Skip to main contentSkip to search
end|thewaitontario
Start Navigator

New here? Start with our 2-minute guide to OAP registration , no sign-up required.

FOI updates

Get the next FOI release when it lands. The last one recorded 71,263 children waiting for a funding agreement (May 2026).

No spam. One email a month. Unsubscribe in one click. Privacy policy.

end|thewaitontario

End The Wait Ontario is a parent-led advocacy organization. We publish FOI-verified data on the Ontario Autism Program waitlist and push for evidence-based reform. Built for Ontario families, researchers, and journalists.

Email Your MPP (2 min)

Get help

Start here

  • Build a private plan
  • Get a diagnosis started
  • Check if your child qualifies
  • Register for the OAP

While you wait

  • Find support before funding starts
  • Claim the tax credits you are owed
  • Read plain answers to common questions
  • Use the calculators and planners

Near you

  • Find a provider near you
  • See what your region offers
  • Get help in a crisis today

Your region

  • Toronto
  • Ottawa
  • Hamilton
  • London
  • Mississauga

More

  • Search pages and guides
  • What is the OAP?
  • Options while waiting
  • Funding amounts
  • Wait estimator
  • Funding estimator
  • Therapy budget planner
  • Choosing a provider
  • Submit a provider
  • OAP funding guide
  • Autism services across Canada
  • Cost calculator
  • Get your personal next steps

School

Get support in place

  • Know your child's school rights
  • Write an IEP that holds up
  • Ask for an educational assistant
  • Get ABA methods used in class

When it goes wrong

  • Take a school to the tribunal
  • Read the seclusion-room record

This school year

  • See how the strike affects your child
  • Keep learning going during a strike

More

  • Read every school guide

Evidence

The numbers

  • See how many children are really waiting
  • Track the waitlist over time
  • See what clearing the list would cost

Where the money goes

  • Follow the autism budget
  • Understand how the OAP works
  • See how invitations are handed out

Read the record

  • Check the source behind each figure
  • Copy citation-ready facts
  • Read the investigations

More

  • How long is the wait?
  • How many are waiting?
  • Data stories from parents
  • See every dataset and chart

Act

Two minutes

  • Share what your family is living through
  • Check where your MPP stands

When it needs to escalate

  • File a formal complaint
  • Weigh your legal options

About this site

  • See who runs this site
  • Send us a message
  • Browse every page

More

  • Every page on the site
  • Advocacy toolkit
  • How we fund this work
  • Media references
  • About the founder
  • Press
  • See All Ways to Take Action

Legal Disclaimer: This website presents advocacy arguments based on publicly available data and legal frameworks. While we strive for accuracy, this content is for informational purposes only and does not constitute legal or medical advice. Nothing on this website should be construed as a guarantee of any specific legal outcome.

Independence: End The Wait Ontario is a parent-led advocacy group. We are not affiliated with the Ontario government, the Ontario Autism Coalition, Autism Ontario, or the World Health Organization. We cite FOI data obtained by the Ontario Autism Coalition as a matter of public record. This does not constitute affiliation. References to these organizations are for informational purposes; no endorsement is implied.

Non-partisan policy advocacy: We advocate on policy outcomes for children and families and do not endorse any political party or candidate.

Statistics are current as of the dates cited and may change. For specific legal guidance, consult a licensed attorney. For medical advice, consult qualified healthcare professionals. Last updated: 2026.

Search the site
Legal|Privacy|Terms|Cookies|Accessibility|Corrections|Authority|Français

Speak softly and carry a big stick.·The data is the stick.·Follow the data. Demand the standard.

Founded by the family behind Carroll v. Ontario, a human-rights case about autism wait times (HRTO 2025-62264-I, not yet decided).

© 2026 End The Wait Ontario. All rights reserved. · Parent-led advocacy · Not a government agency

The standard we hold parents to

Fail to provide for your child, and you answer to the law.71,263children are still waiting for Ontario’s autism care.Ontario should answer too.

