A betting bonus deposit is an incentive offered by online sportsbooks and casinos to attract new players and retain existing ones. Typically, it involves matching a percentage of the player's initial deposit, allowing them to wager with extra funds. For example, a 100% bonus on a $100 deposit gives the player an additional $100 to play with. These bonuses often come with specific terms and conditions, such as wagering requirements, which dictate how many times the bonus must be played through before withdrawal. Understanding these details is crucial for maximizing the benefits of the bonus.