Most casinos don’t make money on welcome bonuses. They make them on players who keep playing after spending their bonus funds. The majority of casinos still offer a bonus which gives the player a little headstart when played properly. There’s a reason why many casinos only offer their welcome bonuses to several target countries and strictly apply a one bonus per account policy.

Welcome bonuses are definitely an expense and the casino managers have to be very careful when setting the conditions of their bonuses, as well as the target markets in which they are offered.

The basic principle of casino bonuses is that you can’t withdraw a bonus if you haven’t played long enough with it. Otherwise, everyone would just simply come to the casino, take the bonus and withdraw their money with a healthy profit, without even playing.

The conditions which force you to play for long enough with a bonus before a withdrawal are known as wagering requirements (WR), or rollover requirements. WR are expressed in terms of how many times you have to roll over the bonus (25x, 50x etc.) prior to withdrawal.