Fail to provide for your child, and you answer to the law. 71,263 children are still waiting for Ontario’s autism care. Ontario should answer too.

Tier 1 · Government / FOI“71,263 of 91,974 registered children have no active Core Funding Agreement.”As of2026-05-13Verified2026-08-10→ MCCSS OAP progress reports · OAC FOI, published July 2026

Ontario’s own reports: 77.5% of 91,974 registered children have no funded agreement. MCCSS progress reports, obtained by FOI (May 2026).

That standard is Canada’s Criminal Code: a parent must provide their child the Tier 1 · Government / FOI“Under Canada's Criminal Code, a parent or guardian has a legal duty to provide a child the necessaries of life; failing that duty without lawful excuse can be a criminal offence. We hold that the same standard of care should apply to the government that runs the program these children are waiting in.”ReleaseC-46 · s. 215Verified2026-08-10→ Criminal Code, R.S.C. 1985, c. C-46, s. 215. Ontario owes the children on its own waiting list the same duty of care.

Email Your MPP (2 min)See the FOI DataSee the FOI Data
ONOntario Autism ProgramIllustrative message
Hi — where are we on my child’s OAP registration?
You’re on the list.
Day 1,461 on the list
If I left him without care, I’d have to answer for it.
Who answers for this?

Dramatized exchange · FOI-verified wait

  • We draft the letter. You review and send.
  • Nothing sends automatically.
Jump toOn this page
  • Start here
  • Key numbers
  • Why timing matters
  • Waitlist growth
  • Sources
  • Local services
  • Questions
  • Take action

Start here

Find your next step.

Choose your situation, or answer eight questions for a personalized action plan.

Build my next-step planEight plain questions · about five minutes

Choose your situation

  • I need an assessmentReferrals, public and private options, and diagnosis steps.
  • My child was just diagnosedRegister for the OAP and prepare the documents you need.
  • We are already waitingInterim supports, wait estimates, and record keeping.
  • I need nearby servicesSearch providers and guidance for your Ontario community.

Not a family?

  • Working on a story? The record, sources and datasets
  • Read the investigations

Not seeing your situation? Browse all guides and tools.

Latest public record

New filings and updates

View all updates
  • Founder Statement · First PersonPublished 2026-08-31
    No Right to Receive.I registered my son at eighteen months. His first appointment came four years, eleven months and eleven days later. Ontario’s written position is that he was never entitled to anything.Read the story    On the record4y 11mfrom registration to a first appointment — a phone call. Every figure from the public record. My son is never named.
  • Education Bargaining · LiveUpdated September 3, 2026
    No strike called. The contracts have expired.Students are back without new agreements and four of five tables are stalled at the Labour Board. Your child’s right to accommodation does not pause. Get the continuity plan in writing now.See the live status    On the recordmore than 255,000teachers and education workers whose central agreements expired August 31, 2026. Reviewed weekly against named sources.
  • Celebratingend|thewaitontario
    200KServed

    200,000 visits and counting

    See the milestone
  • Founder Statement · Part TwoPublished 2026-08-28
    The Record Exists.During my reporting on the Ontario Autism Program, someone approached me. I declined, and I preserved everything. This is what exists, and who can examine it.Read Part Two    On the recordNames no one. Describes no one. The sealed record is available for legitimate examination.
View all updates

How many children are waiting for the Ontario Autism Program?

The Ontario Autism Program waitlist holds 91,974 registered children as of May 13, 2026. Among registered children, 71,263 have no active Core Funding Agreement, a gap of 77.5%. According to MCCSS FOI via OAC · May 2026, only 20,711 children hold active funding agreements.

According to the same FOI release, registrations climbed from 89,799 on March 4, 2026 to 91,974 by May 13, 2026. According to CBC News, 88,175 children were registered and 20,666 held funding on January 7, 2026. End The Wait Ontario calculated a net gap of 907 unfunded children monthly across the January to May 2026 window. Registrations rose 918 children monthly while funding agreements rose only 11 over the same window.

