Functional Capacity Assessment: What It Is and How It Works

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A functional capacity assessment looks at what you can and cannot do in everyday life, rather than at your diagnosis. In the NDIS, it is one of the most commonly requested pieces of evidence and one of the most commonly misunderstood. This guide explains what a functional capacity assessment is, who can carry one out, the six areas it covers, how long it takes, and what it is actually used for. It also covers a point that saves people a lot of money and worry: you do not have to have one to be eligible for the NDIS.

Functional capacity assessment: quick summary

The NDIA describes a functional capacity assessment as an official assessment that looks at your ability to perform daily tasks at home, at work and in the community.
Occupational therapists, physiotherapists, psychologists or medical specialists carry them out, and they must be qualified to make the assessment.
It is split into six areas: communication, learning, mobility, self-care, self-management and social interactions.
You do not have to do one to be eligible for the NDIS, although it can be helpful evidence.
It can take anywhere from one hour to ten hours, depending on the practitioner and the disability.
The NDIA also uses the information to work out what supports you need in your plan, which can include assistive technology, therapies or home and workplace modifications.
From January 2028, access decisions for new applicants will be based on a new standardised, evidence-based assessment of functional capacity.

What a functional capacity assessment is

Above all, the word that matters here is functional. A diagnosis tells the NDIA what a condition is called. By contrast, a functional capacity assessment tells it what that condition means for your Tuesday morning.

The NDIA defines it as an official assessment that looks at your ability to perform daily tasks at home, at work and in the community. It is performed by occupational therapists, physiotherapists, psychologists or medical specialists, and the NDIA states that they must be qualified to make the assessment.

However, a functional capacity assessment can look quite different depending on the disability. There is no single format, and no single template that every practitioner uses. Nonetheless, the framework underneath it stays consistent.

The six areas a functional capacity assessment covers

The NDIA says your treating health professional will evaluate your ability across six categories. Those categories are:

Communication
Learning
Mobility
Self-care
Self-management
Social interactions

Furthermore, those six line up closely with the activity areas in the NDIS disability requirements, which the NDIA’s Applying to the NDIS guideline describes in more detail. That guideline explains each area as follows.

Area	What the guideline says it covers
Communicating	How you speak, write, or use sign language and gestures to express yourself compared with other people your age. It also covers how well you understand people, and how others understand you.
Socialising	How you make and keep friends, interact with the community, or how a young child plays with other children. It also covers behaviour, and how you cope with feelings and emotions in social situations.
Learning	How you learn, understand and remember new things, and practise and use new skills.
Mobility, or moving around	How easily you move around your home and community, and how you get in and out of bed or a chair. It covers getting out and about and using your arms or legs.
Self-care	Personal care, hygiene, grooming, eating and drinking, and health. It covers getting dressed, showering or bathing, eating and going to the toilet.
Self-management (if older than 6)	How you organise your life, plan, make decisions and look after yourself. This is about your mental or cognitive ability to manage your life, not your physical ability to do the tasks.

Above all, that last row catches people out. Self-management is not about whether your hands work. Instead, it is about planning, problem solving, decision making and managing money.

What actually happens in a functional capacity assessment

Helpfully, the NDIA gives examples of what a practitioner might assess. They include personal care such as dressing, bathing, grooming and going to the toilet. Mobility is next, meaning your ability to move around independently as well as using mobility aids. Communication follows, whether through speech or writing.

Beyond that, the examples cover working, meaning your ability to perform work related activities like lifting, carrying or typing. They cover leisure and social activities, meaning your ability to engage in hobbies, sports and social activities. Finally, they cover cognitive function, meaning your ability to perform tasks that require thinking, memory and decision making.

Alongside that conversation, an assessor will often use one or more of the standardised measures the NDIA lists for your primary disability, which appear further down this page. Moreover, because a kitchen you know is very different from a clinic room, it is worth asking whether the assessment can happen where you actually live.

How long it takes

According to the NDIA, the time depends on the health professional you use and your disability, and it can take anywhere from one hour to ten hours. Therefore it advises asking your treating health professional how long the assessment will take before it begins.

Clearly that range is worth taking seriously. A one hour assessment and a ten hour assessment are not the same product, and the difference usually shows up in the report.

Do you need a functional capacity assessment for the NDIS?

