Consent, capacity and decision-making for NDIS participants

Understanding consent and decision-making capacity helps NDIS participants stay in control of their supports. Here is what you and your family need to know.

Every NDIS participant has the right to make decisions about their own life. That includes choosing who delivers their supports, agreeing to a service, or saying no to something that does not feel right. But for many participants and their families, the concepts of consent, capacity and decision-making support can feel confusing or even a little daunting.

This article explains what these terms mean in plain English, why they matter under the NDIS, and how you can put them into practice when finding and working with disability service providers in Australia.

What does "consent" mean in the NDIS context?

Consent means agreeing to something freely, with enough information to understand what you are agreeing to. In an NDIS setting, consent comes up constantly:

Agreeing to a service agreement with a provider
Allowing a support worker to assist with personal care
Sharing your plan details with a new organisation
Giving permission for a provider to take photos or record information about you

For consent to be genuine, it needs to meet a few basic conditions. It must be voluntary (no pressure or manipulation), informed (you understand what you are agreeing to), specific (you know exactly what is being agreed), and current (you can withdraw it at any time).

Providers registered with the NDIS Commission are required to obtain consent before delivering supports, particularly for anything involving personal information or intimate care. If a provider is asking you to sign something you do not fully understand, you have every right to ask for more time, plain-language explanations, or support from someone you trust before putting your name to anything.

What is decision-making capacity, and who decides?

Capacity refers to a person's ability to understand information, weigh up options, and communicate a decision. It is not a fixed quality. A person might have full capacity to decide what they eat for lunch but need more support to understand a complex service agreement. Capacity can also change over time, or vary depending on the type of decision being made.

Under Australian law, the starting assumption is that every adult has capacity unless there is clear evidence to the contrary. This is sometimes called the presumption of capacity, and it is a cornerstone of disability rights in Australia. The NDIS Quality and Safeguards Commission reinforces this principle by requiring registered providers to respect the rights, dignity and autonomy of participants.

When capacity is in question

If there is genuine concern that a participant cannot make a particular decision safely, the appropriate response is not to remove decision-making entirely. Instead, the focus should be on what support the person needs to make that decision themselves. This is the heart of supported decision-making, which we cover in the next section.

Formal assessments of capacity are sometimes carried out by health professionals, such as neuropsychologists or occupational therapists. But these assessments should be decision-specific and time-specific. A report saying someone lacked capacity to make a financial decision in one context does not automatically mean they lack capacity to choose their support workers.

Supported decision-making: what it is and how it works

Supported decision-making means helping someone make their own decisions rather than making decisions for them. It recognises that most people, even those with significant cognitive or communication disabilities, can express preferences and make meaningful choices when they have the right support in place.

Support might look like:

Using plain language, visual aids or communication devices to explain options
Having a trusted person present during important conversations
Breaking a big decision into smaller, more manageable steps
Giving extra time before a decision needs to be made
Practising decisions in lower-stakes situations first

Families and carers often play a central role in supported decision-making. So do support coordinators, who are specifically trained to help participants understand their options and navigate the NDIS. If you work with a support coordinator, they should be actively involving the participant in every decision rather than making choices on their behalf.

You can learn more about what a support coordinator does and how to find one through the support coordinator workspace on OpenWay.

Substitute decision-making: guardians, administrators and authorised representatives

Sometimes a participant genuinely cannot make a particular decision, even with support. In those cases, a formal substitute decision-maker may be appointed by a tribunal or court. In Australia, this varies by state and territory:

In New South Wales, the NSW Civil and Administrative Tribunal (NCAT) can appoint a guardian or financial manager.
In Victoria, the Victorian Civil and Administrative Tribunal (VCAT) handles similar appointments.
Other states and territories have their own bodies and processes.

A guardian is typically appointed to make personal or lifestyle decisions (such as where someone lives or what health treatment they receive). An administrator or financial manager handles financial matters. These are significant legal roles with specific obligations.

What substitute decision-makers can and cannot do

A substitute decision-maker must act in the person's best interests and, where possible, give effect to the person's known wishes and values. They are not supposed to simply impose their own preferences. The goal is still to honour the participant's voice as much as possible.

Importantly, having a guardian or administrator does not mean the participant loses all say. A guardian might be appointed only for accommodation decisions, leaving the participant free to make all other choices independently. It is worth understanding exactly what scope any formal appointment covers.

If you are unsure whether a formal arrangement is in place for someone you support, ask the participant's family, their support coordinator, or the relevant state tribunal for clarification.

How consent and capacity show up when choosing providers

Understanding consent and capacity is not just an abstract legal exercise. It has direct, practical implications when you are looking for disability support providers in Australia.