The comparison measures published FOI columns and stands as history, not a projected future value. Families and reporters should treat every figure above as a documented program status, not a promised invitation.

The most recent window between two published columns

Ontario Autism Program registrations and active Core Funding Agreements on two published columns of the same MCCSS bi-weekly progress-report series.
MeasureMarch 4, 2026May 13, 2026Change
Registered with the OAP89,79991,974+2,175
Active Core Funding Agreement20,63320,711+78

Source: MCCSS Ontario Autism Program figures, May 13, 2026, obtained by the Ontario Autism Coalition under Freedom of Information. Both columns come from the same MCCSS bi-weekly progress report series, so the difference is like for like.

Find your registration cohort

The Wait Outlasts the Window

WHO emphasizes timely access to early intervention; peer-reviewed research finds the strongest gains start before age three. Ontario does not publish a province-wide average wait; the documented wait is 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026).

A waitlist that only grows

About 907 more children join the unfunded backlog every month, measured across the January to May 2026 FOI window.

Source ledger

Every figure. FOI-verified.

Filed FOIs, FAO reports, Public Accounts, and peer-reviewed research. Open the drawer to inspect any number.

Local next step

Find the clearest route in your region.

Ontario has one provincial waitlist, but assessment, therapy, school, and provider options change by community. Explore the map, then open the guide for your area.

Provider directory

ETWO has verified 57 providers directly. The government’s separate official OAP Provider List, which ETWO does not curate or cross-check, holds 970 entries.

Here is what we can find near you. Enter a postal code or city — only the first three characters of a postal code are ever used, and nothing you type leaves your browser.

Toronto guideOttawa guideSudbury guideAll regional guidesBrowse provider list →

Media reference

Ontario’s autism wait, in the World Health Organization’s feed

A clip of Spencer Carroll on autism early intervention was included in World Health Organization autism social media on October 29, 2025.

Watch the reelPlays here, loaded from Instagram

Published October 29, 2025 · World Health Organization, official Instagram (@who) · View the primary record

Questions about Ontario’s autism waitlist

  • How many children are on the Ontario autism waitlist?

    As of May 2026, 91,974 children are registered with the Ontario Autism Program. Of those, 71,263 (77.5%) are waiting without funded core services. The figure does not count children still waiting for an autism diagnosis, at least 6,113 more across five publicly-funded hubs (Trillium FOI, March 2024).

  • How long is the wait for autism services in Ontario?

    Ontario does not publish a province-wide average wait for funded core services. The Ontario Autism Coalition's FOI analysis puts the documented wait at 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026). The WHO emphasizes timely access to evidence-based early intervention. Peer-reviewed research (Dawson et al., Pediatrics 2010) found significant developmental gains from intervention starting at 18-30 months. Most children registered today will reach school age before they receive funded therapy.

  • What is the Ontario Autism Program (OAP)?

    The Ontario Autism Program is the provincial program that funds autism services for children under 18. $965M was allocated to the program in the 2026-27 fiscal year. In 2023-24, the Financial Accountability Office found that approximately 55 cents of every OAP dollar did not reach core clinical therapy, $57.9M went to the intake contractor alone.

  • Why is the Ontario autism waitlist so long?

    Registration has outpaced funded service every year since the 2019 OAP redesign. In 2020, the Financial Accountability Office estimated that $1.35B a year was needed. Today, the gap is $385M (FAO 2020 at 2018-19 levels vs. 2026-27 budget), and 71,263 children are waiting without core-service funding. The shortfall has compounded; funding has not kept pace.

  • What can I do about the Ontario autism waitlist?

    One quick, effective action is sending an evidence-cited letter to your MPP; no single action guarantees a policy result. End The Wait Ontario provides a free letter tool that auto-drafts a constituent message using FOI data, legal frameworks (Charter s.15, Ontario Human Rights Code), and named sources. The 2016 OAP policy reversal followed sustained parent advocacy; constituent contact remains a documented way families have placed pressure on provincial policy.

