The welcome bonus Australia casinos offer represents their first impression and strongest incentive to join their platform. When you create an account and make your initial deposit, the casino rewards you with bonus funds that boost your starting bankroll. This promotional offer typically comes as a percentage match of your deposit amount, capped at a specific dollar value. You might see a casino advertising a 100% match bonus up to $200 on your first deposit. This means if you deposit $200, the casino adds another $200 to your account, giving you $400 total to play with.