A deposit bonus is a promotional offer provided by online casinos and betting sites to incentivize new and existing players to make a deposit. Typically, it matches a percentage of the deposited amount, giving players extra funds to play with. For example, a 100% deposit bonus on a $100 deposit would grant an additional $100 in bonus funds. These bonuses often come with specific wagering requirements, meaning players must bet a certain amount before they can withdraw any winnings. Overall, deposit bonuses enhance the gaming experience by providing more opportunities to win.