Aging Out of OAP: What Happens When Your Child Turns 18 in Ontario

OAP Core Clinical Services funding ends when a young person turns 18. There is no gradual phase-out, funding stops on the birthday. Families should begin transition planning at least 12-18 months before the 18th birthday to minimize the service gap. Some families report being able to complete a current treatment block, but no new OAP funding is issued after age 18.

To apply for adult developmental services, contact Developmental Services Ontario (DSO) in your region at least 12-18 months before your child turns 18. DSO is the gateway to adult services including Passport funding, supported living, and community participation. You will need a qualifying diagnosis and a needs assessment. Find your regional DSO at dsontario.ca or call 1-855-376-3737.

No. OAP is a children's program (under 18) and ODSP is an adult program (18+). They do not overlap. However, families should apply for ODSP several months before the child's 18th birthday so that payments begin as close to the transition date as possible. ODSP applications can be submitted at age 17.

Adult autism services in Ontario are significantly less funded than children's services. Passport funding is needs-based; ask your Passport agency about current amounts. Families may need to supplement with private payment, access university disability services if applicable, or connect with community agencies that serve autistic adults. There is no equivalent to OAP Core Clinical Services for adults in Ontario.

Passport is Ontario's primary funding program for adults with developmental disabilities. Funding is needs-based; ask your Passport agency about current amounts. It supports community participation, person-directed planning, caregiver respite, and skill development. Passport does NOT fund clinical therapy such as ABA. Passport has its own waitlist, and many families experience a gap between OAP ending at 18 and Passport funding beginning. OAP Core Clinical Services funding ($6,600–$65,000 per year by age and support level) provides clinical therapy; this support does not carry forward to adulthood.

OAP eligibility ends at age 18. Children who turn 18 while still on the OAP waitlist generally do not receive Core Clinical Funding through OAP after that birthday. In some cases, AccessOAP issues an interim or one-time funding amount for 17-year-olds before the cutoff. The most important step is to apply for ODSP and Passport Funding 12-18 months before the 18th birthday so that adult supports are in place when OAP eligibility ends.

Plan in parallel: (1) Continue to follow up on OAP, your child is still entitled to whatever funding the OAP issues before age 18; (2) Apply for SSAH and ACSD now if not already on them; (3) Apply for the federal Disability Tax Credit (~6-12 weeks to process, opens RDSP and Child Disability Benefit); (4) At age 16-17, register with Developmental Services Ontario and begin the Passport application; (5) At age 17, submit ODSP application so payments can begin shortly after the 18th birthday. Document the OAP wait in case it becomes relevant for HRTO or Ombudsman complaints.

Adult services rarely begin the day OAP ends. Realistic planning: (1) 18 months out, register with DSO; (2) 12 months out, submit ODSP application; (3) 6 months out, request Passport assessment; (4) 3 months out, finalize transition plans for any current OAP-funded providers. Even with this timeline, some service gap is common because Passport waitlists run multi-year in many regions. The federal Disability Tax Credit and Child Disability Benefit are tools that bridge some of the financial gap.