NDIS access guide
NDIS access decisions: why the 21-day rule rarely feels like 21 days
Updated Jul 27, 2026
Written and checked by the QueueCheck editorial team. Last checked July 27, 2026. How we verify information
The National Disability Insurance Scheme Act 2013 requires the NDIA to decide an access request within 21 days. People who have been waiting three months read that and assume something has gone wrong with their case. Usually something more mundane has happened: the clock has not started, or it has been reset.
The 21 days runs from when the NDIA receives a complete access request, not from when you first made contact or first sent something in. If the agency asks for more information, further evidence, or an assessment, the request is not complete, and the countdown does not run in the way applicants expect. Understanding that single mechanic explains most of the gap between the legislated timeframe and lived experience.
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OfficialNDIS access decision: the NDIA must decide within 21 days of receiving a complete access request
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From first contact to an access decision
The 21-day requirement is set by the NDIS Act. Everything before a complete request is submitted sits outside that clock.
- 1Make contact and request access
- 2Gather and submit evidence of disability
- 3The NDIA assesses the complete request
- 4Access decision issued
- 5If refused: internal review
- 6If still refused: Administrative Review Tribunal
Make contact and request access
Day 0You contact the NDIA to make an access request, either by phone or by submitting an Access Request Form. At this point nothing is guaranteed to be running: what matters next is whether what you send is treated as complete.
Gather and submit evidence of disability
Weeks to months, and it is the usual bottleneckYou need evidence from treating professionals about your impairment, its permanence, and its functional impact. This stage is where most of the real waiting happens, because it depends on specialist appointments and report turnaround rather than on the NDIA. Sending a partial file to start the clock sooner tends to backfire, because an incomplete request does not start it.
The NDIA assesses the complete request
21 days by lawOnce the NDIA holds a complete request, the statutory 21-day period applies to making an access decision. If the agency requests further information within this window, the practical timeline extends while it waits for that material.
Access decision issued
Within the 21-day windowYou are told either that you meet the access criteria, in which case planning begins, or that you do not. A decision that you do not meet the criteria is not the end of the process; it is the trigger for review rights with defined deadlines.
If refused: internal review
Request within 3 monthsYou have 3 months from receiving the decision to ask the NDIA for an internal review. This is a mandatory first step; you cannot go straight to the tribunal.
If still refused: Administrative Review Tribunal
Apply within 28 days of the internal review decisionAfter an internal review decision you have 28 days to apply to the Administrative Review Tribunal, which may allow longer depending on circumstances. If the NDIA has not completed the internal review within 90 days of your request, the Tribunal may be able to review the decision without waiting.
What actually makes a request incomplete
The most common reason an access request stalls is evidence that does not answer the legal test. The NDIA is not asking whether you have a diagnosis; it is asking whether you have an impairment that is likely to be permanent and that substantially reduces your functional capacity in specified areas.
Reports that describe a condition in clinical terms but say little about what you can and cannot do day to day are the usual weak point. Evidence that speaks directly to functional impact, in the areas the scheme cares about, does more work than a longer stack of general medical history.
This is also why sending in a request early with whatever you have to hand tends not to help. An incomplete request does not start the 21-day clock; it starts a correspondence loop.
Permanence is a legal test, not a medical opinion about the future
Applicants often assume permanence means their condition can never change. In the scheme's framing the question is whether the impairment is likely to be permanent, including where all reasonably available treatments have been tried or considered and the impairment is expected to persist.
This distinction matters when a treating professional is reluctant to write the word permanent. What is usually needed is a clear statement of what has been tried, what the expected trajectory is, and what functional impact remains, rather than a prediction stated with false certainty.
A rejection is a stage, not a verdict
Access rejections are frequently overturned when better functional evidence is supplied, because many initial refusals turn on evidence that did not address the statutory test rather than on a judgement that the person is not disabled enough.
The deadlines are strict and worth writing down: 3 months to request an internal review from the date you receive the decision, then 28 days from the internal review decision to apply to the Administrative Review Tribunal. You cannot skip the internal review. If the NDIA takes more than 90 days over the internal review, the Tribunal may be able to step in regardless.
Free support exists for the external stage. The NDIS Appeals Program can provide an advocate to help present your case at the Tribunal, and you have the right to advocacy or legal support. Nobody should be paying a private intermediary for access to that.
When the access process stalls
It has been far longer than 21 days with no decision
What helps
Ask the NDIA directly whether your request has been recorded as complete, and if not, exactly what is outstanding. This one question resolves most apparent breaches of the 21-day rule, because the clock usually has not started.
You cannot get the specialist reports the NDIA wants
What helps
Ask precisely which functional areas the evidence must address, then take that list to your treating professionals. A GP who knows the specific functional domains required can often write a far more useful report than a specialist writing in general terms.
Your access request was refused
What helps
Note both deadlines immediately: 3 months for an internal review, then 28 days from that outcome for the Administrative Review Tribunal. Use the interval to obtain evidence that speaks to permanence and functional impact, which is what most successful reviews turn on.
The internal review itself is dragging on
What helps
If the NDIA has not completed the internal review within 90 days of your request, the Administrative Review Tribunal may be able to review the decision without waiting for the agency to finish. Ask about this rather than waiting indefinitely.
You are being charged for help with an appeal
What helps
Check the NDIS Appeals Program first, which funds advocacy support for external review, and disability advocacy organisations more generally. Paid assistance is not a requirement for exercising review rights.
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How long does an NDIS access decision take?
The NDIA must decide within 21 days of receiving a complete access request, under the NDIS Act 2013. The reason many people wait much longer is that the clock starts only once the request is complete, and requests for further information or assessments extend the practical timeline.
Why has my request taken months when the law says 21 days?
Almost always because the request has not been treated as complete, or because the NDIA has asked for further evidence. Ask the agency directly whether your request is recorded as complete and what remains outstanding, which usually explains the gap immediately.
What does permanent impairment mean for the NDIS?
It refers to an impairment likely to be permanent, including where reasonably available treatments have been tried or considered and the impairment is expected to persist. It is a legal test about likely persistence and functional impact, not a demand that a clinician promise a condition can never improve.
How do I appeal an NDIS rejection?
First request an internal review from the NDIA, within 3 months of receiving the decision. If the internal review outcome is still unfavourable, you have 28 days to apply to the Administrative Review Tribunal, which may allow longer in some circumstances. You cannot apply to the Tribunal without first seeking an internal review.
Can I get help with an appeal without paying for it?
Yes. The NDIS Appeals Program can provide an advocate to help present your case at the Administrative Review Tribunal, and you have the right to advocacy or legal support. Check this before engaging any paid service.
Does a diagnosis guarantee access?
No. The scheme's test is about impairment, likely permanence, and substantially reduced functional capacity, not about holding a particular diagnosis. Evidence describing what you can and cannot do day to day generally carries more weight than clinical history alone.