Children Cannot Wait Five Years

Send a cited letter to your MPP. The tool pre-fills the verified data from this page and finds your representative in two minutes.

Email Your MPP (2 min)See All Ways to Take Action ›
  • Prefer a private first step? Start with the Navigator.
  • Family affected? Share your story.

Related Resources

  • OAP Eligibility
  • How to Register for OAP
  • Free Services Available Now
  • Waitlist Data
  • Diagnosis Hub
Citable facts from this page(5)

What is the Ontario autism waitlist crisis?

Verified

As of May 13, 2026, Ontario has 91,974 children registered with the Ontario Autism Program, but only 20,711 (22.5%) have an active Core Funding Agreement. 71,263 children are still waiting. The Ontario Autism Coalition (July 2026, reported from community intake) says invitations are reaching families registered in August 2021; WHO emphasizes timely access to early evidence-based interventions.

Source: MCCSS FOI via OAC · May 2026; WHO Fact Sheet: Autism Spectrum Disorders · Verify Link

What does the WHO say about early autism intervention timing?

Verified

The WHO Fact Sheet on Autism Spectrum Disorders (updated Sept. 17, 2025) states that timely access to early evidence-based psychosocial interventions can improve the ability of autistic children to communicate effectively and interact socially. Dawson et al. (2010, Pediatrics; PMID 19948568) confirmed in an RCT that ESDM (Early Start Denver Model) at 18–30 months produced significant developmental gains.

Source: WHO Fact Sheet: Autism Spectrum Disorders (updated Sept. 17, 2025); Dawson et al., Pediatrics 2010 (PMID 19948568) · Verify Link

How long do families wait for Ontario autism services?

Verified

Ontario autism wait times for core clinical services now exceed 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026). Funding invitations are currently reaching families who registered in August 2021 (Ontario Autism Coalition, July 2026 (reported from community intake)). This delay far exceeds the sensitive early intervention window recommended by developmental specialists.

Source: MCCSS FOI via OAC · May 2026 · Verify Link

How much does Ontario fund for autism treatment?

Verified

Core Clinical Services funding ranges $6,600-$65,000 per year based on age/needs (with a total OAP budget of $965M for 2026-27, up from $779M in 2025-26, per the Ontario Budget tabled March 26, 2026). This is direct funding; families choose public or private providers. However, intensive ABA therapy can cost up to $95,000 USD/year (2020 US cost estimate cited in FAO 2020 report; Canadian costs vary), leaving significant out-of-pocket gaps.

Source: 2026 Ontario Budget, FAO Report 2023-24 · Verify Link

What percentage of registered children receive autism services in Ontario?

Verified

Of 91,974 children registered in the Ontario Autism Program (May 13, 2026), 22.5% have active Core Funding Agreements. This is an administrative measure and does not establish service receipt; approximately 77.5% have no active agreement.

Source: MCCSS FOI via OAC · May 2026 · Verify Link

About this page

See authorship, freshness, trust signals, and ways to stay current.

Written bySpencer Carroll

Founder & Autism Advocate

Parent of autistic child navigating OAP system

The architecture and arithmetic of the wait.

One hidden mechanism. Three systems. One pattern. The province pays in full only after your family breaks.

View all

  • New · On the record

    A Stranger Asked If Autism Families Could Deliver 240,000 Election Volunteers. I Recorded All Three Calls.

    I had reached the Premier and his Minister; neither could tell me when my son would get help. Then someone else got in touch to explain how things really get done. I recorded it.

    Read the statement

    3

    3 recorded calls. Every quotation checked against three transcription systems. Nobody is named.

  • New · First Person

    My Son Has No Right to Therapy. Ontario Put That in Writing.

    The founder’s own account: registered at eighteen months, first appointment four years, eleven months and eleven days later — and the province’s written position that eligibility gives rise to no right to receive anything.

