Traveling to Australia is an exciting experience, but it's important for US citizens to understand the visa requirements before they go. All non-Australian citizens must have a valid U. S. passport and an approved visa or Electronic Travel Authority (ETA) to enter the country.
The most common option for travelers is the Visitor Visa (Subclass 600), which allows them to stay in Australia for up to three months, or up to twelve months under certain circumstances. There is also the Travel Authority e-Visa (Subclass 60), which allows travelers to stay in the country for up to three months each visit, with a total of one year allowed in the country. If you are traveling for medical treatment or work, you will need other travel documents to enter Australia. Electronic Travel Authority (or ETA) is the name given to the most commonly used Australian tourist and business visa, which allows you to stay in Australia for up to 3 months each time you enter Australia, within 12 months from the date the visa was granted.
This is a multiple-entry visa; once you obtain the visa for the U. S., you'll be able to travel to Australia multiple times in a year after it's broadcast. If you want to travel to Australia for a short-term visit and study, you may be eligible for a visitor visa. As a U. visitor, Australia requires a travel visa if you plan to visit the country for tourism or business purposes, and ETA is the most commonly used form of such authorization. If you are already in Australia and hold a valid Electronic Travel Authority visa (subclass 60), you can extend your stay by applying for another visa, such as a visitor visa (subclass 600).
Make sure you clearly understand what you'll need to do the next time you travel to Australia.