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Understanding what’s reasonable and necessary

Updated 13 October, 2020
NDIS participant, Quoc and Plan Partners employee, Gretchen, discussing his NDIS plan.

Once you start getting into the details of the NDIS, you will come across the term "reasonable and necessary" fairly often. It is the foundation of how the NDIS determines what kind of support will be funded and included in your NDIS plan.

But what does the term really mean, and how do you determine whether your supports are ‘reasonable and necessary’?

The framework of reasonable and necessary might sound vague, but it’s actually pretty straightforward. In fact, if you examine the criteria and understand how it’s applied by the NDIS, you might even be able to use it to your advantage and get the funding you need to achieve your goals.

In this blog post, we break down what reasonable and necessary means and give some top tips of our own.

What is reasonable and what is necessary?       

The NDIS was created to give people with disability more choice and control over how they use their funding. But how does the NDIS decide what exactly it should fund?  

The answer: reasonable and necessary. 

Before the NDIS will fund a support in your plan, it must meet the criteria of being both reasonable and necessary. While these terms are open to interpretation and assessed on a case by case basis, there are very specific criteria around what does – or doesn’t – meet the standard.

How are supports assessed?

In short, for something to be reasonable and necessary, it must be directly related to your disability and represent value for money. Section 34 of the NDIS Act breaks this down further, establishing 6 specific criteria that we’ll take a closer look at now.

For a support to be reasonable and necessary, it must:

  1. Help you achieve the goals and aspirations you identified in your NDIS Plan 
  2. Get you more connected to your community; either socially or economically
  3. Represent tangible value for money; particularly if it’s priced above the NDIS price guide
  4. Use established, science-based methods and be likely to provide a real benefit
  5. Not serve as a stand-in for what should reasonably be provided by other parties, such as family members, carers or the community
  6. Not fund a support that could be funded by another, more appropriate method, such as another Government body.

If a support meets all these six criteria, it’s deemed to be reasonable and necessary and should be approved for funding under the NDIS. While there’s no black and white guide to what will and won’t be funded, that flexibility can work in your favour, as you can use these six criteria to help justify the funding of a support for your specific situation.

Top tips

Now we’ve outlined exactly how the NDIS assesses whether a support is reasonable and necessary, here are some of our team’s top tips that you can use to help get the most out of your NDIS funding.

  1. Keep the criteria in mind – When asking for a support, remember to always tie it back to the reasonable and necessary criteria. Ask yourself, how is this going to help me achieve my goals and how is it related to my disability? This helps differentiate it from day-to-day expenses which aren’t funded.   
  2. Be prepared – When going to a planning meeting, take any documentation with you that will help you argue your case. Use our handy checklist which you can find on our 'Resources' page. If you’re worried a support might not obviously pass the reasonable and necessary criteria, you can get your service provider to write a recommendation ahead of your meeting stating why he/she thinks that the support is reasonable and necessary. Having all your supporting documentation with you in the planning meeting will help get supports written into your plan.
  3. Appealing a decision – If the NDIS deems a support to have not met the reasonable and necessary criteria, you can appeal the decision. Make sure you build a case around why you believe the support should be funded, and gather any supporting documentation to argue your position. This handy blog explains how to ask for a review.
  4. Request to include Plan Management and/or Support Coordination in your plan - If you have either Plan Management (support with managing your NDIS funds) or Support Coordination (support with finding and connecting you with the right supports) in your plan, you can ask your Plan Manager or Support Coordinator for advice on what the NDIS does fund and what not, any time. At Plan Partners, we offer both services and our team are experts on everything NDIS. Find out more here.
  5. Speak to an expert – If you’re still unsure about what you can or can’t get funded under the NDIS or need some more assistance understanding the framework of reasonable and necessary. We're here to help, give us a call on 1300 333 700 or chat with us.


Plan Partners logo
Mr geel (not verified)   04th November, 2019

from school everyday for six weeks starting from Next Wednesday (6th Nov). Their school is in South Morang and Reservior.
Can you give me the quote

Plan Partners logo
pmp.admin   04th November, 2019

Hi Mr Geel,

Thank you for reaching out. Please contact our friendly team on 1300 333 700 so that we can assess your personal situation and provide you with accurate information, tips and advice. We are looking forward to your call.

Warm regards,
The Plan Partners team

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