Last updated 27 October 2026 · 8 min read · By Sarah M., Support Coordinator
In short
There is no single official price for an ADHD assessment in Australia, so the ADHD assessment cost depends on who assesses you and where. Things that can affect it include the type of clinician, whether you use the public system, and any Medicare rebate. One announced change is that from early 2027, NSW Health will fund up to 2,500 ADHD assessments by trained GPs with no gap payments (NSW Agency for Clinical Innovation). This guide sits within our wider guide to getting an ADHD diagnosis in Australia.
Key points
There is no single official fee for an ADHD assessment, so ask the clinic for a written fee and what it includes before you book.
Cost can depend on the type of clinician, how long the assessment takes and whether it is in the public or private system.
From early 2027, NSW Health will fund up to 2,500 ADHD assessments by trained GPs, with no out of pocket costs for patients. These places are not yet available in October 2026.
Check the Australian ADHD Guideline, healthdirect and your state health department for current pathways.
ADHD assessment cost at a glance
Price
No single official fee; ask each clinic for a written quote (checked October 2026)
Who assesses
Children are usually diagnosed by a paediatrician, child psychiatrist or psychologist (healthdirect); any diagnosis needs a thorough assessment by an appropriately trained and credentialled clinician (AADPA)
Interview length
A detailed clinical interview may take between 2 and 3 hours (Australian ADHD Guideline)
NSW funded places
From early 2027 (not yet available), NSW Health will fund up to 2,500 GP assessments with no gap payments
Medicine cost
From 1 January 2026, up to $25.00 per PBS prescription for general patients and $7.70 concessional
Official source
Australian ADHD Guideline, Australasian ADHD Professionals Association (AADPA)
ADHD assessment cost in 2026
Around 6-8% of children and 3-5% of adults in Australia have ADHD (Australian ADHD Guideline). The table sets out what is known about each pathway; for any fee, ask the clinic.
Pathway
What the sources say (October 2026)
What you pay
NSW GP trained in ADHD
From early 2027, NSW Health will fund up to 2,500 assessments
No out of pocket costs for these places once they start
Paediatrician or child psychiatrist
healthdirect says children are usually diagnosed by these specialists or a psychologist
Set by the clinic; ask for a written quote
Adult assessment
Requires evidence that symptoms began in childhood; school reports may be requested
Set by the clinic; ask what Medicare covers
Public health service
Ask your GP or state health service what is available where you live
Check with your state health service
Medicine after diagnosis
From 1 January 2026, general patients can be charged up to $25.00 per PBS prescription; PBS subsidy restrictions for ADHD treatments differ depending on the age at diagnosis
$7.70 for concessional patients, not indexed for 2025 to 2029 (PBS)
The healthdirect description of who diagnoses ADHD is on its ADHD page. For the PBS co-payment on medicine, see our guide to how much ADHD medication costs.
Looking for NDIS support at home?
TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.
What changes the ADHD diagnosis cost for adults and children
The same diagnosis can cost different amounts depending on these things, so ask each clinic about them.
The type of clinician you see, such as a GP, psychologist, paediatrician or psychiatrist.
How long the assessment takes; a detailed clinical interview may take between 2 and 3 hours.
Whether you are in the public or private system.
Any Medicare rebate and whether the clinic charges a gap above it; ask for the total out-of-pocket cost.
Extra reports or testing; the guideline notes direct observation, neuropsychological testing, neuroimaging and EEG did not increase the accuracy of diagnosis (AADPA diagnosis).
Telehealth or in person, and travel if the nearest clinician is far away.
Free online ADHD assessment and ADHD free assessment for adults
Free online quizzes cannot diagnose ADHD. ReachOut Australia states that ADHD can’t be diagnosed online or through an ADHD quiz, and that symptoms must be present before age 12 (page updated 28 July 2026; ReachOut).
Only a qualified professional can assess ADHD, so treat any quiz result as a prompt to see your GP.
Can you get diagnosed with ADHD for free? From early 2027, possibly through the NSW funded GP places; ask your GP whether any public option exists where you live now.
Be cautious of any service that promises a diagnosis from a short online form.
Rating scales can assist with diagnosis but should not be used alone, according to the Australian ADHD Guideline’s clinician factsheet (AADPA clinician factsheet).
How to check you are charged correctly for an ADHD assessment
1Ask for the fee in writing before you book. Request the total cost, what it includes, any report fee and the cancellation policy.
2Ask what Medicare covers. Your GP or the clinic can explain any rebate and whether you need a referral to claim it.
3Check what the assessment involves. A thorough assessment by an appropriately trained and credentialled clinician is needed; be wary of services using a quiz alone.
4Keep the receipt and report. You may want them later, for example for a future prescriber.
5Compare against the public pathway. Ask your GP whether a funded place or public service exists in your state before paying privately.
What to bring to keep the assessment efficient
Old school reports, report cards or teacher comments from before age 12; for adults, school reports may be requested.
A list of current medicines, supplements and past treatments, so the clinician has the full picture.
A short written summary of how symptoms affect home, school or work, since the checklist asks about impairment in at least two settings.
A support person who knows you well, if you would like them to add their view during the interview.
Looking for NDIS support at home?
TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.
Start with your GP, ask for the fee in writing and compare it with any public option. At TQN Care, we provide practical NDIS support at home and in the community, such as help with appointments, routines and community access, across Sydney, Melbourne and surrounding areas (NSW & VIC). See our NDIS services or make a referral when you are ready.
SM
Sarah M., Support CoordinatorTQN Care is a registered NDIS provider supporting people across Sydney, Melbourne and surrounding areas (NSW & VIC).
Common questions
FAQs about ADHD assessment cost
How much does an ADHD assessment cost? +
There is no single official fee, because each clinic sets its own. Ask for the total in writing, including the Medicare rebate and any gap. In NSW, funded GP assessments with no gap payments are due to start in early 2027.
How much to get diagnosed with ADHD as an adult? +
The cost depends on the clinician and how long the assessment takes. A detailed clinical interview may take between 2 and 3 hours. Adults also need evidence that symptoms began in childhood, so gather old school reports before you book.
Can you get diagnosed with ADHD for free? +
Sometimes. From early 2027, NSW funded GP places will carry no out of pocket cost, and your GP can tell you whether a public option exists where you live. A free online quiz cannot diagnose ADHD.
How much for an ADHD diagnosis if I am on a low income? +
Ask your GP about public services and funded programs first, then ask private clinics about their fees and Medicare rebates. After diagnosis, general patients can be charged up to $25.00 per PBS prescription and concessional patients $7.70.