A casino online bonus is a way for an online gambling website to attract new players and reward existing ones. They usually come in the form of extra funds or spins that can be used to play games. However, they often come with terms and conditions that must be met before they can be withdrawn. These conditions can be confusing and can make it difficult to claim a casino online bonus.

The most common type of online casino bonus is the welcome bonus. This is usually a percentage match of the first deposit amount up to a certain maximum amount. This can be in the form of free spins or a cash amount that is added to the player’s account upon making their first deposit. The amount of the bonus can vary from casino to casino, but it is not uncommon to see bonuses that offer a percentage up to 500%.

Another type of online casino bonus is the reload bonus. This is similar to the welcome bonus but is offered to existing players instead of new ones. It is also a percentage of the player’s initial deposit and is normally subject to the same wagering requirements as other casino bonuses. A reload bonus can be very helpful when you are on a losing streak as it can help to offset the losses and get you back into the game.

Some online casinos also offer loyalty bonuses for their existing customers. These may be in the form of extra free spins or a cashback offer that is added to the player’s account on a regular basis. These can be very lucrative and can give you the incentive to keep playing at that particular casino.

Finally, there are referral bonuses that are offered to players who refer friends to the casino. These typically work by providing the referrer with a unique signup link that they can use to get their friend to join the casino. Once the friend has signed up and meets any qualifying requirements, the referrer will receive their bonus.

Online casino bonuses can be very valuable and should always be considered when choosing an online gaming site. However, it is important to remember that the biggest casino online bonuses are not necessarily the best ones. Although they may look great when looked at in raw numbers, the T&Cs are often not very player friendly and can end up being more of a burden than a benefit.