Miami Currency Guide
Miami uses the US Dollar.
ATMs can be found all throughout Miami, particularly in the main thoroughfares and shopping districts. If you plan on withdrawing money or using your credit card while travelling, don't forget to notify your bank before you go for security purposes and to check what international withdrawal fees may apply to your card.
Before you leave home, it is important to convert some of your Australian Dollars into US Dollars to have with you when you arrive in Miami for tips, snacks, whatever. US Dollars are available to pre-purchase from Travel Money Oz before you fly.
If you plan on shopping up a storm in Miami, consider bringing a credit card or travel money card with you instead of carrying a lot of cash. If you don't have a credit card, a prepaid Multi-currency Cash Passport™ may be an ideal option. These nifty plastic cards allow you to access your money in the form of US Dollars from ATMs and also use like a credit card wherever MasterCard® is accepted.