MyTax only asks you for information relevant to you. It also does most of the hard work for you, filling in your return with information from your previous tax return and with information provided by your bank, employer, government agencies and others.
This information is usually with us by early August, so if you wait until then to do your tax return, all you will have to do is review the information, add any missing details and then select 'lodge'.
Want to find out more??
https://www.ato.gov.au/Individuals/Lodging-your-tax-return/Lodge-online/MyTax/