It's not a stimulus package, but a tax offset... depending on your income you could receive between $530 - $1080 offset
From the 2018–19 income year:
Increase the low and middle income tax offset from a maximum amount of $530 to $1,080 per annum and increase the base amount from $200 to $255 per annum
Taxpayers with a taxable income which does not exceed $37,000 will receive a low and middle income tax offset of up to $255
Taxpayers with a taxable income which exceeds $37,000 but is not more than $48,000 will receive $255, plus an amount equal to 7.5 per cent to the maximum offset of $1,080
Taxpayers with a taxable income which exceeds $48,000 but is not more than $90,000 will be eligible for the maximum low and middle income tax offset of $1,080
Taxpayers with a taxable income which exceeds $90,000 but is not more than $126,000 will be eligible for a low and middle income tax offset of $1,080, less an amount equal to 3 per cent of the excess.
see this calculator to see how much you may get back.
