Stamp duty is charged on nearly all property transactions in Australia. It is state dependent. Our stamp duty calculator will help estimate the stamp duty for ACT, NSW, NT, QLD, SA, TAS, VIC and WA. It also factors whether you are eligible for any first home buyers grant or concession as well as any additional charges you may have to pay if you are a foreign purchaser or buying an investment property, buying vacant land or building a new home.