If you disagree with the outcome of your NDIS application, you can appeal the decision within three months of receiving the rejection. There are a number of agencies who are funded to assist with NDIS appeals. You can access a list of agencies local to you using the Disability Advocacy Finder.

The first step in an appeal is to request an internal review. A copy of the form you will need to fill out will be included in your rejection letter. You can also find it here.

You will need to answer a number of questions about why you believe the decision was incorrect. To ensure you make a strong case, you may wish to seek support from one of the agencies funded to help people through NDIA reviews (see 'Where to get support' below).

If your internal appeal is rejected (most are), you can request a review by the Administrative Appeals Tribunal (AAT).

The AAT exists outside of the NDIA. You have 28 days to request an AAT review after you receive notification of the NDIA’s final decision. Your first step will be to fill out a form that can be found on the AAT website or write them a letter. You can access more information here.

The AAT’s first step will be to see if an agreement can be reached between you and the NDIA. If it cannot, then the AAT will hold a hearing to determine an outcome. All relevant documents need to be submitted 14 days before the hearing. It is important not to miss that date.

If you are unhappy with the results of a AAT appeal, you can choose to go to the High Court. However, this option is only available if you believe that the AAT has made a mistake in interpreting the law.