The AAT has the authority to review decisions made under various Australian laws, which might relate to areas like immigration, taxation, social security, veterans’ affairs, and more. Typically, if you’ve received a decision from an Australian Government department or agency and you’re dissatisfied with it, you can check the correspondence for information about whether it can be reviewed by the AAT and how to apply.

Time frames for applying for a review at the AAT can vary depending on the type of decision being challenged. The specific time limit applicable to your circumstances should generally be stated in the written notice you received along with the decision. It's crucial to adhere to these time limits, as late applications may not be accepted unless special circumstances are demonstrated.

There might be an application fee for seeking a review of a decision at the AAT. The fee amount and payment methods are generally detailed on the AAT’s official website. In certain circumstances, you might be eligible for a fee reduction, waiver, or refund depending on your financial situation and the nature of your case. Detailed information about fee waivers and reductions is typically available on the official website or through contacting the AAT directly.

After submitting your application, the AAT usually conducts a preliminary assessment and may request additional information or documents from you. They might also notify the other party (the decision-maker) about the review and ask them to provide documents relevant to the case. The review process may involve conferences, mediation, or hearings, during which both parties can present their case. The AAT will then make a decision, which may involve affirming, varying, setting aside, or remitting the original decision.