Financials & HealthBanking There are four major banks within Australia, with the Commonwealth Bank of Australia being the largest. You will be required to open up a banking account to store money & receive money from working in Australia. Tax File Number A Tax File Number is required if you intend to gain income from employment, or earn money from investments or receive government payments in Australia. You should apply for a Tax File Number from the Australian Taxation Office as quickly as possible after arrival. Medicare Medicare Australia is our national public health scheme. There is no charge to join Medicare, which helps you to pay for essential medical services and public hospital care. Only people who hold a permanent visa are eligible for medicare.