Service agreements

Every registered NDIS provider is expected to offer a written service agreement before delivering supports. This document sets out what services will be provided, at what cost, and under what conditions. Before signing:

Read the agreement carefully, or have someone you trust read it with you.
Ask the provider to explain anything that is unclear in plain language.
Check that the agreement only covers what you have actually discussed.
Understand the cancellation policy before you commit.
Know that you can negotiate terms and are not obliged to accept the first version presented.

If a participant needs support to understand a service agreement, that support should be provided before signing, not after. A provider who rushes this process or discourages questions may not be the right fit.

Choosing and changing providers

Participants have the right to choose their own providers and to change providers if things are not working out. This is a fundamental part of the NDIS design. No provider should make you feel locked in or suggest that leaving will cause problems.

When you browse NDIS-registered providers in your area, you can compare options, read provider profiles, and make enquiries before committing to anything. Taking the time to shop around is not just sensible, it is your right.

Sharing your plan information

Participants control who sees their NDIS plan. You are not required to hand over your full plan document to every provider you speak with. You might choose to share relevant sections, or simply describe your support needs verbally. A provider should be able to give you enough information to make an informed choice without needing access to your entire plan upfront.

Protecting your rights as a participant or family member

The NDIS has a range of safeguards designed to protect participants from harm, abuse and exploitation. Registered providers must comply with the NDIS Practice Standards and Code of Conduct, which include requirements around consent, privacy and the prevention of abuse.

If you ever feel that your rights have not been respected, or that a decision was made without your genuine agreement, there are steps you can take:

Raise the concern directly with the provider in the first instance.
Contact the NDIS Quality and Safeguards Commission if you believe a registered provider has breached the Code of Conduct.
Reach out to an NDIS advocate. Advocacy services are free and independent, and can help you navigate a complaint or dispute.
Speak with your support coordinator if you have one.

OpenWay takes provider conduct seriously. You can read about what OpenWay's verification process involves and how we approach provider quality on the platform.

Practical checklist: exercising your decision-making rights

Use this checklist as a starting point whenever a significant decision comes up in your NDIS journey.

Do I understand what I am being asked to agree to?
Have I had enough time to think it over?
Do I have the support I need to make this decision (a trusted person, plain-language information, a communication aid)?
Am I making this decision freely, without pressure?
Do I know I can change my mind or withdraw consent later?
If someone else is helping me decide, are they reflecting my wishes and values, not just their own?
Do I know who to contact if something feels wrong?

Frequently asked

Can a family member make NDIS decisions on behalf of a participant without a formal legal appointment?

Not automatically. Unless a formal role has been established (such as a guardianship order, a power of attorney, or an NDIS-specific nominee arrangement), a family member does not have automatic legal authority to make decisions for an adult participant. The NDIA does have a nominee process that allows a family member or carer to be appointed as a plan nominee or correspondence nominee, but this is a specific arrangement with defined scope. If you are unsure what applies in your situation, contact the NDIA directly or speak with an advocate.

What is the difference between a plan nominee and a guardian?

A plan nominee is an NDIS-specific role, appointed by the NDIA, that allows someone to act on a participant's behalf in relation to their NDIS plan. It does not give broader legal authority over the person's life decisions. A guardian, by contrast, is appointed by a state or territory tribunal and has legal authority over specific personal decisions as defined in the guardianship order. The two roles can coexist, and it is important to understand which applies in any given situation.

Can a participant change their mind after signing a service agreement?

Yes. Consent can be withdrawn. If a participant wants to end a service agreement, they should follow the exit process set out in the agreement (which must comply with NDIS rules around notice periods). Providers cannot lock participants in indefinitely or impose unreasonable exit conditions. If you are having trouble leaving an arrangement, contact the NDIS Commission or an advocacy service for support.

How OpenWay can help

Finding a provider who genuinely respects your rights, communicates clearly and involves you in every decision starts with having good options to choose from. OpenWay is a free-to-use marketplace for NDIS participants, families and support coordinators across Australia. You can explore disability service providers by location, support type and other filters, read provider profiles, and send enquiries directly, all without handing over your plan details or committing to anything.

If you are a family member or carer supporting someone through the NDIS, the participant and family landing page has more information on how OpenWay works and what to look for when comparing providers.

Support coordinators can use OpenWay to shortlist providers, share options with participants, and keep track of enquiries in one place. Visit the support coordinator section of OpenWay to learn more about how the platform supports your work.

OpenWay is not part of the NDIS, NDIA or NDIS Commission. Final scope, pricing, travel, cancellation rules and non-face-to-face charges must be confirmed in a written service agreement between the participant (or their authorised support person) and the provider.

This article was written by OpenWay editorial with AI assistance. We review for accuracy + tone but the framing rules of the NDIS apply: nothing here is medical, legal or financial advice. Always check the NDIS Commission and your plan for the latest rules.