What is the NDIS — and why it exists

Before you do anything — before you apply, before you build an evidence pack, before you sit in a planning meeting — it helps to understand what the scheme is actually for. Because almost every point of friction parents hit with the NDIS comes from misunderstanding one of the three ideas that sit underneath it.

Australia's third universal scheme

Australia has three big pooled schemes. Medicare pools the cost of medical care. The Pharmaceutical Benefits Scheme pools the cost of medicines. The National Disability Insurance Scheme, introduced under the NDIS Act 2013, pools the cost of disability support. The principle is the same each time: any one family would be unable to afford what a person might need across their lifetime, so the country funds it collectively.

The National Disability Insurance Agency (NDIA) — a Commonwealth agency — runs the scheme. The Commonwealth funds roughly half; the states and territories fund the rest. The scheme is insurance, not welfare. That distinction matters more than most parents realise.

Why 'insurance' matters

A welfare payment is means-tested. It looks at what you earn, what you own, and what you've contributed. The NDIS does none of that. Your eligibility has nothing to do with your income, your assets, or your family's capacity to pay. It is based entirely on your child's functional need — what their disability means for their ability to do everyday things.

An insurance scheme also takes a whole-of-life view. It asks: what does this person need now to live a good life, and what early investment reduces the support they'll need later. That's the principle behind the Early Childhood Approach — investing early, because the evidence is overwhelming that intervention before age seven produces the largest functional gains.

The scheme's three goals

The NDIS Act sets out three things the scheme is meant to do. It helps to memorise them — you'll hear them echoed in every planning meeting, every review, every decision letter.

1. 1Help people with disability pursue their goals and take part in the community and workforce.
2. 2Support the families and carers of people with disability.
3. 3Give people with disability choice and control over the supports they receive.

Everything the scheme funds has to connect back to one of these. When an NDIA planner asks you to describe a goal, they are not being bureaucratic — they are trying to map what your child needs into one of those three outcomes, because that is what the Act empowers them to fund.

What the scheme actually funds

The NDIS funds 'reasonable and necessary' disability-specific supports. We have a full chapter on what 'reasonable and necessary' means — it is a six-part legal test from section 34 of the Act. In plain English, it funds things that:

• Are related to your child's disability (not to typical costs of raising a child).
• Support your child to pursue the goals in their plan.
• Represent value for money.
• Are effective and beneficial for your child, based on current good practice.
• Take into account what's reasonable to expect from family, community, and other government services (schools, Medicare, hospitals).
• Are best provided by the NDIS — not by another system.

How big is the scheme

The NDIS supports over 660,000 Australians. Roughly one in three participants is a child. Children aged 0–6 made up 16% of all participants in the most recent published data — the fastest-growing cohort. The biggest single diagnostic group among children is autism. The second-biggest category in under-9s is developmental delay, which doesn't require a named diagnosis to access early childhood supports.

In the 2024–25 financial year, total scheme spending was around $48 billion. That is real money moving to real families. If your child's development is tracking outside the usual range, this is very likely the funding conversation you will end up in — and it's worth getting familiar with early.

The two pathways for children

There are two ways children access the NDIS, and which one applies depends on age.

Under 9: the Early Childhood Approach

Children under 9 access the NDIS through Early Childhood Partners — specialist agencies contracted by the NDIA to be the first point of contact for families. The access criteria are broader: a child can access this stream with developmental delay alone, without a formal diagnosis. The idea is to meet families early, before the clinical picture is fully settled, and provide early supports that change the trajectory.

Some children will receive early connections (short-term support from the Partner) without a plan. Others will be found eligible for an NDIS plan. The Partner is your guide through both.

Nine and over: the standard access test

From age 9, children enter the scheme through the same access test adults use. The child must meet either the 'disability requirements' or (for 0–9s still under ECA) the 'early intervention requirements'. The disability requirements are stricter — permanent impairment that substantially reduces functional capacity in at least one domain: mobility, communication, social interaction, learning, self-care, self-management.

This is why many parents of autistic, intellectually-delayed, and global-developmental-delay children apply before age 9 if they can — the earlier, broader stream makes access easier.

The common misconceptions, cleared

• The NDIS is not means-tested. Your income doesn't matter. Never has, never will.
• The NDIS is not a Centrelink payment. You don't receive cash — you receive a budget of funded supports you can use through approved providers.
• You do not need a diagnosis under 9. Documented developmental delay is enough.
• ADHD, by itself, usually does not meet the access criteria. You need evidence of substantial functional impairment, and ADHD without co-occurring conditions typically doesn't reach that threshold. This surprises parents and is worth knowing early.
• The NDIS does not fund education costs that schools are legally required to provide under the Disability Standards for Education 2005.
• The NDIS does not fund medical treatment — that's Medicare's lane. It funds disability-specific supports that Medicare doesn't cover.

What to do next

If you're at the very start of this — your child's paediatrician has suggested NDIS, or you've started wondering yourself — the right next step is usually one of two things, depending on age.

1. 1Under 9: contact your state's Early Childhood Partner directly. You do not need a referral. They will talk you through early connections and, if appropriate, the application process. Find them via ndis.gov.au.
2. 2Nine or over: book a longer appointment with your GP or paediatrician and ask for an NDIS-specific report. Then either contact a Local Area Coordinator (LAC) or submit the Access Request Form directly to the NDIA.