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How to Appeal an NDIS Decision: Step-by-Step Guide

Learn how to appeal an NDIS decision with our comprehensive step-by-step guide. Understand the process, required documents, and tips for a successful appeal.

How to Appeal an NDIS Decision: A Step-by-Step Guide

How to Appeal an NDIS Decision: A Step-by-Step Guide

The National Disability Insurance Scheme (NDIS) is designed to provide support to Australians with disabilities. However, there may be times when you disagree with a decision made by the NDIS. If you find yourself in this situation, it’s important to know that you have the right to appeal. This step-by-step guide will walk you through the process of appealing an NDIS decision.

Step 1: Understand the Decision

Before you begin the appeal process, it’s crucial to fully understand the decision that has been made. Review the decision letter carefully and take note of the reasons provided. If anything is unclear, you can contact the NDIS for further clarification.

Step 2: Request an Internal Review

The first step in the appeal process is to request an internal review of the decision. You must do this within three months of receiving the decision. To request an internal review, you can:

  • Complete the “Review of a Decision” form available on the NDIS website.
  • Write a letter outlining why you disagree with the decision and what outcome you are seeking.
  • Contact the NDIS by phone and request a review.

Make sure to provide as much detail as possible and include any supporting evidence that may help your case.

Step 3: Await the Outcome of the Internal Review

Once you have submitted your request for an internal review, the NDIS will assign a different staff member to review the decision. This process can take up to 90 days. During this time, you may be contacted for additional information or clarification.

Step 4: External Review by the Administrative Appeals Tribunal (AAT)

If you are not satisfied with the outcome of the internal review, you can request an external review by the Administrative Appeals Tribunal (AAT). You must do this within 28 days of receiving the internal review decision. To apply for an AAT review, you can:

  • Complete the application form available on the AAT website.
  • Write a letter to the AAT outlining your case.
  • Contact the AAT by phone for assistance with your application.

The AAT will review the decision independently and may hold a hearing to gather more information. You can represent yourself or have someone represent you, such as a lawyer or advocate.

Step 5: Prepare for the AAT Hearing

If a hearing is scheduled, it’s important to prepare thoroughly. Gather all relevant documents, evidence, and any additional information that supports your case. You may also want to practice presenting your case and consider any questions that may be asked during the hearing.

Step 6: Attend the AAT Hearing

During the hearing, you will have the opportunity to present your case and answer any questions from the tribunal members. Be clear, concise, and honest in your responses. After the hearing, the AAT will make a decision, which will be provided to you in writing.

Step 7: Review the AAT Decision

Once you receive the AAT’s decision, review it carefully. If the decision is in your favor, the NDIS will implement the changes. If the decision is not in your favor, you may have further options for appeal, such as seeking a review by the Federal Court, but this is a more complex process and may require legal advice.


Appealing an NDIS decision can be a challenging process, but understanding the steps involved can help you navigate it more effectively. Remember to seek support from advocates, legal advisors, or support organizations if needed. Your persistence and preparation can make a significant difference in achieving a favorable outcome.

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