Every casino cashier has two floors. One tells you the smallest amount you may put in; the other tells you the smallest amount you may take out. They are set independently, they are often quite different, and the gap between them catches a lot of casual players. This explainer is for adults of legal gambling age in Australia who want to understand both numbers before the first transaction.
The deposit floor
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Minimum deposits are usually modest, somewhere around A$10 to A$20, because operators want the barrier low. Some payment methods carry their own higher floor; a bank transfer may require more than a card. Promotions can quietly raise the figure as well: a welcome bonus may need a deposit of A$30 even though the cashier would accept A$10 without it. The lower of the two numbers is what you can deposit; the higher is what you need for the offer.
The withdrawal floor
Withdrawal minimums are typically higher, and this is where frustration starts. A player who deposits A$15, wins a little and tries to cash out A$22 may hit a A$50 minimum and be told to keep playing or keep waiting. The floor exists because each payout carries processing cost, and operators would rather batch them. Resource pages like RollXO Casino list both figures side by side for the sites they cover, which is a quicker check than hunting through a terms page.
Why the gap matters for small bankrolls
If your plan is to play with A$20 a week, a A$50 withdrawal minimum means you can only cash out after a good run that more than doubles your stake. Anything smaller stays in the account by design. Knowing this in advance changes the plan: either accept that small balances are effectively locked, or choose a site whose floors match your budget.
Method differences
Crypto and e-wallets often carry lower withdrawal floors than bank transfers. Cards sit somewhere in between. The same casino can therefore have three different minimums depending on how you ask for the money, so check the method you actually intend to use rather than the headline figure.
A quick rule
Before depositing, read the withdrawal minimum first. If it is more than twice what you plan to deposit, think about whether that site fits the way you play.