 You can send us documents online in any case that has already been lodged with the AAT. Using this service to send us documents is easy and secure. It ensures the documents are delivered directly to the correct AAT office with the information we need about the documents. If you want to apply for a review, you can use our online application form. To send us documents, click on the link on the AAT website homepage. You will need the AAT case number and the name of the person or organisation who applied for the review. This information can usually be found on any letter or other document we have sent you. We need this information so we can make sure we identify the right case. We will also ask you to give us some information about you, including your name, if you are not the applicant, as well as an email address or mobile phone number. We need this information so that we can contact you if we have any questions about the documents you are sending. When you click Submit, we will send a secure code to your email address or mobile number to complete an authentication process. Once you receive the secure code, enter it on this screen and click Submit. Once we have verified your contact details, you can upload your documents. Please ensure you read the information, including about the types of files you can send us, and answer any questions. You can upload more than one document. However, each document must be no more than 10 megabytes in size. If a single document is greater than 10 megabytes, you should split it before uploading or contact us to discuss options for sending us the document. The maximum size for all of the documents you want to send us is 50 megabytes. For each document, select the most appropriate document type from the drop-down list. Don't worry if it's not an exact match. You can provide a brief description if needed. Click on the Upload button to upload the document from your computer or device. More documents can be added by selecting the Add Another Document button. Once you have finished uploading all your documents, click the Submit button to send the documents to us. We will not receive your documents until you click Submit to complete the process. We will send you an email and reference number confirming that we have received the documents. If you do not receive this email within 30 minutes, please contact us for further assistance. You can find more information about the AAT and Sending Documents to us on the AAT website or by calling our 1800 number.