You can follow these steps to access and download your ITR from the Australian Taxaxtion Office via myGov:

Using your mobile phone

‍Using your desktop computer or laptop

Mobile

1. Sign in to myGov: Go to my.gov.au and sign in.
2. Go to ATO: From your myGov home screen, select Australian Taxation Office.
3. Tap the Menu (☰) > Tax > Lodgements > Income tax
4. Select the History tab.
5. Find the relevant financial year and tap View Details.
6. On the new page, scroll all the way to the bottom.
7. Tap the button that says Print-friendly version.
   
   1. If you’re on an iPhone
      1. Tap the ‘Print’ link on the top right of the ITR
      2. If you get a warning saying ‘This website has been blocked from automatically printing’ select ‘Allow’
      3. Click the Icon next to print, and select ‘Save to files’ from the menu options
   2. If you’re on an android phone
      1. Tap the ‘Print’ link on the top right of the ITR
      2. Tap the download to PDF and save to select folder

Desktop

1. Sign in to myGov: Go to my.gov.au and sign in.
2. Go to ATO: From your myGov home screen, select Australian Taxation Office.
3. Top Menu: Click the Tax option on the op menu.
4. Navigate to Income Tax: In the menu, click through the following:
   • Tax > Lodgements > Income tax
5. View History: Select the History tab to see your past tax returns.
6. Find the relevant financial year and click View Details.
7. On the new page, scroll all the way to the bottom.
8. Click the button that says Print-friendly version.
9. On the new page, click the ‘Print’ link on the top right, and select destination as PDF.