In online casinos, blackjack bonuses are promotional offers designed to give players extra funds or incentives to play. These can include welcome bonuses for new players, no-deposit bonuses to try games without funding an account, and reload bonuses for existing players. Some casinos also offer cashback on losses as part of loyalty programs. However, these bonuses typically come with wagering requirements, meaning players must bet a certain amount before they can withdraw any bonus-related winnings. Additionally, some games may contribute less toward meeting these requirements, and specific blackjack variants may be excluded from the bonuses. Always check the terms and conditions to understand the full details.