How to Prepare the Best NDIS R&N Evidence? Every dollar, every support worker hour, and every piece of equipment funded by your NDIS plan must pass one crucial test: Is it ‘Reasonable & Necessary’?
Furthermore, this phrase is more than just jargon; NDIS R&N is the legal foundation upon which the entire scheme operates. Consequently, understanding this concept is not just helpful, NDIS R&N is the key to securing the maximum amount of funding and the right supports to pursue your goals. Therefore, if a support does not meet all six of the NDIS’s criteria, it simply cannot be funded.
In this guide, we will break down the six pillars of the NDIS R&N test and show you exactly what evidence you need to provide to become your own best advocate.

The NDIS R&N Six Pillars
How the NDIA Makes the Decision
The NDIS will only fund a support if it is satisfied that it meets every one of the following criteria:
1. Relates to Your Disability & Goals
- The Rule: The support must have a direct link to your disability support needs and help you achieve the goals listed in your plan.
- The Reality: The NDIS won’t fund general life expenses (like groceries, rent, or a holiday flight) because those are things that everyone, with or without a disability, needs. Therefore, you must demonstrate how the support addresses a barrier caused by your disability. The NDIS R&N rules require this foundational link.
2. Facilitates Social and Economic Participation
- The Rule: The support must help you undertake activities that increase your independence and participation in the community, work, or study.
- The Reality: This criterion underpins the Capacity Building budget. For example, funding speech therapy (Capacity Building) helps you communicate, which in turn, facilitates your social participation. The NDIS R&N participation test ensures funding supports genuine engagement. For a deep dive into supports that build skills, read Understanding NDIS Capacity Building Supports.
3. Represents Value for Money
- The Rule: The cost of the support must be reasonable when compared to the benefits you receive and the cost of alternative supports.
- The Reality: However, ‘Value for Money’ does not mean the NDIS funds the cheapest option. Instead, the NDIA considers if a more expensive support (like a high-quality mobility aid) will reduce your need for more expensive support in the long term (like ongoing support worker time). The NDIS R&N Value for Money test, consequently, requires justification of the cost with clear quotes and evidence. To master your spending, check out NDIS Budgeting: How to Avoid Overspending and Underspending and NDIS Pricing Arrangements: A Guide for Participants.
4. Is Effective and Beneficial (Good Practice)
- The Rule: The support must be effective and beneficial for you, having regard to current good practice (based on evidence and research).
- The Reality: This is why strong reports from Allied Health professionals (OTs, Physios, Psychologists) are essential. In summary, the NDIS R&N test demands proof, based on established medical or therapeutic evidence, that the support works. Furthermore, for invoicing specifics, see NDIS Therapy Invoicing: What NDIS Participants Need to Know.
5. Takes Account of Informal Supports
- The Rule: The funding or provision of the support must take into account what is reasonable to expect from your informal supports (family, friends, community).
- The Reality: Parents are expected to provide substantial care for their children. Consequently, the NDIS steps in only when the level of support needed is substantially greater than what would be considered typical for a peer without a disability. A detailed carer statement, therefore, is vital here. This check is a core NDIS R&N principle.
6. Is the NDIS the Most Appropriate Funder?
- The Rule: The support must be most appropriately funded by the NDIS and not by a mainstream system (like Health, Education, or Housing).
- The Reality: Thus, the NDIS generally won’t fund items covered by Medicare or your private health insurance. Moreover, there must be a clear line distinguishing the disability-related need from a general health need. Passing this final NDIS R&N gateway is non-negotiable.

How to Advocate: Three Key Strategies
Now that you know the six rules, you can apply them to your requests. The six rules are the foundation of NDIS R&N advocacy. Advocacy isn’t just asking for more; it’s providing the right evidence to prove the support meets all six pillars.
| Strategy | Action | NDIS R&N Pillar it Addresses |
| Link Everything to Goals | Ensure every quote and report explicitly references a specific goal from your NDIS plan (e.g., “This therapy will achieve Goal 2 by…”). | Relates to Disability & Goals |
| Provide Quotes & Alternatives | Submit at least two quotes for high-cost items and explain why the chosen option is the best long-term value (not just the cheapest). | Value for Money |
| Get Professional Reports | Always back requests for Capacity Building (therapy) and Capital (AT) with a recent, goal-focused report from a relevant Allied Health professional. | Effective and Beneficial |

Why Permalink is Your NDIS R&N Partner
In conclusion, mastering the NDIS R&N criteria empowers you to take control of your journey. However, collecting the right evidence and framing requests in legal NDIA language can be stressful.
Permalink provides the expert Support Coordination needed to audit your past supports and gather the robust evidence (reports, quotes, carer statements) that directly addresses all six NDIS R&N pillars. Therefore, choosing Permalink means securing a partner dedicated to maximising every dollar in your plan and reducing the stress of rejected invoices. For comprehensive help with evidence and advocacy, check out Service Agreement: How to Prepare and Stay in Control. We ensure your plan is fully compliant with NDIS R&N requirements.
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📅 Coming Next Week:
In our next blog, we’ll cut through the confusion around Standard vs. High Intensity Supports. We’ll show you if your complex care qualifies for higher funding and how to ensure your support workers have the right training.