    Read the founder’s story

    4y 11m

    4y 11m from registration to first appointment — a phone call — with no needs assessment and no funding determined at any point between.

  • New · Authority

    The Authority Factory.

    Ontario did not discover a consensus about autism care. It assembled one. A fixed envelope, an advisory panel, a single administrator and a sealed allocation tool put advice, delivery and verification inside one system.

    See how the consensus was built

    $600M

    $600M a fixed envelope set before the need was counted, with advisory, delivery and verification authority concentrated in one system.

  • New · School governance

    The Car Is Public. The Keys Aren’t.

    An illustrated anatomy of how Ontario’s school-board laws can separate public education from the local control, supports, contracts and buildings that make it work, while the public retains the institution, its obligations and its costs.

    See who holds the keys

    8

    8 school boards placed under provincial supervision, serving over 700,000 students, governed by appointees rather than elected trustees.

  • New · Public spending

    Power Doesn’t Attract People With Diminished Empathy. It Produces It.

    Ontario calls the autism program a near-billion-dollar investment. Less than half of what it spent reached core clinical services, and the figures that would settle the argument now arrive by freedom-of-information request rather than by publication.

    See where the money stops

    22.5%

    22.5% of 91,974 registered children hold an active Core Funding Agreement. 71,263 are still waiting for one.

The seriesFive investigations behind the leads above.

  • The Tool

    Scored in the dark.

    Ontario built a secret test that sets how much therapy each autistic child gets, then convinced a tribunal that letting families see it would threaten the province’s finances.

    See what Ontario sealed

    26

    261 pages of secret scoring set a child’s core therapy funding at the OAP needs assessment, sealed by Ontario and never shown to the family.

  • Schools

    They sent your child home.

    No EA today. Modified day. Come pick them up. Four laws made it so no one has to answer for it.

    Read what four laws did

    49-72%

    49-72%2 of educational-assistant absences go unfilled. Support lands unevenly, school to school.

  • Access

    Everything but the care.

    Your child has been registered for five years. The intake contractor has been paid for five years. Only one of them received services.

    See who got paid

    $57.9M

    $57.9M3 paid to the intake contractor each year, in full, while the therapy funding stays capped.

  • Therapy

    Give up your child. Then they'll pay.

    Early therapy is capped. Crisis care is not. The province funds the aftermath. It caps the prevention.

    See what the province chose to fund

    71,263

    71,2634 children waiting for funding capped by the list, a reported wait of 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026)5.

  • The Market

    Built for the back end.

    Ontario made meaningful care scarce and intensive billing valuable. In the mature U.S. market, private equity followed that exact gradient.

    Follow the money to the back end

    85%

    85%6 of U.S. autism-services mergers and acquisitions from 2017-2022 were completed by private equity.

Source trail: 6 cited records across filings, FOI, peer-reviewed research, and public reporting.
  1. The sealed Determination-of-Needs scoring tool. 26 pages, about 90 items, 10 domains. Information and Privacy Commissioner of Ontario, Order PO-4494.
  2. EA absence fill rates: Auditor General of Ontario, special report on special education, 2026.
  3. AccessOAP administration (operated by Accerta): ~$57.9M in 2023-24. The Trillium, via Freedom of Information, July 2024.
  4. Unfunded OAP registrations: MCCSS Ontario Autism Program figures as of May 13, 2026, released in response to an Ontario Autism Coalition Freedom of Information request and published by the OAC in July 2026; part of the same bi-weekly OAP Core Clinical Services progress-report series as FOI release CSS2026-0749 (to Mar 4, 2026) and the CBC News FOI investigation (Jun 2024 – Jan 2026).
  5. Reported wait: Ontario Autism Coalition, via CBC.
  6. Private-equity share of U.S. autism-services M&A, 2017-2022: Batt, Appelbaum and Nguyen, Center for Economic and Policy Research (2023).

Coverage and citations.

