Reasonable and necessary
Reasonable and necessary is the legal test the NDIA applies when deciding whether a support belongs in a participant's plan.
Reasonable and necessary is the test set out in the NDIS legislation for what a plan can include. It looks at whether a support relates to a participant’s disability, represents value for money, and is an effective way to help them pursue their goals.
The NDIS funds supports it decides are reasonable and necessary for your goals. The same item can be approved for one participant and not another, so no list or website can tell you what your plan will include.
This test applies at every planning meeting and every plan reassessment, which is why identical requests can lead to different outcomes for different participants.
Related terms
Related tools
NDIS Support Item Search
Search the current Support Catalogue: item codes, price limits, and claiming rules.
Plan Benchmark
Average plan budgets and support mix for your age group, disability group, and region - from official NDIA data.
Budget Category Finder
Where a product or support sits in the Support Catalogue.
Related articles
NDIS Funding & Budgets guide
How Does NDIS Funding Work? An Easy to Understand Guide
How NDIS funding actually works - budget types, support categories, and price limits explained without the jargon, so you can reason about your own plan.
How NDIS Assistive Technology Funding Works
How the NDIS funds assistive technology - the low, mid and high-cost bands, what evidence each needs, quotes, repairs, and buying by plan type.
Sources
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