Ontario [FAO] · Verify Link
Written by Spencer Carroll
Founder & Autism Advocate
Evidence on this page
Key claims are paired with their source, evidence tier, and verification date so readers can inspect the public record directly.
89,799
children are registered in the Ontario Autism Program
US$2.4M
Lifetime support costs for autism with co-occurring intellectual disability can reach US$2.4 million per person (Buescher et al.)
1 in 50
According to the 2019 Canadian Health Survey on Children and Youth, about 1 in 50 children and youth aged 1 to 17 in Canada had an autism diagnosis
23%
Only 20,633 children have active funding agreements (23%) — less than one in four
WHO recommends accessible, community-based early interventions for children with autism — timely evidence-based psychosocial interventions improve communication and social engagement