In simple terms, the wagering requirement means the amount of money you will have to win before the casino lets you withdraw the money. Let’s say you’ve got $100 as a bonus with a low wagering requirement of x10. This means that you would have to win as much as $1000 before you’d be able to make a withdrawal. With x40, you will have to win $4000, and with x50, you will have to win $5000 before the withdrawal.