A betting site deposit bonus is an enticing promotion offered by online sportsbooks and casinos to attract new players and retain existing ones. Typically, this bonus matches a percentage of the player's initial deposit, providing extra funds to wager with. 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. Overall, deposit bonuses enhance the betting experience by giving players more opportunities to win.