Adults applying for the NDIS need evidence of identity and residency, confirmation of their disability, supporting reports that explain how their condition affects daily life, and any additional information requested by the NDIS to assess eligibility.
Written by: William Huynh, Director of Brighter Futures Allied Health
Published: 12 July 2026
Disclaimer: This content is for general informational purposes only. It does not constitute clinical or funding advice, and outcomes may vary based on individual circumstances and NDIA determinations.
Before the NDIS can assess your eligibility, you’ll need to provide documents that confirm your identity, age, and residency status. These evidence of identity documents help verify that you meet the basic access requirements for the scheme.
You may be asked to provide:
Clinician’s Notes: Unlike children, who require a parent or guardian to make NDIS decisions on their behalf, participants aged 18 and over are trusted to manage their own application and plan. For when disability makes navigating paperwork or communicating with the NDIS challenging, they may choose to nominate a family member or trusted person for support.
To access the NDIS, you’ll need evidence that confirms your disability and helps establish that it is likely to be permanent. This information is typically provided by the health professionals involved in your care and treatment.
Supporting evidence may include:
A diagnosis confirmation is usually the foundation of your NDIS application. This document should clearly identify your disability and be completed by an appropriately qualified health professional who has assessed or treated you.
Depending on your condition, this may include reports or letters from specialists, psychiatrists, neurologists, rehabilitation physicians, or other relevant medical professionals. The report should clearly state the diagnosis, when it was made, and whether the condition is considered permanent or likely to be lifelong.
Medical reports provide additional clinical information about your disability and help the NDIS understand the nature of your condition. These reports may include information about:
Your treatment history demonstrates the supports, interventions, and healthcare services you have accessed over time. This may include allied health therapies, medical treatments, rehabilitation programs, medications, specialist appointments, and community or disability supports.
Providing evidence of previous and ongoing treatment helps show that reasonable treatment options have been explored and that your support needs are ongoing despite these interventions.
In addition to confirming your disability, the NDIS also needs evidence showing how your condition affects your ability to participate in everyday life. This helps determine the level of support you may require and whether you meet the NDIS access criteria.
Evidence may include:
The NDIS generally considers how a disability affects six key areas of functioning: mobility, communication, social interaction, learning, self-care, and self-management.
Reports should provide practical examples of the challenges you experience in daily life. This may include difficulties with personal care, household tasks, managing appointments, maintaining employment, travelling independently, communicating with others, or participating in community activities.
A Request for Further Information (RFI) is issued when the NDIS needs additional evidence before it can make a decision about your application. Receiving an RFI does not necessarily mean your application will be declined. In many cases, it simply means the information provided does not fully address the NDIS access requirements.
Common reasons for an RFI include:
An RFI will usually outline the specific information or documents required and provide a timeframe for responding. If you receive an RFI, it’s important to carefully review the request and seek assistance from your treating clinicians or support team where needed. Providing clear, relevant evidence that directly addresses the questions raised can help avoid unnecessary delays in the assessment process.
Clinician’s Notes: Many RFIs occur because reports describe a diagnosis without adequately explaining its impact on everyday functioning. Reports that clearly connect clinical findings to real-world challenges are often more useful in helping the NDIS assess eligibility and support needs.
The quality of your supporting evidence can have a significant impact on how efficiently the NDIS is able to assess your application. While every situation is different, there are several factors that can help strengthen the reports and documentation you submit.
Where possible, reports should be recent and accurately reflect your current circumstances. The NDIS generally prefers evidence completed within the past 12 months, particularly when describing your diagnosis, support needs, and functional capacity.
Strong reports do more than confirm a diagnosis. They explain how your disability affects your ability to complete everyday activities, participate in the community, maintain employment, manage personal care, or live independently.
Providing practical examples can help the NDIS better understand your support needs.
Where appropriate, reports should identify the outcomes you are working towards and how recommended supports may help you achieve them.
Examples may include:
Reports are often strongest when completed by clinicians who have worked with you over a reasonable period and have a good understanding of your condition, treatment history, and support needs.
This may include your speech pathologist, occupational therapist, psychologist, physiotherapist, and treating specialist or GP.
Whenever possible, reports should clearly address the information the NDIS is seeking, including evidence of permanence and functional impact. Reports that directly answer these requirements are often easier for NDIS assessors to review and may reduce the likelihood of requests for additional information.
Once your NDIS application has been approved, the next step is understanding how your funding will be managed. The NDIS offers several budget management options, each with different levels of flexibility and administrative responsibility.
If you’re unsure which approach is right for you, learning about the available options can help you make informed decisions and get the most from your plan. When you’re ready, explore our guide to NDIS fund management or speak with an experienced NDIS provider about your support options.
William Huynh is a senior speech pathologist and the director of NDIS-registered provider Brighter Futures Allied Health. He has over a decade of experience working with children and adults with complex communication needs, including disability, dysphagia, and acquired language impairments. William has completed specialist training in approaches such as Key Word Sign, LAMP Words for Life, Grid 3, and Hanen’s More Than Words. He also supervises speech pathologists and student placements, supporting evidence-based and family-centred practice.