Media inquiries

Request an interview

Available for interviews, background briefings, data clarification, and spokesperson availability. Responses within 24 hours. Urgent deadlines: note your deadline in the message.

Contact for press inquiryOpen the six briefing blocks

World Health Organization

Seen internationally.

A father's story was included in a World Health Organization Instagram reel about autism, care, and early intervention. Not affiliated with or endorsed by WHO.

Why this exists

My son was diagnosed early. We registered immediately. Then we waited while the developmental window kept closing. This project turns that waiting into public record, evidence, and action.

Oct 29published in 2025
View on InstagramRead the story
Watch the clip⌄
Watch on InstagramOpens in a new tab

  • CityNews Toronto · Aug 17, 2026

    Named as the source.

    Reporting on Ontario Autism Program wait times, CityNews attributed the province-wide waitlist figure and the 5+ year wait for families registered in 2021 to End The Wait Ontario, describing it as a parent-led campaign that tracks wait times.

    Read the articleSee the data
    71,263

    children waiting for core funding

  • The Local & The Philanthropist Journal · Jul 30, 2026

    Funded reporting, sourced to us.

    Gabrielle McMann's reporting on the shortage of summer camps for Toronto children with disabilities attributes the Ontario Autism Program waitlist to End The Wait Ontario. Written under a fellowship funded by the Rideau Hall Foundation, which credited the story in its own post on local journalism.

    Read the articleAll coverage
    71,263

    children waiting for core funding

  • CCRW · Apr 30, 2026

    National credit.

    The Canadian Council on Rehabilitation and Work — a national disability-employment charity — cited our plain-language stimming explainer in its neurodiversity-in-the-workplace education article. Credit, not affiliation or endorsement.

    Read the articleSee the resource
    CCRW

    national disability-employment charity citing our autism education work

  • Ottawa Citizen · Jun 21, 2026

    A human face.

    An Ottawa Citizen profile of a Kanata family on the spectrum, citing the FOI-released data we verify and publish on the OAP funding gap.

    Read articleSee the data
    121%

    registration growth since 2020

  • CBC News · Mar 30, 2026

    CBC investigates.

    A CBC News investigation by Toronto's Enterprise Unit, drawing on FOI-released progress reports.

    Read articleSee the data
    71,263

    children waiting for core funding

  • CBC Ottawa Morning · Mar 31, 2026

    Live on the radio.

    A five-year wait, in the founder's own voice, days after the 2026 budget.

    ListenFounder story
    5

    years waiting for core services

  • The Trillium · Mar 27, 2026

    Where the money goes.

    OAC demands core-therapy funding be ringfenced. Trillium policy beat.

    Read articleBudget breakdown
    $186M

    demanded for core therapies

  • The Trillium · Mar 25, 2026

    Accountability, on the record.

    Sneh Duggal's feature on endthewaitontario.com, FOI-released data we verify and publish, public-record.

    Read articleFOI archive
    91,974

    children's registration data documented on the platform

  • OPSEU Report · Jun 3, 2026

    Open the books. Fund our services.

    Ontario's largest public service union cited waitlist data consistent with the FOI-released figures we publish, and lists End The Wait Ontario among its sources, in their report on the $1 billion privatization of public services.

    Read reportFollow the money
    $1B+

    OPSEU's estimate of privatized service spending

Founded by Spencer Carroll. HRTO 2025-62264-I · Applicant. Every number FOI-verified, methodology. All press coverage.

The science

Five years waiting.

A typical child's journey through the Ontario Autism Program: registered at age 3, services begin at age 8. A five-year wait that consumes the entire window clinical research identifies as critical.

A typical child's journeyRegistration-to-funding intervals, January 2026 cohort
Registered at age
Assumes a wait of 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026) at every age. Age 3 is the published example.
WHO windowPeak neuroplasticity · birth to age 6
Highest treatment efficacy
Typical childRegistered at 3 · services at 8
Pre-diagnosis
5 years waiting
3 years of the window lost
Age 6 · Peak efficacy window
Peak window already passed,still waiting 2 more years
Registered · age 3
Services begin · age 8
012345678

Child's age (years)

By the time the average Ontario child receives their first funded session, the evidence-based window for maximum neuroplasticity closed 2 years earlier.

