How to Appeal an NDIS Decision: Internal Review and the ART
How to appeal an NDIS decision: request an internal review within 3 months, then apply to the ART. Deadlines, steps, evidence and free help explained.
What it means to appeal an NDIS decision
Which decisions can you appeal?
The deadline that matters most: three months
Step 1: How to request an internal review
Building your case: what evidence helps
What happens after you request an internal review
Step 2: Applying to the ART
The appeal process at a glance
Free help: advocates, appeals support and legal aid
Common pitfalls to avoid
How the 2026-2030 reforms affect appeals
What to do next
Frequently asked questions
How long do I have to appeal an NDIS decision?
You generally have three months from the day you receive the decision to ask the NDIA for an internal review. If you are still unhappy after that review, you usually have a shorter window — commonly around 28 days — to apply to the Administrative Review Tribunal, so check your decision letter for the exact date. Lodge on time even if your evidence is not fully ready.
Do I need a lawyer to appeal?
No. You can request an internal review yourself by phone, email or the NDIS website, at no cost. Free disability advocates through the NDIS Appeals program can help you at both stages, and legal support is available for ART matters if you need it. Many people appeal successfully with an advocate rather than a private lawyer.
What is the difference between an internal review and the ART?
An internal review is done by the NDIA itself — a different staff member takes a fresh look at the decision. The Administrative Review Tribunal (ART) is completely independent of the NDIA and can make its own decision. You have to complete the internal review first before you can go to the ART.
Will appealing put my current funding at risk?
Appealing a decision is your right and asking for a review does not remove supports you already have in your current plan. An internal review looks at the specific decision you have challenged. If you are worried about how a review might affect your plan, speak to a disability advocate or the NDIA before you lodge, and keep records of everything.
What evidence should I include?
Focus on recent reports from your treating professionals that describe your functional needs and clearly link the support you want to your disability and daily life. Evidence that a support has worked before, or what happens without it, also helps. General letters are less persuasive than reports written specifically about the point in dispute.