Cashback Casino Bonuses
Cashback casino bonuses refund a percentage of losses at the casino occured within a specified time period. The bonus only pays, if player has a net loss during this period. For example, a cashback reload bonus of 20% might be offered on certain, one day. Maximum refund is 100€ for example. So if player deposits 500€ and loses the whole amount, he will get 100€ refunded. Cashback bonuses usually do not have a wagering requirement. Cashback bonuses may have a very high positive EV, as well as unlimited reloads – unfortunately, they have a high variance too if played in aggressive way, which is the way to make them profitable if one likes to achieve +EV.
Strategy
Let´s take above 20% cashback bonus up to 100€ as an example. If you´d be able to wager on a zero house edge coin flip your whole deposit amount of 500€, you either gained or lost 500€. Half the time you will make a gain of 500€, and half the time you will lose 500€. When you lost 500€, you would have only a net loss of 400€ after the 20% up to 100€ cashback bonus. This makes the EV of the bonus (500€ - 400€)/2 = 50€. So basically cashback bonuses work like sticky bonuses.
Optimal strategy for cashback bonuses is like strategy for sticky bonuses. Begin by making large and/or high-variance bets until reaching your target. If you bust, receive the cashback bonus.
Take a note that making a single full balance bet or a few very large bets, you may be banned from future bonuses casino flagging you as an advantage player. Because of this, it is recommended to make half bankroll bets or less on blackjack or on similar game until you reach your target.
Cashback bonuses are almost always reloads and they don´t occur regularly but from time to time. Some casinos have weekly cashbacks – take a look at casino promotions sections at their home pages or promotional emails.