No, and this is the single most useful thing to know. The NDIA states directly that you do not have to do a functional capacity assessment to be eligible for the NDIS.

Instead, it says an assessment can be helpful, because it gives the NDIA evidence about how your permanent impairment reduces your functional capacity. It also notes that you, your treating health professional or a carer can provide evidence of how your disability affects your everyday life.

So an assessment is one route to evidence, not the only route. The NDIA lists several forms that evidence can take, including a completed supporting evidence form, a completed evidence of psychosocial disability form, section 2 of the access request form, existing reports, assessments or letters, or simply a letter or email from a treating health professional.

Even so, there is one notable exception in the NDIA’s own guidance. For psychosocial disability, it states that you will also need a functional capacity assessment, and it names the Life Skills Profile 16 measure, the Health of the Nation Outcome Scales and the World Health Organization Disability Assessment Schedule as measures that may be used. Our guide to NDIS psychosocial disability covers that pathway in more detail.

What “substantially reduced functional capacity” means

The phrase appears in the disability requirements, and it has a specific meaning. The NDIA’s Applying to the NDIS guideline says your permanent impairment substantially reduces your functional capacity if you usually need disability-specific supports to participate in or complete those activities.

Next, it defines what counts as disability-specific supports. They include a high level of support from other people, such as physical assistance, guidance, supervision or prompting. They also include assistive technology, equipment or home modifications prescribed by your doctor, allied health professional or another medical professional.

Meanwhile, two further points from the same guideline matter. If you have more than one permanent impairment, the NDIA will consider them together to see whether they substantially reduce your functional capacity. And for a child, the comparison is with other children of the same age, so a child whose ability is much less than most other children the same age may meet the disability requirements.

The guideline also acknowledges that capacity fluctuates. It notes that needs might go up and down each day or each month, gives progressive multiple sclerosis as an example, and says the NDIA considers your ability over time, taking the ups and downs into account. If your condition varies, say so, and make sure the report says so too.

The assessment tools the NDIA prefers

Usefully, the NDIA publishes preferred evidence for each primary disability, listed in order of preference. Yet this is one of the most practical pages on its site and one of the least read. A selection appears below.

Primary disability	Evidence in preference order
Acquired brain injury	Care and Needs Scale for 17 years and over, then WHODAS 2.0 for 17 years and over, then PEDI-CAT for 16 years and under.
Autism	DSM-5, then Vineland-III, then WHODAS 2.0 for 17 years and over, then PEDI-CAT for 16 years and under.
Cerebral palsy	Gross Motor Function Classification System, then Manual Ability Classification System, then Communication Function Classification System.
Intellectual disability, developmental delay and Down syndrome	DSM-5, then Vineland-III, then WHODAS 2.0 for 17 years and over or PEDI-CAT for 16 years and under.
Psychosocial disability	A statement from a treating health professional, plus a functional capacity assessment, which may include LSP-16, HoNOS or WHODAS.
Spinal cord injury	Level of lesion, ASIA Impairment Scale, WHODAS 2.0 for 17 years and over, PEDI-CAT for 16 years and under.
Stroke	Modified Rankin Scale.
Other disabilities	WHODAS 2.0 for 17 years and over, then PEDI-CAT for 16 years and under.

So before you book, ask your practitioner which measure they intend to use. The NDIA lists these tools in preference order, which means a report built on the one it names for your disability matches what it has asked for.

How a functional capacity assessment is used after you have a plan

Meanwhile, access is only half the story. The NDIA states that it uses the information from your functional capacity assessment to determine what kinds of NDIS supports you need in your plan. That might include recommendations for assistive technology, specific therapies, or modifications to your home or workplace.

Consequently, an assessment often does more work at plan reassessment than it did at access. If your support needs have changed, a current assessment is the clearest way to show it. Our guide to NDIS plan reassessment explains how that process works, including the changes taking effect from 27 August 2026.

How to prepare for a functional capacity assessment

Although you cannot pass or fail one, you can certainly make it accurate. These steps help.

Describe your average, not your best. People often perform at their peak in front of a clinician. Say what a normal day looks like, and say what a bad day looks like too.
Talk about the support you already get. If you manage a task only because someone prompts you, that is not independence, and the report should record it that way.
Cover all six areas. Many people prepare only for the physical parts and then answer the self-management and social interaction questions off the cuff.
Bring existing reports. Previous assessments, therapy reports and letters give the assessor context.
Bring someone who knows you. A family member or carer often remembers the things that have become invisible to you.
Ask about the length and the tool first. The NDIA itself recommends asking how long the assessment will take before it begins.

