A sportsbook deposit bonus is a promotional offer provided by online betting platforms to attract new customers and reward existing ones. Typically, it matches a percentage of the initial deposit, allowing bettors to have extra funds to wager on their favorite sports. For example, a 100% deposit bonus up to $200 means that if you deposit $200, you’ll receive an additional $200 in bonus funds. These bonuses often come with specific wagering requirements, so it's essential to read the terms and conditions before claiming the offer to maximize your betting experience.