A cashback bonus is a type of online casino incentive that rewards gamblers for their loyalty by refunding a percentage of the money lost while playing. This bonus can be either a fixed amount or a percentage of the total losses. The percentage or amount rewarded can vary from casino to casino, and depends on the online casino's promotional policy. Generally, a cashback bonus will be credited to a player's account within a certain time frame, and the funds can then be used to play more games or withdrawn as real cash.