Intervention before 6
2×

greater gains in cognitive and adaptive functioning. Some children lose their diagnosis entirely. The brain's plasticity makes early therapy dramatically more effective.

Intervention after 6
Every year

of delay narrows the range of achievable milestones. Reduced neuroplasticity means slower progress, higher lifetime costs, and poorer outcomes. For most families, Ontario's multi-year waitlist makes that delay unavoidable.

Of the 71,263 children on the unfunded backlog, the majority were registered between ages 2 and 4. At the current pace, most will age past 6 before receiving any core funding, missing the window that the WHO, the American Academy of Pediatrics, and every major autism research body identifies as critical.

5yrs
Reported wait to funding1
3of 6
Window years lost waiting
71,263
Children unfunded2
See the methodologyExplore the FOI data
  1. Wait of 5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026), reported for families registered in 2021. The interactive scenario holds this wait constant across registration ages.
  2. Unfunded backlog as of the May 2026 FOI response. Intervention-window framing per WHO Early Childhood Development guidelines.
Intervention window vs Ontario OAP wait time
MetricValue
WHO intervention windowAge 0-6
Example registration ageAge 3
Reported wait5+ years for families registered in 2021 (community-reported, Ontario Autism Coalition, July 2026)
Service start ageAge 8
Early-intervention years lost waiting3 years
Years after window closes before services2 years

Interactive estimate

Your child loses 3 years of peak intervention.

3 years of peak intervention lost

Move the slider to your child's diagnosis age. We compare against the peak intervention window (age 0–6) and Ontario's 5-year average OAP wait.

Age 1Age 12
Peak intervention windowAges 1-6 · highest treatment efficacy
Ages 1-6 · highest treatment efficacy
Your child's waitDiagnosed at 3 · therapy begins at age 8
5 years waiting
Diagnosed · age 3
Therapy begins · age 8
1234567891011121314

Child's age (years)

Without the wait

3 years

Years of peak window from diagnosis to age 6.

With Ontario's 5-year wait

none

Years of peak window remaining when therapy actually starts.

Peak years lost

3 years

100% of the post-diagnosis peak window.

Source: American Academy of Pediatrics — Hyman SL et al., Pediatrics 2020;145(1); Dawson G et al., Pediatrics 2010;125(1):e17-e23 (PMID 19948568). Wait time from lib/data/waitlist-stats.ts (May 2026, triple-verified).

Early-intervention window estimate for diagnosis age 3
MetricValue
Diagnosis age3
Average OAP wait5 years
Therapy commencement age8
Peak intervention window upper boundAge 6
Peak window without the wait3 years
Peak window with Ontario's 5-year waitnone
Peak years lost to the wait3 years
Percentage of post-diagnosis peak window lost100%
FOI

MCCSS OAP Core Clinical Services Progress Reports (FOI release CSS2026-0749)

Ministry of Children, Community and Social Services (Ontario) · 2026

↗
FAO

Financial Accountability Office — MCCSS Review 2023-24

Financial Accountability Office of Ontario · 2024

↗
Government

Ontario Budget 2026-27 — Autism Services Allocation

Government of Ontario · 2026

↗
Peer-reviewed

Randomized, Controlled Trial of an Intervention for Toddlers With Autism: The Early Start Denver Model

Dawson G, Rogers S, Munson J, Smith M, Winter J, Greenson J, Donaldson A, Varley J · 2010

↗
Peer-reviewed

Early Identification of Autism Spectrum Disorder: Recommendations for Practice and Research

Zwaigenbaum L, Bauman ML, Stone WL, Yirmiya N, Estes A, Hansen RL, et al. · 2015

↗