If you are working holiday visa holder, please read below.
* As a working holiday visa holder, the first $37,000 of your income is taxed at 15% and
the balance is taxed at ordinary rates. If your tax withheld amount was 15% of your gross income and
your taxable income for the year was not more than $37,000. You are required to lodge an income tax return
as you can’t get back any refund.
If you're an Australian resident for tax purposes, the first $18,200 of your yearly income isn't taxed. This is called the tax-free threshold.
In addition, the Low Income Tax Offset (LITO) is a tax offset available to all taxpayers on lower incomes. The maximum LITO for the 2018/2019 year is $445.
Therefore, if your annual gross income is not more than $20,840 and if there is no other payment from the Australian government, the maximum tax withheld will be refundable. Please be noticed that your maximum refund will be not more than the total tax withheld paid by the employee.