Juggler wrote
Also because RI and Oz have a tax agreement in place you shouldnt have to pay tax twice on the profit.. I am only assuming this but you may want to look into it.
In Indonesia, there is no separate tax on any 'profit' (assuming you mean capital gains) from a real estate transaction. The official and only tax on the seller of real property is the 2.5% payment based on the NJOP (Nilai Jual Objek Pajak - taxable value set by the government) or the actual sale price, whichever is higher. This tax was reduced from 5% a couple of years ago. In practice, most notaries base the tax payment on the NJOP value.