What's Covered

People want a list. The NDIS gives a test instead, and once you understand why, the test turns out to be more useful than any list could be. A list can only ever answer the exact question it anticipated. The test answers questions nobody has asked yet, including the specific one you are holding in your hand right now.

The NDIS funds supports it decides are reasonable and necessary for your goals. The same item can be approved for one participant and declined for another, so no list or website can tell you what your plan will include. What the published rules do give you is the reasoning the NDIA follows, and that reasoning is public, written down, and surprisingly learnable. This guide walks through it in the order that makes it usable: the two lists that set the outer boundary, the reasonable-and-necessary test that decides everything inside that boundary, the idea of a package rather than a shopping cart, and the replacement-support path for when the thing you want sits just outside the lines.

The two lists that set the boundary

Before the reasonable-and-necessary test is ever applied, an item has to clear a simpler gate. The NDIS defines what it funds through two lists.

The first list is deliberately broad. Its categories are written as descriptions rather than as a catalogue of named products, which is what gives participants room to choose the exact item and provider that suits them. To count as an NDIS support, an item does not need to appear as a specific named example. It needs to fall within one of the funded categories and be covered by that category’s description. That design is intentional, and it is why two very different products can both be fundable under the same category heading.

The second list is the boundary line. It sets out the categories of things that the NDIS will not pay for, whatever else is true about them. It covers day-to-day living costs that any person would have regardless of disability, supports that another system such as health or education is responsible for, anything illegal, and a small number of specific exclusions. An item can be genuinely useful, clearly related to a person’s disability, and still sit on this list, in which case the reasonable-and-necessary test never gets a look in. So the practical first question about any support is not “is it helpful?” but “which list does it belong to?”

There is a real consequence to getting this wrong. If NDIS funding is used on something that is not an NDIS support, or is not in line with the plan, the NDIA can ask for that money to be repaid. That is the strongest reason to understand the boundary before spending, rather than after.

The reasonable-and-necessary test

Everything inside the funded boundary is decided by a single test. A support has to be reasonable and necessary, and the law spells out exactly what that means. To be funded, a support needs to meet all of the following criteria together:

• relate to your disability
• help you work towards the goals in your plan
• help you to work, study and take part in social and community activities
• be value for money
• be likely to be effective and beneficial to you
• work alongside mainstream supports and the other people in your network
• be an NDIS support, or an agreed replacement support

The word to hold onto there is “all”. These are not boxes where hitting a few is enough. A support that relates clearly to a person’s disability but offers poor value for money can still be declined, and a support that is excellent value but has nothing to do with the person’s goals can be declined too. Each criterion is a filter, and a request has to pass through every one of them.

Hold any item up against those criteria and you can usually predict which way it leans, even before you ask. A shower stool for someone whose disability makes standing unsafe relates clearly to disability, serves a daily-living goal, is modest in cost, and is plainly effective. The same stool bought for general convenience relates to nobody’s disability in particular, and the reasoning falls apart at the first filter. You do not need inside knowledge to run this check. You need the criteria and an honest read of the situation.

It also helps to know what reasonable and necessary explicitly rules out. A support cannot be a day-to-day living cost, cannot be for attendance at events or holidays, cannot duplicate something already provided by family or by mainstream and community services, cannot be illegal or harmful, and cannot be a replacement for income. Several of the most common misunderstandings live in that short list. Funding is not a wage substitute, and it is not a way to have the scheme pick up an ordinary cost of living that everyone carries.

For the primary source on all of this, the NDIA’s reasonable and necessary guidance sets out the criteria in full, and its Would We Fund It material works through how planners tend to reason about commonly requested items. That guidance is explanation, not a promise about any individual plan, but it is the closest thing to seeing the decision from the planner’s side of the desk.

A package, not a shopping cart

One subtlety trips up even people who have learned the criteria. Each support in a plan has to be reasonable and necessary on its own, and the supports also have to be reasonable and necessary together, as a package. The plan is assessed as a whole, not just item by item.

This matters because supports interact. A piece of equipment that increases someone’s independence might reduce the support-worker hours they need, and a planner looks at that whole picture rather than at a row of separate line items. It is why a request that looks marginal in isolation can make complete sense inside a well-argued plan, and why a pile of individually defensible items can still be questioned if, taken together, they stop being a coherent set of supports for the person’s goals. Thinking in terms of the package, rather than a shopping cart of separate wins, is how the strongest plans are built.

Replacement supports: when the thing you want is just outside the lines

Sometimes the item that would genuinely help most is not itself an NDIS support. The scheme has a path for exactly this, called a replacement support. It lets a participant use funding on a certain non-listed item instead of an NDIS support already in their plan, provided the swap is a fair trade.

The conditions are precise. A replacement support has to replace an NDIS support already in the plan, help the person the same or more than the support it replaces, appear on the pre-approved replacement supports list, and cost the same or less than the support it stands in for. Everyday examples on that list include standard household items such as a washing machine or dishwasher, smart watches, tablets, smartphones, and an app for accessibility or communication. It is not a way to add extra supports. It is a way to substitute a better-fitting item for one that is already funded.

Two rules keep people out of trouble here. A replacement support has to be applied for and approved in writing before any funding is spent, and the approval lasts only for the current plan.

So the sequence is approval first, purchase second, and the same request cannot simply be resubmitted straight away if it is declined. Knowing that up front saves both an out-of-pocket surprise and a wasted second application.

Assistive technology sits inside the same logic

Equipment is where a lot of “what’s covered” questions actually land, and assistive technology follows the same reasoning with one extra layer: cost. The evidence the NDIA asks for scales with how much an item costs and how much risk it carries.

Lower-cost, lower-risk items generally need little more than a sensible link to a person’s disability and goals, while higher-cost items call for advice or a formal assessment from a qualified assessor. The reasonable-and-necessary test is the same throughout, but the paperwork grows with the price tag. The Buying Equipment guide walks through the tiers, trialling and renting, and repairs in detail, so this pillar keeps to the principle: equipment is covered when it is reasonable and necessary, and the evidence you gather should match the item’s cost.

Education versus product claims

There is a line this site holds carefully, and it is worth stating plainly because it shapes how every verdict page is written. This site names conditions when the topic is the scheme’s treatment of a condition: eligibility, plan structure, funding pathways. That is educational, and it is fair game.

What no honest page does is claim that a product treats, manages, or is designed for a condition. A cushion does not treat anything. It changes how a surface feels and how weight is distributed, and that is what the writing describes. When a page links to a product, it frames the product by the task it helps with, never by a diagnosis. That discipline is not only about honesty. It also matches how the reasonable-and-necessary test actually works, because the test asks what a support does for a person’s goals, not what condition a label attaches to it.

Where to get a real answer

The verdict pages in this pillar work through common items and situations one at a time, each with a plain answer up front and a link to the official guidance behind it. Read a few and you will start to hear the test running underneath every one of them, which is the point. The goal is not to memorise verdicts. It is to be able to reason your own way to one, and then confirm it against the primary source.

Whether a particular purchase can be claimed depends on your individual plan, your goals, and how your funding is managed. Your plan manager or support coordinator can confirm what applies to you.