At Tax time there 2 sides to it, what you pay and what you get back so i have used this idea to create the positive and negative in the logo design. I have added a folded corner to convey the document feeling, lets face it tax is about all those receipts of paper we have put away for the year only to sort and sort back through them. I have steered away from the Australian flag as i just don't feel its needed as if its in Australia and it says Australia it must be australian! The Australia icon in Australia just makes it feel a bit noval and toursity IMO.