It depends on a particular high payout casino and a banking method you choose to use. The transactions with up-to-date methods such as cryptocurrencies are instant. Usually, the fastest withdrawal online casino Australia 2021 processes the payments so that it doesn’t exceed 4 days. There are some instant withdrawal casinos that you can try out too. In most cases, they’re going to be crypto casinos because crypto wallets are considered pre-approved by most operators. There are some on my list as well if you want to check them out.