What changes from January 2028

The NDIS Amendment (Securing the NDIS for Future Generations) Act 2026 received Royal Assent on 20 August 2026, and its changes start in stages between 2026 and 2028. Notably, one of the later stages goes to the heart of this topic.

From January 2028, access changes begin for new applicants to the NDIS, with existing participants reassessed over three years. According to the NDIA, those changes include eligibility decisions based on a new standardised, evidence-based assessment of functional capacity, as informed by the Technical Advisory Group. They also include more consistent assessment of permanence and of whether an impairment can be alleviated or treated.

Two things follow. First, nothing about that is in operation yet, so today’s process still applies. Second, the direction is clearly towards a single consistent instrument rather than a wide range of practitioner-chosen reports. Our guide to the new NDIS laws in 2026 sets out every start date in one place.

How to check any functional capacity assessment claim yourself

Unfortunately, a lot of confident but incorrect advice about this topic circulates online. Here is how to verify anything you read, at the source.

Read the NDIA’s page on what a functional capacity assessment is. It carries the six categories, the practitioner list and the time range.
Read what are examples of disability evidence for the preferred tools by primary disability.
Open the Applying to the NDIS guideline and find the heading asking whether your impairment substantially reduces your functional capacity.
Check the date on each source. The pages used here were current as at 29 May 2026, and the guideline is dated 10 December 2024.
For assessment costs, check the current NDIS Pricing Arrangements on the NDIS pricing page rather than any figure quoted in an article, because price limits are maximums and they are updated each year.

Frequently asked questions

Who can do a functional capacity assessment?

The NDIA names occupational therapists, physiotherapists, psychologists and medical specialists, and states that they must be qualified to make the assessment.

Is a functional capacity assessment required for NDIS access?

No. The NDIA says you do not have to do one to be eligible. It can be helpful evidence, and for psychosocial disability the NDIA’s evidence guidance does ask for one, but there is no blanket requirement.

How long does a functional capacity assessment take?

Anywhere from one hour to ten hours, according to the NDIA, depending on the health professional and your disability. Ask before it starts.

What are the six areas of functional capacity?

Communication, learning, mobility, self-care, self-management and social interactions. The disability requirements describe the same territory as communicating, socialising, learning, mobility or moving around, self-care and self-management.

How much does a functional capacity assessment cost?

It depends, so ask before you book. Cost varies with the practitioner and with the length of the assessment, which the NDIA puts at anywhere from one hour to ten hours. Rather than rely on a figure quoted in an article, check the current NDIS Pricing Arrangements on the NDIS pricing page, and ask the practitioner for a written quote.

What is the difference between a functional capacity assessment and a diagnosis?

A diagnosis names the condition. A functional capacity assessment describes what you can and cannot do because of it. The NDIS decides on function, not on labels alone.

How often do I need a functional capacity assessment?

There is no fixed interval. A current assessment is most useful when your needs have changed, or when you are asking for a support that depends on evidence of function.

Can a carer contribute to the assessment?

Yes. The NDIA states that you, your treating health professional or a carer can provide evidence of how your disability affects your everyday life. Our guide to writing an NDIS carer statement covers how to do that well.

What if my ability changes from day to day?

Say so, and make sure the report records it. The NDIA’s guideline explicitly considers ability over time, taking your ups and downs into account.

Will the 2028 changes affect my current plan?

Not immediately. The access changes begin for new applicants from January 2028, with existing participants reassessed over three years after that.

How Centre of Hope can help

Centre of Hope is a registered NDIS provider in New South Wales. However, we do not carry out functional capacity assessments ourselves, because we provide coordination and coaching rather than therapy. Instead, we help you work out what evidence you actually need, find a suitable assessor, and then use the resulting report properly.

Our Support Coordination team can help you organise assessments and connect the findings to your goals. Where a situation is complex or high risk, Level 3 Specialist Support Coordination is available. For people living with psychosocial disability, our Psychosocial Recovery Coaching service can help you prepare for an assessment and follow through afterwards.

You can call us on 0432 250 900.