The Aussie is the sixth-most-traded currency in the world, popular with forex traders due to the high interest rates in the country. While the Australian dollar is sometimes referred to as A$, to distinguish it from other dollar-denominated currencies, it usually goes under the "$" sign and the "AUD" code. In this section, the AUD is paired against the USD (United States Dollar) the official currency of the United States, and the predominantly used currency in majority of international financial transactions. Access our most up to date statistics, opinion & analyses, economic events regarding the AUD USD cross and our "Forum" tab for discussions, recent sentiments and user rankings.