this is true but u need to remember that every one needs to live and to live requires = a roof, food, water, gas, electricity... and so on. so even if u are earning cash, u are required to declare "a minimum" to the ATO to convince them "yes, this person is legit". everyones "minimum expenses to survive" is different... therefore u need to pay close attention and record every dollar and cent u spend on the following: mortgage, insurance, rego, fuel and service, gas, electricity, water, phone, food, drink, entertainment (unless u dont have a life), clothes + anything u used that is linked to a bank account, interets earned on savings. i'm dreading my paper work atm......................................... gah