The Wagering Requirement (also known as playthrough or rollover) is the most vital rule in any bonus. Mechanically, it is a multiplier that determines how many times the bonus amount must be bet before it becomes withdrawable cash.
These requirements exist to ensure that bonuses are used for their intended purpose—entertainment and gameplay—rather than being claimed and immediately withdrawn. For example, if a bonus has a wagering requirement, you cannot simply withdraw the credit; you must place bets totaling the multiplier of that bonus.
It is crucial to check whether the requirement applies only to the bonus amount or to the deposit plus bonus. A "deposit + bonus" requirement is significantly harder to clear because the total amount to be wagered is much higher.
You can track your progress in real-time within your account's promotional dashboard. The exact multiplier for any specific offer is always displayed clearly alongside the offer before you accept it.