When buying a house or an investment property above the duty concession limit by your State or Territory, your will have to pay stamp duty.
The amount of stamp duty payable is subject to a few varying calculations, and the total cost is influenced by which state or territory you are purchasing in, the property’s value or purchase price, and if it will be your primary place of residence or as an investment.
You can also visit every State’s websites for more info and use their Calculators.